Polymers synthesized by living organisms. They play a role in the formation of macromolecular structures and are synthesized via the covalent linkage of biological molecules, especially AMINO ACIDS; NUCLEOTIDES; and CARBOHYDRATES.
A plant genus of the family ARALIACEAE. Ciwujia extract, which is prepared from plants of this genus, contains ciwujianosides and is used to enhance PHYSICAL ENDURANCE.
Chemical and physical transformation of the biogenic elements from their nucleosynthesis in stars to their incorporation and subsequent modification in planetary bodies and terrestrial biochemistry. It includes the mechanism of incorporation of biogenic elements into complex molecules and molecular systems, leading up to the origin of life.
The origin of life. It includes studies of the potential basis for life in organic compounds but excludes studies of the development of altered forms of life through mutation and natural selection, which is BIOLOGICAL EVOLUTION.
Compounds formed by the joining of smaller, usually repeating, units linked by covalent bonds. These compounds often form large macromolecules (e.g., BIOPOLYMERS; PLASTICS).
Fatty acid biopolymers that are biosynthesized by microbial polyhydroxyalkanoate synthase enzymes. They are being investigated for use as biodegradable polyesters.
Deacetylated CHITIN, a linear polysaccharide of deacetylated beta-1,4-D-glucosamine. It is used in HYDROGEL and to treat WOUNDS.
The resistance that a gaseous or liquid system offers to flow when it is subjected to shear stress. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Synthetic or natural materials, other than DRUGS, that are used to replace or repair any body TISSUES or bodily function.
Colloids with a solid continuous phase and liquid as the dispersed phase; gels may be unstable when, due to temperature or other cause, the solid phase liquefies; the resulting colloid is called a sol.
The development and use of techniques to study physical phenomena and construct structures in the nanoscale size range or smaller.
The homogeneous mixtures formed by the mixing of a solid, liquid, or gaseous substance (solute) with a liquid (the solvent), from which the dissolved substances can be recovered by physical processes. (From Grant & Hackh's Chemical Dictionary, 5th ed)
Body of knowledge related to the use of organisms, cells or cell-derived constituents for the purpose of developing products which are technically, scientifically and clinically useful. Alteration of biologic function at the molecular level (i.e., GENETIC ENGINEERING) is a central focus; laboratory methods used include TRANSFECTION and CLONING technologies, sequence and structure analysis algorithms, computer databases, and gene and protein structure function analysis and prediction.
Theoretical representations that simulate the behavior or activity of chemical processes or phenomena; includes the use of mathematical equations, computers, and other electronic equipment.
Water swollen, rigid, 3-dimensional network of cross-linked, hydrophilic macromolecules, 20-95% water. They are used in paints, printing inks, foodstuffs, pharmaceuticals, and cosmetics. (Grant & Hackh's Chemical Dictionary, 5th ed)
The characteristic three-dimensional shape of a molecule.
Resistance and recovery from distortion of shape.
Models used experimentally or theoretically to study molecular shape, electronic properties, or interactions; includes analogous molecules, computer-generated graphics, and mechanical structures.
A deoxyribonucleotide polymer that is the primary genetic material of all cells. Eukaryotic and prokaryotic organisms normally contain DNA in a double-stranded state, yet several important biological processes transiently involve single-stranded regions. DNA, which consists of a polysugar-phosphate backbone possessing projections of purines (adenine and guanine) and pyrimidines (thymine and cytosine), forms a double helix that is held together by hydrogen bonds between these purines and pyrimidines (adenine to thymine and guanine to cytosine).
The study of the deformation and flow of matter, usually liquids or fluids, and of the plastic flow of solids. The concept covers consistency, dilatancy, liquefaction, resistance to flow, shearing, thixotrophy, and VISCOSITY.
Linear POLYPEPTIDES that are synthesized on RIBOSOMES and may be further modified, crosslinked, cleaved, or assembled into complex proteins with several subunits. The specific sequence of AMINO ACIDS determines the shape the polypeptide will take, during PROTEIN FOLDING, and the function of the protein.
The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds.
The spatial arrangement of the atoms of a nucleic acid or polynucleotide that results in its characteristic 3-dimensional shape.
The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms.
The thermodynamic interaction between a substance and WATER.
Members of the class of compounds composed of AMINO ACIDS joined together by peptide bonds between adjacent amino acids into linear, branched or cyclical structures. OLIGOPEPTIDES are composed of approximately 2-12 amino acids. Polypeptides are composed of approximately 13 or more amino acids. PROTEINS are linear polypeptides that are normally synthesized on RIBOSOMES.
A type of scanning probe microscopy in which a probe systematically rides across the surface of a sample being scanned in a raster pattern. The vertical position is recorded as a spring attached to the probe rises and falls in response to peaks and valleys on the surface. These deflections produce a topographic map of the sample.
A spectroscopic technique in which a range of wavelengths is presented simultaneously with an interferometer and the spectrum is mathematically derived from the pattern thus obtained.
A rigorously mathematical analysis of energy relationships (heat, work, temperature, and equilibrium). It describes systems whose states are determined by thermal parameters, such as temperature, in addition to mechanical and electromagnetic parameters. (From Hawley's Condensed Chemical Dictionary, 12th ed)
Generating tissue in vitro for clinical applications, such as replacing wounded tissues or impaired organs. The use of TISSUE SCAFFOLDING enables the generation of complex multi-layered tissues and tissue structures.
Spectroscopic method of measuring the magnetic moment of elementary particles such as atomic nuclei, protons or electrons. It is employed in clinical applications such as NMR Tomography (MAGNETIC RESONANCE IMAGING).
The ability of a substance to be dissolved, i.e. to form a solution with another substance. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Computer-based representation of physical systems and phenomena such as chemical processes.
The rate dynamics in chemical or physical systems.
The characteristic 3-dimensional shape of a protein, including the secondary, supersecondary (motifs), tertiary (domains) and quaternary structure of the peptide chain. PROTEIN STRUCTURE, QUATERNARY describes the conformation assumed by multimeric proteins (aggregates of more than one polypeptide chain).
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
A purely physical condition which exists within any material because of strain or deformation by external forces or by non-uniform thermal expansion; expressed quantitatively in units of force per unit area.
One of the three domains of life (the others being Eukarya and ARCHAEA), also called Eubacteria. They are unicellular prokaryotic microorganisms which generally possess rigid cell walls, multiply by cell division, and exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal. Bacteria can be classified by their response to OXYGEN: aerobic, anaerobic, or facultatively anaerobic; by the mode by which they obtain their energy: chemotrophy (via chemical reaction) or PHOTOTROPHY (via light reaction); for chemotrophs by their source of chemical energy: CHEMOLITHOTROPHY (from inorganic compounds) or chemoorganotrophy (from organic compounds); and by their source for CARBON; NITROGEN; etc.; HETEROTROPHY (from organic sources) or AUTOTROPHY (from CARBON DIOXIDE). They can also be classified by whether or not they stain (based on the structure of their CELL WALLS) with CRYSTAL VIOLET dye: gram-negative or gram-positive.
A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
The properties, processes, and behavior of biological systems under the action of mechanical forces.
The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH = log 1/2[1/(H+)], where (H+) is the hydrogen ion concentration in gram equivalents per liter of solution. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
A polynucleotide consisting essentially of chains with a repeating backbone of phosphate and ribose units to which nitrogenous bases are attached. RNA is unique among biological macromolecules in that it can encode genetic information, serve as an abundant structural component of cells, and also possesses catalytic activity. (Rieger et al., Glossary of Genetics: Classical and Molecular, 5th ed)
A procedure consisting of a sequence of algebraic formulas and/or logical steps to calculate or determine a given task.
The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION.
Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)
Naturally occurring complex liquid hydrocarbons which, after distillation, yield combustible fuels, petrochemicals, and lubricants.
NATIONAL LIBRARY OF MEDICINE service for health professionals and consumers. It links extensive information from the National Institutes of Health and other reviewed sources of information on specific diseases and conditions.
A nonmetallic element with atomic symbol C, atomic number 6, and atomic weight [12.0096; 12.0116]. It may occur as several different allotropes including DIAMOND; CHARCOAL; and GRAPHITE; and as SOOT from incompletely burned fuel.
The aggregate enterprise of manufacturing and technically producing chemicals. (From Random House Unabridged Dictionary, 2d ed)
Hydrocarbon-rich byproducts from the non-fossilized BIOMASS that are combusted to generate energy as opposed to fossilized hydrocarbon deposits (FOSSIL FUELS).

Oligomerization and scaffolding functions of the erythropoietin receptor cytoplasmic tail. (1/1933)

Signal transduction by the erythropoietin receptor (EPOR) is activated by ligand-mediated receptor homodimerization. However, the relationship between extracellular and intracellular domain oligomerization remains poorly understood. To assess the requirements for dimerization of receptor cytoplasmic sequences for signaling, we overexpressed mutant EPORs in combination with wild-type (WT) EPOR to drive formation of heterodimeric (i.e. WT-mutant) receptor complexes. Dimerization of the membrane-proximal portion of the EPOR cytoplasmic region was found to be critical for the initiation of mitogenic signaling. However, dimerization of the entire EPOR cytoplasmic region was not required. To examine this process more closely, we generated chimeras between the intracellular and transmembrane portions of the EPOR and the extracellular domains of the interleukin-2 receptor beta and gammac chains. These chimeras allowed us to assess more precisely the signaling role of each receptor chain because only heterodimers of WT and mutant receptor chimeras form in the presence of interleukin-2. Coexpression studies demonstrated that a functional receptor complex requires the membrane-proximal region of each receptor subunit in the oligomer to permit activation of JAK2 but only one membrane-distal tail to activate STAT5 and to support cell proliferation. Thus, this study defines key relationships involved in the assembly and activation of the EPOR signal transduction complex which may be applicable to other homodimeric cytokine receptors.  (+info)

Mapping the functional domains of BRCA1. Interaction of the ring finger domains of BRCA1 and BARD1. (2/1933)

Breast cancer 1 (BRCA1) and BRCA1-associated RING domain 1 (BARD1) are multidomain proteins that interact in vivo via their N-terminal RING finger motif regions. To characterize functional aspects of the BRCA1/BARD1 interaction, we have defined the structural domains required for the interaction, as well as their oligomerization state, relative stability, and possible nucleic acid binding activity. We have found that the RING finger motifs do not themselves constitute stable structural domains but are instead part of larger domains comprising residues 1-109 of BRCA1 and residues 26-119 of BARD1. These domains exist as homodimers and preferentially form a stable heterodimer. Shorter BRCA1 RING finger constructs do not interact with BARD1 or with longer BRCA1 constructs, indicating that the heterodimeric and homodimer interactions are mediated by regions outside the canonical RING finger motif. Nucleic acid binding is a generally proposed function of RING finger domains. We show that neither the homodimers nor the heterodimer displays affinity for nucleic acids, indicating that the proposed roles of BRCA1 and BARD1 in DNA repair and/or transcriptional activation must be mediated either by other regions of the proteins or by additional cofactors.  (+info)

Recombinant human peroxisomal targeting signal receptor PEX5. Structural basis for interaction of PEX5 with PEX14. (3/1933)

Import of matrix proteins into peroxisomes requires two targeting signal-specific import receptors, Pex5p and Pex7p, and their binding partners at the peroxisomal membrane, Pex13p and Pex14p. Several constructs of human PEX5 have been overexpressed and purified by affinity chromatography in order to determine functionally important interactions and provide initial structural information. Sizing chromatography and electron microscopy suggest that the two isoforms of the human PTS1 receptor, PEX5L and PEX5S, form homotetramers. Surface plasmon resonance analysis indicates that PEX5 binds to the N-terminal fragment of PEX14-(1-78) with a very high affinity in the low nanomolar range. Stable complexes between recombinant PEX14-(1-78) and both the full-length and truncated versions of PEX5 were formed in vitro. Analysis of these complexes revealed that PEX5 possesses multiple binding sites for PEX14, which appear to be distributed throughout its N-terminal half. Coincidentally, this part of the molecule is also responsible for oligomerization, whereas the C-terminal half with its seven tetratricopeptide repeats has been reported to bind PTS1-proteins. A pentapeptide motif that is reiterated seven times in PEX5 is proposed as a determinant for the interaction with PEX14.  (+info)

Transforming growth factor-beta induces formation of a dithiothreitol-resistant type I/Type II receptor complex in live cells. (4/1933)

Transforming growth factor-beta (TGF-beta) binds to and signals via two serine-threonine kinase receptors, the type I (TbetaRI) and type II (TbetaRII) receptors. We have used different and complementary techniques to study the physical nature and ligand dependence of the complex formed by TbetaRI and TbetaRII. Velocity centrifugation of endogenous receptors suggests that ligand-bound TbetaRI and TbetaRII form a heteromeric complex that is most likely a heterotetramer. Antibody-mediated immunofluorescence co-patching of epitope-tagged receptors provides the first evidence in live cells that TbetaRI. TbetaRII complex formation occurs at a low but measurable degree in the absence of ligand, increasing significantly after TGF-beta binding. In addition, we demonstrate that pretreatment of cells with dithiothreitol, which inhibits the binding of TGF-beta to TbetaRI, does not prevent formation of the TbetaRI.TbetaRII complex, but increases its sensitivity to detergent and prevents TGF-beta-activated TbetaRI from phosphorylating Smad3 in vitro. This indicates that either a specific conformation of the TbetaRI. TbetaRII complex, disrupted by dithiothreitol, or direct binding of TGF-beta to TbetaRI is required for signaling.  (+info)

A novel PDZ domain containing guanine nucleotide exchange factor links heterotrimeric G proteins to Rho. (5/1933)

Small GTP-binding proteins of the Rho family play a critical role in signal transduction. However, there is still very limited information on how they are activated by cell surface receptors. Here, we used a consensus sequence for Dbl domains of Rho guanine nucleotide exchange factors (GEFs) to search DNA data bases, and identified a novel human GEF for Rho-related GTPases harboring structural features indicative of its possible regulatory mechanism(s). This protein contained a tandem DH/PH domain closely related to those of Rho-specific GEFs, a PDZ domain, a proline-rich domain, and an area of homology to Lsc, p115-RhoGEF, and a Drosophila RhoGEF that was termed Lsc-homology (LH) domain. This novel molecule, designated PDZ-RhoGEF, activated biological and biochemical pathways specific for Rho, and activation of these pathways required an intact DH and PH domain. However, the PDZ domain was dispensable for these functions, and mutants lacking the LH domain were more active, suggesting a negative regulatory role for the LH domain. A search for additional molecules exhibiting an LH domain revealed a limited homology with the catalytic region of a newly identified GTPase-activating protein for heterotrimeric G proteins, RGS14. This prompted us to investigate whether PDZ-RhoGEF could interact with representative members of each G protein family. We found that PDZ-RhoGEF was able to form, in vivo, stable complexes with two members of the Galpha12 family, Galpha12 and Galpha13, and that this interaction was mediated by the LH domain. Furthermore, we obtained evidence to suggest that PDZ-RhoGEF mediates the activation of Rho by Galpha12 and Galpha13. Together, these findings suggest the existence of a novel mechanism whereby the large family of cell surface receptors that transmit signals through heterotrimeric G proteins activate Rho-dependent pathways: by stimulating the activity of members of the Galpha12 family which, in turn, activate an exchange factor acting on Rho.  (+info)

Prion domain initiation of amyloid formation in vitro from native Ure2p. (6/1933)

The [URE3] non-Mendelian genetic element of Saccharomyces cerevisiae is an infectious protein (prion) form of Ure2p, a regulator of nitrogen catabolism. Here, synthetic Ure2p1-65 were shown to polymerize to form filaments 40 to 45 angstroms in diameter with more than 60 percent beta sheet. Ure2p1-65 specifically induced full-length native Ure2p to copolymerize under conditions where native Ure2p alone did not polymerize. Like Ure2p in extracts of [URE3] strains, these 180- to 220-angstrom-diameter filaments were protease resistant. The Ure2p1-65-Ure2p cofilaments could seed polymerization of native Ure2p to form thicker, less regular filaments. All filaments stained with Congo Red to produce the green birefringence typical of amyloid. This self-propagating amyloid formation can explain the properties of [URE3].  (+info)

Surface-induced polymerization of actin. (7/1933)

Living cells contain a very large amount of membrane surface area, which potentially influences the direction, the kinetics, and the localization of biochemical reactions. This paper quantitatively evaluates the possibility that a lipid monolayer can adsorb actin from a nonpolymerizing solution, induce its polymerization, and form a 2D network of individual actin filaments, in conditions that forbid bulk polymerization. G- and F-actin solutions were studied beneath saturated Langmuir monolayers containing phosphatidylcholine (PC, neutral) and stearylamine (SA, a positively charged surfactant) at PC:SA = 3:1 molar ratio. Ellipsometry, tensiometry, shear elastic measurements, electron microscopy, and dark-field light microscopy were used to characterize the adsorption kinetics and the interfacial polymerization of actin. In all cases studied, actin follows a monoexponential reaction-limited adsorption with similar time constants (approximately 10(3) s). At a longer time scale the shear elasticity of the monomeric actin adsorbate increases only in the presence of lipids, to a 2D shear elastic modulus of mu approximately 30 mN/m, indicating the formation of a structure coupled to the monolayer. Electron microscopy shows the formation of a 2D network of actin filaments at the PC:SA surface, and several arguments strongly suggest that this network is indeed causing the observed elasticity. Adsorption of F-actin to PC:SA leads more quickly to a slightly more rigid interface with a modulus of mu approximately 50 mN/m.  (+info)

Switch from an aquaporin to a glycerol channel by two amino acids substitution. (8/1933)

The MIP (major intrinsic protein) proteins constitute a channel family of currently 150 members that have been identified in cell membranes of organisms ranging from bacteria to man. Among these proteins, two functionally distinct subgroups are characterized: aquaporins that allow specific water transfer and glycerol channels that are involved in glycerol and small neutral solutes transport. Since the flow of small molecules across cell membranes is vital for every living organism, the study of such proteins is of particular interest. For instance, aquaporins located in kidney cell membranes are responsible for reabsorption of 150 liters of water/day in adult human. To understand the molecular mechanisms of solute transport specificity, we analyzed mutant aquaporins in which highly conserved residues have been substituted by amino acids located at the same positions in glycerol channels. Here, we show that substitution of a tyrosine and a tryptophan by a proline and a leucine, respectively, in the sixth transmembrane helix of an aquaporin leads to a switch in the selectivity of the channel, from water to glycerol.  (+info)

Molecular motors embedded within collections of actin and microtubule filaments underlie the dynamics of cytoskeletal assemblies. Understanding the physics of such motor-filament materials is critical to developing a physical model of the cytoskeleton and designing biomimetic active materials. Here, we demonstrate through experiments and simulations that the rigidity and connectivity of filaments in active biopolymer networks regulates the anisotropy and the length scale of the underlying deformations, yielding materials with variable contractility. We find that semiflexible filaments can be compressed and bent by motor stresses, yielding materials that undergo predominantly biaxial deformations. By contrast, rigid filament bundles slide without bending under motor stress, yielding materials that undergo predominantly uniaxial deformations. Networks dominated by biaxial deformations are robustly contractile over a wide range of connectivities, while networks dominated by uniaxial deformations ...
Introduction about biomaterial. Biopolymers (extraction from different sources, characterization. Relation between extraction process and chemical/physical properties of biopolymers. Chemical modification of biopolymers to obtain different properties/different shapes of materials. The applications of the biopolymers in different areas (medical, environmental, textile, pharmaceutics and tissue engineering applications). ...
Biopolymers can be sustainable, carbon neutral and are always renewable, because they are made from plant materials which can be grown indefinitely. These plant materials come from agricultural non food crops. Therefore, the use of biopolymers would create a sustainable industry. In contrast, the feedstocks for polymers derived from petrochemicals will eventually deplete. In addition, biopolymers have the potential to cut carbon emissions and reduce CO2 quantities in the atmosphere: this is because the CO2 released when they degrade can be reabsorbed by crops grown to replace them: this makes them close to carbon neutral.. Biopolymers are biodegradable, and some are also compostable. Some biopolymers are biodegradable: they are broken down into CO2 and water by microorganisms. Some of these biodegradable biopolymers are compostable: they can be put into an industrial composting process and will break down by 90% within six months. Biopolymers that do this can be marked with a compostable ...
Sporopollenin is one of the most chemically inert biological polymers. It is a major component of the tough outer (exine) walls of plant spores and pollen grains. It is chemically very stable and is usually well preserved in soils and sediments. The exine layer is often intricately sculptured in species-specific patterns (see image at right), allowing material recovered from (for example) lake sediments to provide useful information to palynologists about plant and fungal populations in the past. Sporopollenin has found uses in the field of paleoclimatology as well. Sporopollenin is also found in the cell walls of several taxa of green alga, including Phycopeltis (an ulvophycean) and Chlorella. The chemical composition of sporopollenin is not exactly known, due to its unusual chemical stability and resistance to degradation by enzymes and strong chemical reagents. Analyses have revealed a mixture of biopolymers, containing mainly long chain fatty acids, phenylpropanoids, phenolics and traces of ...
Biopolymers are a special class of polymers produced by living organisms. Starch, proteins and peptides, DNA, and RNA are all examples of biopolymers, in which the monomer units, respectively, are sugars, amino acids, and nucleic acids.A major but defining difference between polymers and biopolymers can be found in their structures. Polymers, including biopolymers, are made of repetitive units called monomers. Biopolymers inherently have a well defined structure: The exact chemical composition and the sequence in which these units are arranged is called the primary structure. Many biopolymers spontaneously fold into characteristic compact shapes (see also protein folding as well as secondary structure and tertiary structure), which determine their biological functions and depend in a complicated way on their primary structures. Structural biology is the study of the structural properties of the biopolymers. In contrast most synthetic polymers have much simpler and more random (or statistic) ...
Description of Institute of Biopolymers and Chemical Fibres ( IBWCh).. The Institutes research and development activities are of an interdisciplinary character comprising: biopolymers, functional thermoplastics including biodegradable, bioprocesses, biocatalysis in polymers and fibres, biomaterials, nanotechnology, processing of polymers into film, fibrous nano-and micro-materials, non-woven and other products, paper technology, environment protection. Development works aim on the implementing of research results in medicine, agriculture , textile and plastic industry, packaging and paper materials. Important R& D domains are in the elaboration of technologies and materials for: medical devices like functional dressings, resorbable implants, sealants for blood vessels; agriculture like environment-friendly plant care and protection agents, and biodegradable agrotextiles; textiles like special, biodegradable and composite fibres and nonwoven. IBWCh is a Coordinator of Inter-regional ...
This handbook focuses on biopolymers for both environmental and biomedical applications. It shows recent advances in technology in all areas from chemical synthesis or biosynthesis to end use applications.
This PhD project is a part of a large collaborative Industrial Partnership Programme between AMOLF, Wageningen University, University of Amsterdam and Unilever Research, entitled Hybrid soft materials: from physical mechanisms to designer products. The overall goal of the programme is to understand the physics of the assembly and visco-elastic properties of hybrid networks, consisting of mixtures of stiff and soft elements, which leads to the rich and complex multiscale physics that characterize real food products. The understanding of the design principles and the relation between the molecular, microscopic and mechanical properties of hybrid networks will be used in the design of new, improved systems, in particular new food products.. Job ...
The forces that multicellular tumor aggregates exert on their environment lead to non-linear, scale-invariant tissue deformations far away from the tumor, which can be exploited to quantify its collective contractility.
Biopolymers are polymers synthesized by living organisms that play a role in the formation of macromolecular structures and are synthesized via the covalent linkage of biological molecules
According to industry expert Tony OLenick, polymers are compounds made from monomers that are joined together in a chemical process. There are many different types, of which biopolymers have gained increasing interest.
The global biopolymer coatings market size was valued at USD XX million in 2019 and is predicted to register a CAGR of XX% from 2020 to 2026.. The report covers the current estimate and forecast for biopolymer coatings market on a global and regional level. The report provides an in-depth analysis of the biopolymer coatings market for the period 2016 - 2026, wherein 2019 is the base year and the period from 2020 to 2026 is the forecast period. Data for 2016- 2018 has been included as historical information. The study provides a holistic perspective on market growth, throughout the above forecast period in terms of revenue estimates (in US$ MN), across different geographies, which includes North America (NA), Europe (EU), Asia Pacific (APAC), Middle East & Africa (MEA) and Latin America (LATAM).. The report provides cross-sectional analysis of the biopolymer coatings market in terms of market estimates and forecasts for all the segments across different geographic regions. The report covers all ...
View Notes - Lecture on Biomolecules from CH 302 at University of Texas. Polymers and Biopolymers In the previous lecture we learned that by using carbon as the primary backbone, we can create a
Scientific Publications from Pr. Luc Averous on biodegradable polymers, biopolymers, bioplastics and compostable materials e.g., products based on renewable resources such as starch, to develop packaging
Rapid depletion of natural resources with continued demands of an increasing population and high consumption rates of todays world will cause serious problems in the future. This, along with environmental concerns, has directed research towards finding alternatives in variety of sectors including sustainable and environmentally friendly consumer goods. Biopolymers of bacterial origin, with their vast range of applications, biodegradability and eco-friendly manufacturing processes, are one of the alternatives for a more sustainable future. However, the cost of their production is a drawback. Simultaneous production processes have always been an option for researchers in order to reduce cost, but the variable requirements of microorganisms to produce both different and valuable products are a hindering factor. This review will look at some examples and identify ideas towards developing a successful strategy for simultaneous production of bio-products.. ...
A open-source software for biopolymer network extraction and quantification in 2D and 3D
abstract = {Herein we report a multiplated and biopolymeric-based optical bioassay for organophosphate detection based on the use of acetylcholinesterase (AChE) as biocomponent and biopolymeric electrospun fibrous mats as eco-designed supports for AChE immobilisation. The principle of the detection relays on the decrease of enzymatic activity due to the capability of the organophosphorus pesticides to irreversibly inhibit AChE, which is optically detected using Ellman colorimetric method. The proposed bioassay consists in a novel, cost-effective, and multiplex-based 96-well system, in combination with customised biopolymeric membranes modified with AChE, with the aim to deliver a sustainable analytical tool. Indeed, the designed set-up should provide and guarantee several advantages, including: i) the re-use of plastic multi-plate with the only replacement of polymer dishes in the case of inhibition absence; ii) the exploiting of the properties of the immobilised enzyme, i.e. multiple analysis ...
Pal, Sunit and Prabhakaran, Erode N (2018) Hydrogen bond surrogate stabilized water soluble 3(10)-helix from a disordered pentapeptide containing coded alpha-amino acids. In: TETRAHEDRON LETTERS, 59 (26). pp. 2515-2519. Tumminakatti, Shama and Reddy, Damodara N and Prabhakaran, Erode N (2015) Exploring the Consequences of a Representative ``Disallowed Conformation of Aib on a 3(10)-Helical Fold. In: BIOPOLYMERS, 104 (1). pp. 21-36. Tumminakatti, Shama and Reddy, Damodara N and Prabhakaran, Erode N (2015) Exploring the Consequences of a Representative ``Disallowed Conformation of Aib on a 3(10)-Helical Fold. In: BIOPOLYMERS, 104 (1). pp. 21-36. Tumminakatti, Shama and Reddy, Damodara N and Prabhakaran, Erode N (2015) Exploring the Consequences of a Representative ``Disallowed Conformation of Aib on a 3(10)-Helical Fold. In: BIOPOLYMERS, 104 (1). pp. 21-36. Tumminakatti, Shama and Khatri, Bhavesh and Krishnamurti, Vinayak and Athavale, Vishikh and Prabhakaran, Erode N (2015) Solution ...
We use our expertise and our experimental tools to investigate the properties of biological materials and to study the behavior of cells. Much of our focus is on developing an understanding of the mechanical properties of biopolymer networks, formed by reconstituting proteins into gelled networks. These include networks of actin, microtubules, intermediate filaments, fibrin and collagen. We combine visualization of the network structure with probes of their mechanical properties to understand the nature of these properties.
As the molecular top-down causality emerging through comparative genomics is combined with the bottom-up dynamic chemical networks of biochemistry, the molecular symbiotic relationships driving growth of the tree of life becomes strikingly apparent. These symbioses can be mutualistic or parasitic across many levels, but most foundational is the complex and intricate mutualism of nucleic acids and proteins known as the central dogma of biological information flow. This unification of digital and analog molecular information within a common chemical network enables processing of the vast amounts of information necessary for cellular life. Here we consider the molecular information pathways of these dynamic biopolymer networks from the perspective of their evolution and use that perspective to inform and constrain pathways for the construction of mutualistic polymers.
A biopolymer is a polymer that is produced by a living organism, such as DNA, RNA, starch, cellulose and proteins. Cellulose is the most common biopolymer and organic compound found on...
This review sets out to examine the current trends in biopolymer science and is accompanied by over 400 abstracts from papers and books in the Rapra Polymer Library database, to facilitate further reading on this subject. A subject index and a company index are included.
A novel approach to hierarchical peptide-protein and protein-protein docking is described and evaluated. Modeling procedure starts from a reduced space representation of proteins and peptides. Polypeptide chains are represented by strings of alpha-carbon beads restricted to a fine-mesh cubic lattice. Side chains are represented by up to two centers of interactions, corresponding to beta-carbons and the centers of mass of the remaining portions of the side groups, respectively. Additional pseudoatoms are located in the centers of the virtual bonds connecting consecutive alpha carbons. These pseudoatoms support a model of main-chain hydrogen bonds. Docking starts from a collection of random configurations of modeled molecules. Interacting molecules are flexible; however, higher accuracy models are obtained when the conformational freedom of one (the larger one) of the assembling molecules is limited by a set of weak distance restraints extracted from the experimental (or theoretically predicted) ...
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The order in which building blocks are arranged in the biopolymers DNA, RNA and proteins is highly meaningful. It constitutes the basis of biological information necessary for living matter to function. This information, however, is not inherent in the building blocks. The rules of chemistry define how building blocks such as the four types of deoxyribonucleotides may be linked to form DNA, much the same way as the rules of grammar define the order in which letters of the alphabet may be arranged to spell words or how words may be put in proper order to make meaningful sentences. The rules of grammar, however, are not adequate for choosing the letters to be arranged as words or words, which are to appear in sentences. This sort of information has to be superimposed upon the laws of grammar by the writer of words and sentences. Similarly, biological information residing in the biopolymers DNA, RNA and protein needs to be supplied by an intelligence, using the rules of chemistry ...
This conference will bring together researchers and students from fields related protein material, including new bioplastics, food production, biomedicine, and nanomaterials. This year we will have a special focus on how protein material research can help us move towards the UN sustainable development goals. The conference is an initiative of the Swedish Protein Materials Network (https://sweprotmat.biotech.kth.se). Thanks to generous support of the KTH sustainability office, FORMAS and the Swedish Research Council (VR), the conference is free of charge for all participants. We have already signed up a number of exceptional national and international speakers:. ...
The Biopolymers lab is room E17-415. Inside, there is a brown fridge with a clear plastic thing attached to the front. Put your request from in the clear plastic thing and your large eppendorf tube inside the fridge. Now you get to wait for your sequencing results to come back (usually 3-4 days). Note that the Biopolymers lab is generally only open during normal business hours, Mon-Fri, 9-5 ...
Savinskaya L. A., Usenko V. S., Lyzogubov V. V., Pogrebnoy P. V., Palchevsky S. S., Ovcharenko G. V., Cheshuk V. S., Gout I. T., Matsuka G. Kh., Filonenko V. V ...
Rybalko S. L., Khristova M. L., Shapiro A. V., Varbanets L. D., Zubkova N. L., Zadorozhna V. I., Ivanska N. V., Sorokulova I. B., Grytsak T. F., Furzikova T. M., Pinchuk I. I., Patskovski Yu. V., Diadiun S. T., Smirnov V. V., Urdaci M. A ...
ISSNs: 0006-3525. Additional searchable ISSN (Electronic): 1097-0282. John/Wiley & Sons, Inc. John/Wiley & Sons Ltd., United States. BFI (2018): BFI-level 1, Scopus rating (2016): CiteScore 1.83 SJR 0.803 SNIP 0.722, ISI indexed (2013): ISI indexed yes, Web of Science (2018): Indexed yes. Central database. Journal ...
The global biopolymer films market, in terms of volume is expected to exceed 17 million tons by 2022. It had a market demand of 5 million tons in 2013.
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Perfect Separation Solutions for Polymers, Biopolymers, Polysaccharides and Proteins: From a single molar mass reference material to turn-key systems for fully compliant (multi-detection) GPC/SEC, IPC or 2D, PSS offers all products and services for successful macromolecular analysis and expert support by liquid chromatography enthusiasts.
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TY - JOUR. T1 - Sugar-based biopolymers as novel imaging agents for molecular magnetic resonance imaging. AU - Han, Zheng. AU - Liu, Guanshu. PY - 2019/7/1. Y1 - 2019/7/1. N2 - Sugar-based biopolymers have been recognized as attractive materials to develop macromolecule- and nanoparticle-based cancer imaging and therapy. However, traditional biopolymer-based imaging approaches rely on the use of synthetic or isotopic labeling, and because of it, clinical translation often is hindered. Recently, a novel magnetic resonance imaging (MRI) technology, chemical exchange saturation transfer (CEST), has emerged, which allows the exploitation of sugar-based biopolymers as MRI agents by their hydroxyl protons-rich nature. In the study, we reviewed recent studies on the topic of CEST MRI detection of sugar-based biopolymers. The CEST MRI property of each biopolymer was briefly introduced, followed by the pre-clinical and clinical applications. The findings of these preliminary studies imply the enormous ...
Biopolymers like starch and PLA are particularly used in the food packaging industry owing to properties like moisture resistance and transparency. Biomass comes from crops such as sugar beet, potatoes or wheat: when used to produce biopolymers, these are classified as non food crops. There are a number of biophysical techniques for determining sequence information. Elevated temperatures cause the gelatin to melts and exists as coils, whereas lower temperatures result in coil to helix transformation. This book presents two aspects of biopolymers; products and applications. Biopolymers will break down, and some are suitable for domestic composting.[8]. The convention for a polypeptide is to list its constituent amino acid residues as they occur from the amino terminus to the carboxylic acid terminus. Some biopolymers- such as PLA, naturally occurring zein, and poly-3-hydroxybutyrate can be used as plastics, replacing the need for polystyrene or polyethylene based plastics. These plant materials ...
DA-SILVA, Ivson Bezerra et al. Sugarcane Biopolymer as a Guide Tube in the Regeneration of Peripheral Nerves in Rats. Int. J. Morphol. [online]. 2019, vol.37, n.1, pp.289-295. ISSN 0717-9502. http://dx.doi.org/10.4067/S0717-95022019000100289.. Peripheral nerve regeneration is a serious clinical problem. The goal of this work was to evaluate comparatively a biopolymer tube of sugarcane with an expanded polyethylene tube as a tube guide in peripheral nerve regeneration. Fourteen male albino Wistar rats were used, separated into three different groups: control (CG), lesion + polyethylene tube (PG) and lesion + sugarcane biopolymer (SBG). At 60 days old, animals from the PG and SBG underwent surgery for tubulization of the sciatic nerve, and 60 days after the injury they were sacrificed for collection of the nerve. In the analysis of the number of nerve fibers, a smaller number was seen in the PG and SBG groups compared to the CG, no difference was seen between the PG and SBG groups (p,0.05). With ...
Mucin networks are viscoelastic fibrillar aggregates formed through the complex self-association of biopolymeric glycoprotein chains. The networks form a lubricious, hydrated protective shield along epithelial regions within the human body. The critical role played by mucin networks in impacting the transport properties of biofunctional molecules (e.g., biogenic molecules, probes, nanoparticles), and its effect on bioavailability are well described in the literature. An alternate perspective is provided in this paper, presenting mucins complex network structure, and its interdependent functional characteristics in human physiology. We highlight the recent advances that were achieved through the use of mucin in diverse areas of bioengineering applications (e.g., drug delivery, biomedical devices and tissue engineering). Mucin network formation is a highly complex process, driven by wide variety of molecular interactions, and the network possess structural and chemical variations, posing a great
Biopolym. Cell is an open access peer-reviewed international journal that publishes original contributions in molecular biology and related areas. The journal was founded in 1985 as Биополимеры и клетка (1985-2009), Біополімери і клітина (2001-2009). In 2009 journal was renamed to Biopolymers and Cell (Biopolym. Cell). Biopolym. Cell is issued bimonthly, one volume per year. Since 2014 the articles are accepted and published in print version in English. Biopolymers and cell is indexed and/or abstracted in Scopus, SJR (2013 - 0.188), Cites per Doc. (2y) = 0.417 (it is computed using the same formula that journal impact factor TM(Thomson Reuters)), Index Copernicus, BIOSIS Previews, Biological Abstracts, DOAJ, elibrary.ru, Russian index of scientific citations, EBSCO, HINARI, referative journals Dzherelo (Ukraine), Medical Journal Links and VINITI (Russian Federation ...
Biopolymers for Geotechnical Applications. A number of bacteria, e.g., Alcaligenes eutrophus, have been employed to produce large amounts of intracellular polyester, poly-β-hydroxy butyrate or valerate. These polymer mixtures or copolymers are only sparingly soluble in water, and are stable between pH 3-11 under 10-100°C. These polymers are found to be ideal binders for soil that the strength of soil can be enhanced. For porous media such as sand or clay the permeability can be reduced to almost one million fold; therefore, the bacteria derived polymers are perfect plugging agents for stopping the plumes of subsurface pollutants. This is obviously usethl for on-site contaminant-control for hazardous wastes or chemicals. The microbial polymers, including the extracellulosic polymer, can be used as selective plugging agents, so that the concentration of pollutant can be partitioned (or bio-barrier) in different zones and pockets to allow bioremediation to follow (zonal bioremediation
The roles of different extracellular polymeric substance (EPS) fractions in microbial communities, such as periphytic biofilms, are unclear. In this study, three EPS fractions extracted from a periphytic biofilm were employed to investigate their ability to affect Fe2O3 nanoparticle (IONP) toxicity. The addi
Life is widely believed to have evolved from a far simpler, self-replicating molecular system. However, the origin of the informational biopolymers (i.e. proteins, RNA, DNA) and the evolutionary path that led to early life remains obscure. The RNA world hypothesis posits that a hypothetical period once existed when information storage (genetics) and chemical catalysis (enzymatic activity) was once solely, or more heavily, the responsibility of RNA, before the advent of DNA and coded protein synthesis. A persistent challenge to this hypothesis is the lack of a plausible prebiotic pathway for the spontaneous formation of RNA polymers. We are investigating the possible origins of the chemical building blocks of RNA, and the hypothesis that RNA is largely the result of evolution - the descendant of an ancestral RNA-like polymer that had a different backbone and different nucleobases, a polymer that was much easier to assemble than present day RNA. As part of this research, we have demonstrated that ...
Figure 1. Yearly number of publication related to mucins as reported by scicurve.com, using the keyword mucins.. This is because mucin research spans over many fields. Biologists have been intrigued by mucins since long. But more recently, microbiologists studying our microbiome have new reasons to find this class of biopolymers particularly exciting. For instance, they realized that intestinal mucus plays key roles in the behavior of both pathogenic and commensal bacteria. This will surely lead to many more microbiology studies with mucus/mucins as a key component (1,2). Similarly, recent findings in immunology describing interactions between dendritic cells and mucin-associated glycans will also attract attention to secreted mucins in that field (3).. Some physicists and biophysicists are also fascinated by mucins. Tribologists are trying to understand and recreate mucins efficient lubricity that is so precious for a healthy mouth and gastrointestinal tract (4,5). The field of oral drug ...
This course comprises three main topics. Biopolymers - Covering aspects of the structures properties, and applications of major classes of biopolymeric material such as DNA, RNA and proteins, as well as a wide range of naturally occurring biopolymers derived from renewable resources, such as polyesters. Glycobiology - This section will introduce the role of carbohydrates in biological systems. Starting from basic concepts and terminology specific for carbohydrate chemistry, the following areas will be illuminated: properties and structures of common polysaccharides (e.g. amylose, cellulose, chitin, chitosan, peptidoglycans, pectins, dextrans, glycosaminoglycans, proteoglycans), chemical and enzymatic synthesis and degradation, complex carbohydrates (case studies: human and bacterial structures), glycoconjugates (case studies: glycoproteins, glycolipids), carbohydrates in medicine (case studies: lead structure, vaccine, inhibitor), carbohydrate recognition (case studies: lectins) in e.g. ...
In resting muscle, SCs are arrested in a reversible quiescent phase and they have capacity to rapidly reactivate in response to injury [45]. The molecular mechanisms involved in G0 exit have recently been the subject of intense studies [15, 46-48]. However, SCs are difficult to maintain in this quiescent state in vitro and the molecular analysis of quiescent SCs on the materials used as culture substrates (tissue culture polystyrene, plastic coated with proteins) is technically challenging due to the spontaneous shift toward commitment. Thus, most of the recent studies of quiescence in SCs are performed either directly in vivo [15, 46], in situ with SCs on the fiber [47] or ex vivo but a few hours after isolation [49], already with a potential and variable shift toward an activated state. These conditions greatly limit the amount of available cells and the full characterization of the studied cells. Furthermore, it is difficult to make direct comparisons between these studies due to the unknown ...
https://www.hexaresearch.com/research-report/biopolymer-films-market. Based on applications, the global biopolymer films market is divided into flexible packaging, rigid packaging, automotive, textiles, consumer goods, agriculture & horticulture, and others. Flexible packaging could be the largest application segment in the forthcoming years. It would generate nearly 27 million tons by 2024, at over 3.8% CAGR during the forecast period. This segment may generate over USD 106 billion by 2024, growing at a CAGR above 4.2% over the next eight years.. Demand for flexible packaging will fuel industry demand for biopolymer films. Flexible packaging offers benefits, such as additional shelf life and preservation. Hence, it could witness high demand from pharmaceuticals and food & beverages.. Biopolymer films used in agriculture & horticulture are known as mulch films. They prevent the loss of humus and provide soils with appropriate amounts of carbon. Environmental concerns along with low labor costs ...
TY - ABST. T1 - Biodegradable micromechanical sensors. AU - Keller,Stephan Sylvest. AU - Greve,Anders. AU - Schmid,Silvan. AU - Davis,Zachary James. AU - Boisen,Anja. PY - 2011. Y1 - 2011. N2 - The development of biopolymers for food packaging, medical engineering or drug delivery is a growing field of research [1]. At the same time, the interest in methods for detailed analysis of biopolymers is increasing. Micromechanical sensors are versatile tools for the characterization of mechanical and thermal properties of polymers. For example, measurements of the resonance frequency of cantilevers were used to characterize thin polymer coatings in various environmental conditions [2]. Also, the influence of humidity on the Youngs modulus of SU-8 was evaluated [3]. However, introduction of biopolymers to microfabrication is challenging, as these polymers are affected by common processes such as photolithography or wet etching. Here, we present two methods for fabrication of biodegradable ...
Using bacterial genomes that have been entirely recoded, Yale scientists have developed a way to induce cells to produce novel protein-based polymers that can be used for new materials and therapeutics.. Cells usually assemble proteins using 20 amino acids and scientists have found it difficult to incorporate synthetic amino acids in more than a single or few positions in proteins. The new technology, described Nov. 16 in the journal Nature Biotechnology, shows how it is possible to incorporate many new synthetic amino acids into proteins and thus go beyond the standard 20 building blocks to endow completely new function.. No longer will scientists be limited in the quantity and diversity of novel amino acids they can use to make new therapeutics and materials in bacterial factories, the authors say.. Now we can introduce dozens of new synthetic building blocks with user-defined precision and at will - as many times as we want - to produce new compounds to improve drugs or functionalized ...
2-Methylene analogs of 1alpha-hydroxy-19-norvitamin D3: synthesis, biological activities and docking to the ligand binding domain of the rat vitamin D receptorGrzywacz, P. et al.The Journal of Steroid Biochemistry and Molecular Biology 89-90, 13-7, 2004. ...
Two-dimensional proton NMR studies on poly(VPGVG) and its cyclic conformational correlate, cyclo(VPGVG)3 (pages 819-833). D. W. Urry, D. K. Chang, N. R. Krishna, D. H. Huang, T. L. Trapane and K. U. Prasad. Version of Record online: 1 FEB 2004 , DOI: 10.1002/bip.360280404. ...
This book provides basic and applied information for a plethora of scientists in diverse disciplines, as well as textbook and reference for graduate and advanced undergraduate students. A distinctive chapter is dedicated to the modern industrial and biomedical applications of exopolysaccharides.
Elastic filaments play an important role in the behaviour of cells and biological tissues. In this paper a two-dimensional nonlinear elastic framework, incorporating both bending and stretching, for the behaviour of biopolymer filaments treated as one-dimensional continua is developed. Explicit formulas for the extension-force relationship are obtained which include dependence on the initial end-to-end distance of the filament, unlike some existing models in the literature of, for example, the worm-like chain. The approach adopted allows treatment of both flexible and semi-flexible filaments and has the flexibility to accommodate different degrees of approximation. A key ingredient in the application of the model is inclusion of a body force term in the equilibrium equation. This is essential for finding non-trivial solutions of the governing equations and boundary conditions for filaments under tension. This highlights certain inconsistencies in the mechanics evident in the biophysics ...
Therapies using T cells that are programmed to express chimeric antigen receptors (CAR T cells) consistently produce positive results in patients with hematologic malignancies. However, CAR T cell treatments are less effective in solid tumors for several reasons. First, lymphocytes do not efficiently target CAR T cells; second, solid tumors create an immunosuppressive microenvironment that inactivates T cell responses; and third, solid cancers are typified by phenotypic diversity and thus include cells that do not express proteins targeted by the engineered receptors, enabling the formation of escape variants that elude CAR T cell targeting. Here, we have tested implantable biopolymer devices that deliver CAR T cells directly to the surfaces of solid tumors, thereby exposing them to high concentrations of immune cells for a substantial time period. In immunocompetent orthotopic mouse models of pancreatic cancer and melanoma, we found that CAR T cells can migrate from biopolymer scaffolds and ...
We have attempted to develop a tissue-engineered artery and heart valve based on the approach of entrapping tissue cells within a forming collagen gel. The ability to harness the cell traction-induced contraction of the network of collagen fibrils to obtain the desired alignment of fibrils and cells will be described and explained. Recent efforts to drive compositional remodeling following the structural remodeling obtained via mechanically-constrained contraction, using fibrin as an alternative biopolymer to collagen for cell entrapment, with the goal of attaining the requisite mechanical properties, will be presented. Unlike the early structural remodeling, the subsequent compositional remodeling and associated tissue growth that occurs in fibrin presents major modeling challenges ...
We report the controlled reversible and irreversible folding behavior of a biopolymer film simply by tuning the solvent characteristics. Generally, solvent triggered folding of soft membranes or film is achieved by unfolding. Here, we show that this unfolding behavior can be suppressed/delayed or even completely el
A biologically active conjugate is disclosed comprising a biopolymer and a therapeutic agent joined by a disulfide bond. The conjugate, when formulated in a pharmaceutical composition with a suitable carrier, has improved in vivo stability and activity, and can be targeted to a variety of cells, tissues and organs.
Guo, M, Stuckey, DC and Murphy, RJ (2013) Is it possible to develop biopolymer production systems independent of fossil fuels? Case study in energy profiling of polyhydroxybutyrate-valerate (PHBV) ...
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There are four classes of biological molecules 3.3 Cells make a huge number of large molecules from a small set of small molecules There are four classes of biological molecules 1. Carbohydrates 2. Proteins 3. Lipids 4. Nucleic acids
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Research in the Lee group can be divided into six general areas: (1) selectively fluorinated organic thin films, (2) complex organic interfaces with controlled local composition, structure, and function, (3) biologically active interfaces, (4) nanoparticle growth and manipulation, (5) biopolymers and conducting polymers, and (6) polymerization catalyst development. The common thread that ties all of the research areas together is the use of synthesis be it organic, inorganic, organometallic, or solid-state to prepare new materials for technological applications. Progress in each of the areas requires the successful development and integration of a wide range of research skills, starting with the synthesis of new materials, followed by the collection and analysis of data, and ending with the oral and written communication of the results. As a natural consequence of this integrated approach, students departing from the Lee group are equipped with an unusually broad range of research capabilities. ...
A biofilm is a population of bacteria growing on a surface and surrounded by a complex extracellular polymeric substance composed of proteins, glycoproteins, gl...
Learn how SEC coupled to multi-angle light scattering and viscometric detectors determines absolute molar mass, size and conformation of highly complex biopolymers.
PBS is associated to LEcole Doctorale Normande de Chimie (EDN 508) and to the inter-regional research federation, FR 3038 CNRS - INC3M (Institut Normand de Chimie Moléculaire, Macromoléculaire et Médicinal). This structure welcomes teacher/researchers from the University of Rouen and INSA of Rouen, researchers from CNRS, engineers, technicians and administrative staff from University and CNRS, PhD students and master students. Periodically, the laboratory welcomes also national or international researchers and interns for short visits.. The laboratory Polymers, Biopolymers, Surfaces is under the direction of Thierry JOUENNE, research director from CNRS.. The scientific project of the lab is focused on three thematic orientations:. ...
We apply the methods from statistical physics and fluid dynamics to study the dynamics of synthetic active systems - either colloidal, actuated with magnetic fields, or biochemical, consisting of biopolymers and motor proteins.. [more] ...
Biopolymers[edit]. Linear structure of cellulose -- the most common component of all organic plant life on Earth. * Note the ...
Linear biopolymers[edit]. All living organisms are dependent on three essential biopolymers for their biological functions: DNA ... Branched biopolymers[edit]. Raspberry ellagitannin, a tannin composed of core of glucose units surrounded by gallic acid esters ... 3 Linear biopolymers *3.1 Structural features *3.1.1 DNA is optimised for encoding information ... The most common macromolecules in biochemistry are biopolymers (nucleic acids, proteins, carbohydrates and lipids) and large ...
Biopolymers. 22 (12): 2577-637. doi:10.1002/bip.360221211. PMID 6667333.. .mw-parser-output cite.citation{font-style:inherit}. ...
Biopolymers. 55 (1): 31-49. doi:10.1002/1097-0282(2000)55:1,31::AID-BIP40,3.0.CO;2-9. PMID 10931440.. ...
"Biopolymers. 99 (2): 98-111. doi:10.1002/bip.22128. PMC 4017165 . PMID 23175385.. ...
Biopolymers. 91 (11): 943-52. doi:10.1002/bip.21282. PMID 19603496.. ...
Biopolymers. 31 (6): 605-12. doi:10.1002/bip.360310604. PMID 1932561.. CS1 maint: Multiple names: authors list (link) ...
A biopolymer comprising multiple linked nucleotides (as in DNA) is called a polynucleotide.[14] ... Wahl MC, Sundaralingam M (1997). "Crystal structures of A-DNA duplexes". Biopolymers. 44 (1): 45-63. doi:10.1002/(SICI)1097- ...
Cooperman BS (2003). "Oligopeptide inhibition of class I ribonucleotide reductases". Biopolymers. 71 (2): 117-31. doi:10.1002/ ...
Biotechnology of Biopolymers. ISBN 978-953-307-179-4.. *^ Xie, W.; McMahan, C.M.; Distefano, A.J. DeGraw, M.D.; et al. (2008 ...
Painter PC, Mosher LE, Rhoads C (July 1982). "Low-frequency modes in the Raman spectra of proteins". Biopolymers. 21 (7): 1469- ...
Linear biopolymersEdit. All living organisms are dependent on three essential biopolymers for their biological functions: DNA, ... Branched biopolymersEdit. Raspberry ellagitannin, a tannin composed of core of glucose units surrounded by gallic acid esters ... The most common macromolecules in biochemistry are biopolymers (nucleic acids, proteins, carbohydrates and lipids) and large ...
Biopolymers/macromolecules *proteins: primary structure - secondary structure - tertiary structure - conformation - native ...
Martin RB (December 1998). "Free energies and equilibria of peptide bond hydrolysis and formation". Biopolymers. 45 (5): 351- ... Biopolymers. 94 (5): 659-64. doi:10.1002/bip.21416. PMC 4001729. PMID 20564017. Wu G, Fang YZ, Yang S, Lupton JR, Turner ND ( ...
Biopolymers. 90 (6): 783-791. doi:10.1002/bip.21087. PMID 18798577. Arthropod defensin Padmanabhan Balaram India portal Biology ... Biopolymers. 84 (6): 615-624. doi:10.1002/bip.20595. PMID 16948121. Chaudhary, Nitin; Singh, Shashi; Nagaraj, Ramakrishnan ( ...
Biopolymers. 59 (4): 243-56. doi:10.1002/1097-0282(20011005)59:4. 3.0.CO;2-H. PMC 3282060. PMID 11473349. Nakayama N, Miyajima ...
Biopolymers. 88 (2): 208-16. doi:10.1002/bip.20700. PMID 17285588. Ovchinnikova TV, Shenkarev ZO, Nadezhdin KD, Balandin SV, ...
Faus I, Sisniega H (2004). "Sweet-tasting Proteins" (PDF). In Hofrichter M, Steinbüchel A (eds.). Biopolymers: Polyamides and ... Biopolymers. 39 (1): 95-101. doi:10.1002/(SICI)1097-0282(199607)39:1. 3.0.CO;2-B. PMID 8924630. Tancredi T, Pastore A, ...
Biopolymers. 91 (12): 1126-34. doi:10.1002/bip.21170. PMID 19226623. Manzano C, Contreras-Martel C, El Mortaji L, Izoré T, ...
Biopolymers. 75 (5): 367-375. doi:10.1002/bip.20150. ISSN 1097-0282. PMID 15457434. S2CID 28856028. Rabe, Martin; Aisenbrey, ...
Biopolymers. Wiley Online Library. 59 (5): 380-393. doi:10.1002/1097-0282(20011015)59:5. 3.0.CO;2-T. Miyamoto K, Nakagawa T, ...
Biopolymers. 29 (6-7): 1105-19. doi:10.1002/bip.360290621. hdl:11858/00-001M-0000-0013-0DE3-9. PMID 1695107. Ding Y, Lawrence ...
Richardson JS, Richardson DC (March 2013). "Studying and polishing the PDB's macromolecules". Biopolymers. 99 (3): 170-82. doi: ...
Biopolymers. 44 (3): 217-239. doi:10.1002/(SICI)1097-0282(1997)44:3. 3.0.CO;2-Y. PMID 9591477. (pdf) John SantaLucia Jr. (1998 ... Biopolymers. 99 (12): 978-88. doi:10.1002/bip.22322. PMID 23784745. Yakovchuk, P; Protozanova, E; Frank-Kamenetskii, MD (2006 ...
Sedova A, Banavali NK (2016). "RNA approaches the B-form in stacked single strand dinucleotide contexts". Biopolymers. 105 (2 ...
Biopolymers. 22 (12): 2577-637. doi:10.1002/bip.360221211. PMID 6667333. S2CID 29185760. Murzin AG, Brenner SE, Hubbard T, ...
Biopolymers. 17 (10): 2341-60. doi:10.1002/bip.1978.360171005. PMID 24624489. el Hassan MA, Calladine CR (May 1996). "Propeller ...
Biopolymers. 16 (3): 573-82. doi:10.1002/bip.1977.360160308. PMID 843604. Chworos A, Jaeger, Luc (2007). "Nucleic acid ...
Biopolymers. 64 (2): 95-105. doi:10.1002/bip.10126. PMID 11979520. Bloom JD, Raval A, Wilke CO (January 2007). "Thermodynamics ...
Such a sequence is called the primary structure of the biopolymer.. Sugars[edit]. Sugar-based biopolymers are often difficult ... Biopolymers are biodegradable, and some are also compostable. Some biopolymers are biodegradable: they are broken down into CO2 ... As a result, biopolymers have a polydispersity index of 1.[8]. Conventions and nomenclature[edit]. Polypeptides[edit]. The ... Biopolymers are polymers produced by living organisms; in other words, they are polymeric biomolecules. Since they are polymers ...
Wiley-VCH, Weinheim Biopolymers Biopolymers represent the most abundant organic compounds in the biosphere and constitute the ... Biopolymers. 10 Volumes + Index. Steinbüchel, Alexander (Editor). 1. Edition April 2003. 5804 Pages, Hardcover. 1500 Pictures. ... Biopolymers represent the most abundant organic compounds in the biosphere and constitute the largest fraction of cells. Seven ... This encyclopedia provides a throughout overview of the occurrence of metabolism and biopolymers...". Datenbank DKILit, FIZ. ...
Biopolymers are made from organic substances, such as plants and microorganisms. Learn more about biopolymers and recycling ... Fermentation: Bacteria or other microorganisms mass-produce the biopolymers in bioreactors (fermentation tanks). The ... Furthermore, new research into biopolymers may produce new bioplastic products from renewable resources that are biodegradable ... biopolymers (lactic acid, polyesters) are extracted from the bioreactors and chemically processed into plastics. ...
Microalgae Screening Cultivation Biopolymers Carbohydrates Sugar analysis This is a preview of subscription content, log in to ... Halaj M, Paulovičová E, Paulovičová L, Jantová S, Cepák V, Lukavský J, Capek P (2018) Biopolymer of Dictyosphaerium ...
Purchase Handbook of Biopolymers and Biodegradable Plastics - 1st Edition. Print Book & E-Book. ISBN 9781455728343, ... Handbook of Biopolymers and Biodegradable Plastics 1st Edition. Properties, Processing and Applications. Write a review ... bio-polymer processors and fabricators - and for industry sectors utilizing biopolymers - automotive, packaging, construction, ... Biopolymers and Biodegradable Plastics are a hot issue across the Plastics industry, and for many of the industry sectors that ...
This book provides basic and applied information for a plethora of scientists in diverse disciplines, as well as textbook and reference for graduate and advanced undergraduate students. A distinctive chapter is dedicated to the modern industrial and biomedical applications of exopolysaccharides.
Biopolymers and Cell Web site Institute of Molecular Biology and Genetics of NASU Web site 2010-Biopolymers and Cell Celebrates ... Biopolymers and Cell (Biopolym. Cell) is a scientific journal issued by the National Academy of Sciences of Ukraine and ... Biopolymers and Cell is indexed and/or abstracted in: Scopus, SJR, Index Copernicus, BIOSIS Previews, elibrary.ru, Medical ... Matsuka, the founder of Biopolymers and Cell was a director of [Institute of Molecular Biology and Genetics]. He was succeeded ...
Biopolymers is a biweekly peer-reviewed scientific journal covering the study of biopolymers from a biochemical and biophysical ... "Publishers Announcement". Biopolymers. 70 (4): v. December 2003. doi:10.1002/bip.10588. "Journal". American Peptide Society. ... merged with Biopolymers in 2004). Peptide Science is the affiliate journal of the American Peptide Society. According to the ...
This review describes how these biopolymers have been successfully incorporated into the internal and external aqueous phases ...
... Petr Slepička,1 Iva Michaljaničová,1 Nikola Slepičková Kasálková ... "Cytocompatibility of Plasma and Thermally Treated Biopolymers," Journal of Nanomaterials, vol. 2013, Article ID 238742, 10 ...
DuPont Launches Next Family of Bio-Polymers; Energy and Greenhouse Gas Savings. DuPont Launches Next Family of Bio-Polymers; ... DuPont to Produce New High-Performance Bio-Polymers for Automotive, Other Markets. DuPont to Produce New High-Performance Bio- ... Posted on 27 September 2007 in Bio-polymers, Biodiesel, Biomass, Biotech, Cellulosic ethanol, Fuels , Permalink , Comments (1) ... Posted on 11 October 2006 in Bio-polymers, Biodiesel, Biotech, Cellulosic ethanol, Ethanol, Fuels , Permalink , Comments (10) ...
Can it be done? That is, development of a sustainable green chemistry platform for production of acetone and downstream drop-in fuel and commodity products ...
Two-dimensional proton NMR studies on poly(VPGVG) and its cyclic conformational correlate, cyclo(VPGVG)3 (pages 819-833). D. W. Urry, D. K. Chang, N. R. Krishna, D. H. Huang, T. L. Trapane and K. U. Prasad. Version of Record online: 1 FEB 2004 , DOI: 10.1002/bip.360280404. ...
Purchase Structural Studies on Nucleic acids and Other Biopolymers - 1st Edition. Print Book & E-Book. ISBN 9780122229022, ... Structural Studies on Nucleic acids and Other Biopolymers 1st Edition. 0.0 star rating Write a review ... Volume II basically deals with the structural studies on nucleic acids and other biopolymers. This volume gives much emphasis ...
... biopolymer hydrogel self-assembly and how to control this to develop tissue scaffolds, and the control of biopolymer self- ... biopolymer hydrogel self-assembly and how to control this to develop tissue scaffolds, and the control of biopolymer self- ...
... A number of bacteria, e.g., Alcaligenes eutrophus, have been ... Biopolymers for Geotechnical Applications by Teh Fu Yen, Iris C. Y. Yang, Shiva Karimi, Geoffrey R. Martin, Document Type: ...
Pronova Biopolymer) in 279.0 grams of deionized water. A 150.0-gram aliquot of the chitosan solution was then diluted with ...
A biologically active conjugate is disclosed comprising a biopolymer and a therapeutic agent joined by a disulfide bond. The ... wherein the biopolymer is hyaluronic acid. 4. The chemically modified biopolymer of claim 1, wherein the biopolymer is selected ... wherein the biopolymer is hyaluronic acid. 12. The chemically modified biopolymer of claim 9, wherein the biopolymer is ... The chemically modified biopolymer of claims 9. or 13. wherein R is an amino group. 16. The chemically modified biopolymer of ...
Cellulose is the most common biopolymer and organic compound found on... ... A biopolymer is a polymer that is produced by a living organism, such as DNA, RNA, starch, cellulose and proteins. ... Many biopolymers are biodegradable and used in compost. These biopolymers can break down up to 90 percent in as little as six ... A biopolymer is a polymer that is produced by a living organism, such as DNA, RNA, starch, cellulose and proteins. Cellulose is ...
Malinova, I., Kunz, H-H., Alseekh, S., Herbst, K., Fernie, A.R., Gierth, M., and Fettke, J. (2014). Reduction of the cytosolic phosphoglucomutase in Arabidopsis reveals impact on plant growth, seed and root development, and carbohydrate partitioning. PLoS One 9(11): e112468. Zhang, Y., Sun, F., Fettke, J., Schöttler, MA., Ramsden, L., Fernie, A.R., and Lim B.L. (2014). Heterologous expression of AtPAP2 in transgenic potato influences carbon metabolism and tuber development. FEBS Lett. 588: 3726-31. Kunz, H-H., Zamani-Nour, S., Haeusler, R.E., Ludewig, K., Schroeder, J.I., Malinova, I., Fettke, J., Flügge, U-I., and Gierth, M. (2014). Loss of Cytosolic Phosphoglucose Isomerase (cPGI) affects carbohydrate metabolism in leaves and is essentail for fertility of Arabidopsis thaliana. Plant Physiol. 166: 753-65. Brust, H., Lehmann, T., D´Hulst, C., and Fettke, J. (2014). Analysis of the functional interaction of Arabidopsis starch synthase and branching enzyme isoforms reveals that the cooperative ...
Welcome to the Biopolymer Analytics Group led by apl Prof. Dr. habil Joerg Fettke. Our lab is interested in primary metabolism ...
Home , All Products & Services Categories , Plastics, Polymers & Resins , Bio Polymers Home , All Products & Services ... Home , All Products & Services Categories , Plastics, Polymers & Resins , Bio Polymers Home , All Products & Services ...
Structural Characterization of Biopolymers by Analytical Separation Techniques with Advanced Detectors. *Absolute Molar Mass ... Structural Characterization of Biopolymers by Analytical Separation Techniques with Advanced Detectors. *Absolute Molar Mass ... Structural Characterization of Biopolymers by Analytical Separation Techniques with Advanced Detectors. *Absolute Molar Mass ... Biopolymers Application Notes. Branching ratios, absolute molar mass and size of natural polymers. ...
The osteoinductive surface modification comprises a biopolymer matrix coating that is seeded with periosteal cells that have ... which enables the biopolymer to undergo crosslinking with a suitable crosslinking reagent; a hydrolyzable biopolymer such as ... is a graph showing the effect of PLA content on the percentage of cell seeding into the biopolymer matrix coating of a ... is a graph showing the density of the biopolymer matrix foam coating as a function of the concentration of the preparation ...
... Mauro Ravera. ,1 Elisabetta Gabano. ,1 ... Polyanionic Biopolymers for the Delivery of Pt(II) Cationic Antiproliferative Complexes,. Bioinorganic Chemistry and ...
HPLC Columns and Chromatographic Media for the Analysis and Purification of Biopolymers. Biopolymers, including peptides, ... Our portfolio of U/HPLC and FPLC columns for biopolymer separations is organized by mode of chromatography, and by column brand ... In addition to these structural (and functional) complexities, an individual biopolymer is typically present at low ... technical papers and exciting separation tools to advance your biopolymer research. ...
... CRC Crit Rev Biochem. 1977 Nov;4(4):371-431. doi: 10.3109/ ...
Catherine Picarts research focuses on the assembly of biopolymers, protein/lipid interactions, and musculo-skeletal tissue ...
Chapter 7 - Polyphosphoesters: An old biopolymer in a new light 191. Kristin N. Bauer, Hisaschi T.C. Tee, Evandro M. ... Describes biopolymers from a synthetic perspective, which other similar books do not do. • Covers areas that include: ...
  • Polymer-Biopolymers 2019 is an event delivering the concept of biobased world across the globe. (bvents.com)
  • LOS ANGELES - Oct. 12, 2019 - PRLog -- Dr. Kenneth Benjamin Hughes, board-certified, Harvard-trained plastic surgeon in Los Angeles, has received hundreds of inquiries from patients all over the US and throughout the world in regard to silicone and biopolymer injection removal. (prlog.org)
  • Biopolymers (extraction from different sources, characterization. (vutbr.cz)
  • aims to bring together leading academic scientists, researchers and research scholars to exchange and share their experiences and research results on all aspects of Molecular Characterization of Biopolymers, Biobased Bioplastics and Spectroscopy. (waset.org)
  • Also, high quality research contributions describing original and unpublished results of conceptual, constructive, empirical, experimental, or theoretical work in all areas of Molecular Characterization of Biopolymers, Biobased Bioplastics and Spectroscopy are cordially invited for presentation at the conference. (waset.org)
  • ICMCBBBS 2021 has teamed up with the Special Journal Issue on Molecular Characterization of Biopolymers, Biobased Bioplastics and Spectroscopy . (waset.org)
  • To investigate corneal epithelial cell adhesion, proliferation, viability, and characterization on biopolymers based on chitosan-gelatine (C-G) to be further used to reconstruct the damaged ocular surface. (arvojournals.org)
  • They examine the current state of the art, new challenges, and opportunities, discussing all the synthetic routes to the generation of both micro- and nano-morphologies, as well as the synthesis, characterization and application of porous biopolymers. (kobo.com)
  • A biopolymer is a polymer that is produced by a living organism, such as DNA, RNA, starch, cellulose and proteins. (reference.com)
  • Photonics of biopolymers discusses the processes of energy transformation in photoexcited proteins, nucleic acids, membranes and model systems. (indigo.ca)
  • Both strategies are employed in a biopolymer made from intact keratin proteins and keratin peptides from the wool of New Zealand sheep. (cosmeticsandtoiletries.com)
  • The response of biopolymers to a crowded environment is another interesting issue because 20-40% volume of a cell is occupied by various cellular components such as ribosomes and proteins in vivo. (umd.edu)
  • During the past few decades, much research has been reported on the formation of insoluble monomolecular films of lipids and biopolymers (synthetic polymers and proteins) on the surface of water or at the oil-water interface. (dymocks.com.au)
  • The global biopolymer coatings market is segmented based on their material types as polysaccharides, proteins, and lipid compounds. (sbwire.com)
  • The book covers the recently reported nanomaterials consisting of biopolymers such as polysaccharides (i.e., plant, animal, bacteria, algae and fungi-derived) and proteins in terms of their structures, synthetic protocols and characterizations. (researchandmarkets.com)
  • The 5th Edition of ACI's European Biopolymer Summit will be taking place on 14th - 15th February 2018 in Dusseldorf, Germany . (wplgroup.com)
  • Cellulose is the most common organic compound and biopolymer on Earth. (wikipedia.org)
  • Sugars and cellulose are abundant biopolymers and some of the most common organic compounds. (cosmeticsandtoiletries.com)
  • Chitin is second only to cellulose as the most abundant biopolymer found in nature. (sigmaaldrich.com)
  • In a follow-up to the 2010 paper, MacLachlan's group has now conducted a comprehensive study of the preparation of chiral nematic mesoporous silica, published online on August 2, 2013, in Advanced Functional Materials ( 'Biopolymer Templated Glass with a Twist: Controlling the Chirality, Porosity, and Photonic Properties of Silica with Cellulose Nanocrystals' ). (nanowerk.com)
  • There are many different types of polymers including condensation polymers, radical polymers and biopolymers. (cosmeticsandtoiletries.com)
  • Molecular Interfacial Phenomena of Polymers and Biopolymers Edition by Chen, P and Publisher Woodhead Publishing. (vitalsource.com)
  • Due to the solvent-triggered hygromorphic response, biopolymer films exhibit huge potential as sensors, soft robots, drug delivery agents, morphing medical devices and in biomedical applications. (rsc.org)
  • Biopolymer Based Nanomaterials in Drug Delivery and Biomedical Applications presents a clear and detailed body of information on biopolymer chemistry and polymer sciences in drug delivery. (researchandmarkets.com)
  • The US dominates the global biopolymer coatings market owing to growing food and packaging industry, implementation of eco-friendly concepts, and rising industrialization and technology. (sbwire.com)
  • Key market players in the global biopolymer coatings market include Ashland Inc., Dow Chemical, Economy Polymers & Chemicals, JM Huber, Novamont, Archer-Daniels-Midland (ADM), Plantic Technologies, Cargill Inc. and Corbion NV. (sbwire.com)
  • Seven main classes of biopolymers are distinguished according to their chemical structures. (wiley-vch.de)
  • In fact, as their synthesis is controlled by a template-directed process in most in vivo systems, all biopolymers of a type (say one specific protein) are all alike: they all contain the similar sequences and numbers of monomers and thus all have the same mass. (wikipedia.org)
  • The synthesis of biopolymers and the precision of enzymatic systems result in the specific structure of biopolymers. (cosmeticsandtoiletries.com)
  • This operation is environmentally friendly since no toxic chemical is required for synthesis of the biopolymers and regeneration can be achieved easily. (epa.gov)
  • The glucosamine (1) and N-acetyl glucosamine (2) units of chitosan biopolymer. (sigmaaldrich.com)
  • biopolymer electrospinning This reference is intended for students of applied chemistry and biochemistry who require information about the properties and applications of polysaccharides (such as chitosan) and other protein-based biopolymers. (eurekaselect.com)
  • Together, these three innovations are transforming this natural biopolymer from an interesting substance in the laboratory into a product capable of replacing its petroleum-based counterparts on a broad scale in a number of highly diverse applications. (federallabs.org)
  • The specific lymphatic uptake and increased nodal retention of HA conjugates indicate significant potential for development as a natural biopolymer for intralymphatic drug delivery and imaging. (mdpi.com)
  • Over the last year, TreeHugger has posted on over 50 products offerings related to polylactic acid (PLA), a biopolymer originating from corn sugar fermentation (search our archives with the string "PLA" for links). (treehugger.com)
  • In contrary, most of the other biopolymers like polybutylene succinate (PBS), Polytrimethylene Terephthalate (PTT) and Polylactic Acid (PLA) are chemically synthesized using fermentation-derived monomers. (omicsonline.org)
  • Their project, SYNBIOMICS, is focused on upgrading key biopolymers from trees using enzymes, to create materials that provide higher value than what otherwise might be realized. (genomecanada.ca)
  • Biopolymers can be classified on the basis of the type of monomeric units such as polynucleotides, polypeptides or polysaccharides. (omicsonline.org)
  • Recently several exciting new directions have been pursued in this area, including developments in understanding amyloid fibrillization, liposome and polymersome self-assembly, DNA superstructure formation, biopolymer hydrogel self-assembly and how to control this to develop tissue scaffolds, and the control of biopolymer self-assemblies for applications in biomedicine. (rsc.org)
  • There should be tons of articles on this topic considering these are subjects that have been studied AT LEAST since I was a grad student (one of my friends was working on biopolymers as scaffolds for ligament repair). (physicsforums.com)
  • These biopolymers may be appropriate for the development of new tissue engineering scaffolds to restore vision by reconstructing the ocular surface. (arvojournals.org)
  • Bacteria or other microorganisms mass-produce the biopolymers in bioreactors (fermentation tanks). (howstuffworks.com)
  • A biologically active conjugate is disclosed comprising a biopolymer and a therapeutic agent joined by a disulfide bond. (freepatentsonline.com)
  • Bookmark this page as we continue to add new applications, technical papers and exciting separation tools to advance your biopolymer research. (sigmaaldrich.com)
  • The applications of the biopolymers in different areas (medical, environmental, textile, pharmaceutics and tissue engineering applications). (vutbr.cz)
  • This technology transfer success story encompasses three major technological breakthroughs, all centered on broadening the applications of the R. tropici biopolymer. (federallabs.org)
  • The information related to concepts, design protocols and applications of biopolymer-based nanoplatforms is presented here, with detailed chapters on Pectin based nanomaterials, Konjac glucomannan based nanomaterials, Guar gum-based nanomaterials, tailor-made gum Arabic based nanomaterials, among others. (researchandmarkets.com)
  • This first systematic scientific reference in the area of micro- and nanostructured biopolymer systems discusses in two volumes the morphology, structure, dynamics, properties and applications of all important biopolymers, as well as their blends, composites, interpenetrating networks and gels. (kobo.com)
  • This review provides an overview of increasing applications of plant-based biopolymers in microalgal biomass harvesting on laboratory and pilot-scale culture volumes. (springer.com)
  • Biopolymer Electrolytes: Fundamentals and Applications in Energy Storage provides the core fundamentals and applications for polyelectrolytes and their properties with a focus on biopolymer electrolytes. (barnesandnoble.com)
  • Biopolymer Nanocomposites features a logical organization and approach that make it easy for readers to take full advantage of the latest science and technology in designing these materials and developing new products and applications. (ellibs.com)
  • Throughout the book, detailed case studies of industrial applications underscore the unique challenges and opportunities in developing and working with biopolymer nanocomposites. (ellibs.com)
  • Exploring the full range of applications, Biopolymer Nanocomposites is recommended for researchers in a broad range of industries and disciplines, including biomedical engineering, materials science, physical chemistry, chemical engineering, and polymer science. (ellibs.com)
  • Typically, a biopolymer is made from biomass (non-fossil origin) materials. (omicsonline.org)
  • Recent studies demonstrating microalgal biomass recovery have been summarized discussing the advantages and limitations of plant-based biopolymers as emerging bio-flocculants. (springer.com)
  • Banerjee C, Ghosh S, Sen G, Mishra S, Shukla P, Bandopadhyay R (2014) Study of algal biomass harvesting through cationic cassia gum, a natural plant-based biopolymer. (springer.com)
  • This work creates a class of truly sustainable biopolymers, as they are both biorenewable and recyclable, based on a bioderived monomer previously declared non-polymerizable. (digitaltrends.com)
  • Sustainable, recyclable, and nontoxic nature is the key element boosting the consumer preference towards the biopolymer materials, thus boosting the growth of the biopolymer coatings market. (sbwire.com)
  • A major defining difference between biopolymers and synthetic polymers can be found in their structures. (wikipedia.org)
  • The most significant feature of these nanoscale biopolymers is that they are specifically pre-programmed within a synthetic gene template and can be controlled precisely in terms of sizes, compositions and functions at the molecular level. (epa.gov)
  • Synthetic genes encoding for the tunable biopolymers will be specifically tailored for the desired properties. (epa.gov)
  • Furthermore, new research into biopolymers may produce new bioplastic products from renewable resources that are biodegradable and easier on our environment. (howstuffworks.com)
  • Biopolymers are increasing in popularity in cosmetic science since they are natural and sustainable raw materials. (cosmeticsandtoiletries.com)
  • The quest for biodegradable, sustainable and renewable raw materials in the personal care industry will drive formulators to consider biopolymers as raw materials. (cosmeticsandtoiletries.com)
  • Chemical modification of biopolymers to obtain different properties/different shapes of materials. (vutbr.cz)
  • Here, we demonstrate through experiments and simulations that the rigidity and connectivity of filaments in active biopolymer networks regulates the anisotropy and the length scale of the underlying deformations, yielding materials with variable contractility. (pnas.org)
  • In this dissertation, jamming effects in highly packed systems are studied in two specific materials: glasses and biopolymers in cellular environments. (umd.edu)
  • Preference towards eco-friendly materials in packaging industries as well as textiles is the driving factor of the biopolymer coatings market. (sbwire.com)
  • During its life cycle, a biopolymer product isolate atmospheric CO 2 from plant or animal raw materials, and at the end of product life it will turn into compost, to provide the raw materials for the next generation of materials. (omicsonline.org)
  • With contributions from an international team of leading nanoscientists and materials researchers, this book draws together and reviews the most recent developments and techniques in biopolymer nano-composites. (ellibs.com)
  • NatureWorks is doing its part to grow the nonwovens industry by adding production capacity for its Ingeo biopolymer as well as produce new resins and lactides. (inda.org)
  • 5. The conjugate of claim 4 , wherein the biopolymer is hyaluronic acid. (google.com)
  • In this workshop, we propose to bring together researchers from a diverse discipline of physics, chemistry, molecular biology, and engineering to discuss topics central to the behavior of biopolymers driven through nanopores or confined in nanochannels. (cecam.org)
  • We report the controlled reversible and irreversible folding behavior of a biopolymer film simply by tuning the solvent characteristics. (rsc.org)
  • The pore size of biopolymer networks governs their mechanical properties and strongly impacts the behavior of embedded cells. (nih.gov)
  • Biopolymers represent the most abundant organic compounds in the biosphere and constitute the larges. (wiley-vch.de)
  • Many biopolymers spontaneously fold into characteristic compact shapes (see also " protein folding " as well as secondary structure and tertiary structure ), which determine their biological functions and depend in a complicated way on their primary structures. (wikipedia.org)
  • Catherine Picart's research focuses on the assembly of biopolymers, protein/lipid interactions, and musculo-skeletal tissue engineering. (wiley.com)
  • In conclusion, the versatile deposition of biopolymers by ES-IBD enables UHV based single molecule imaging techniques for a range of different samples, starting from imaging the sequence and characterizing 2D nanostructures of biomolecules by STM to 3D folded protein complexes imaged by LEEH. (epfl.ch)
  • Molecular-level protein-protein recognition is tailored specifically into tunable metal-binding biopolymers. (epa.gov)
  • Filamentous biopolymers in bacteria are involved in a variety of critical processes including templating cell growth, segregating genetic material and force production during motility and cell division. (upenn.edu)
  • The U.S. Army Engineer Research and Development Center- Environmental Laboratory (ERDC-EL) recently concluded the successful transfer of a proprietary industrial process for producing the salt of the biopolymer created from the natural bacteria, R. tropici. (federallabs.org)
  • In this report, the global Degradable Biopolymers market is valued at USD XX million in 2017 and is expected to reach USD XX million by the end of 2025, growing at a CAGR of XX% between 2017 and 2025. (reportsnreports.com)
  • In this paper a two-dimensional nonlinear elastic framework, incorporating both bending and stretching, for the behaviour of biopolymer filaments treated as one-dimensional continua is developed. (diva-portal.org)
  • Since the behaviour of individual filaments has a strong influence on the behaviour of networks of filaments the theory developed here can serve as a basis for analyzing the elasticity of networks such as actin and other filamentous biopolymer networks. (diva-portal.org)
  • The compostable biopolymers are broken down into carbon dioxide and water via microorganisms. (reference.com)
  • This book compiles chapters contributed by internationally renowned scholars working in biopolymer-based nanomaterials, offering a wide vision on the new and ongoing potential of different biopolymeric nanomaterials. (researchandmarkets.com)
  • Forces generated by molecular motors on biopolymers must underlie these dynamics, but how molecular-scale forces give rise to cellular-scale shape changes is unknown. (pnas.org)
  • In this work, using low-friction langevin dynamics simulations with explicit crowding particles, I examined the conformational change of biopolymers in the presence of crowders of various sizes and shapes. (umd.edu)
  • The dynamics of biopolymers in solution and in crowded molecular environments, which mimic some features of the interior of a biochemical cell, will be discussed. (aps.org)
  • Sarasota, FL -- ( SBWIRE ) -- 11/09/2016 -- The polymers that are extracted from nature, usually from the biological origin which are degradable in nature, are known as biopolymers. (sbwire.com)
  • The biopolymers (lactic acid, polyesters) are extracted from the bioreactors and chemically processed into plastics. (howstuffworks.com)
  • The structure, preparation, and flocculation activity of natural and chemically cationized plant biopolymers are presented. (springer.com)
  • Biopolymers are polymers synthesized within living organism. (omicsonline.org)
  • Interest in biopolymer nanocomposites is soaring. (ellibs.com)
  • Physico-chemical Properties of Nucleic Acids, Volume II basically deals with the structural studies on nucleic acids and other biopolymers. (elsevier.com)
  • The journal has three sections: Peptide Science (established in 1995, published bimonthly), Nucleic Acid Sciences (established in 1997, published four times per year), and Biospectroscopy (merged with Biopolymers in 2004). (wikipedia.org)
  • Matsuka, the founder of Biopolymers and Cell was a director of [Institute of Molecular Biology and Genetics]. (wikipedia.org)
  • Many methods have been developed to test and evaluate the mechanical properties of the biopolymer from castor oil employed in implants and osteo-repositions, among other things. (scielo.br)
  • Low oxygen and water vapour permeability, high flexibility, and rigid mechanical strength are some of the vital characteristics of the biopolymer coatings. (sbwire.com)
  • When Dr. Kenneth Hughes sees patients in his Los Angeles surgery center for evaluation, he always explains the multitude of complications that may occur in the removal of these silicone and biopolymer substances including fluid collections, infection, inadequate removal, fat death, skin death, tissue deformities, and tissue defects. (prlog.org)
  • The performance of either solvent in recovery of the dissolved biopolymers will help to understand overall solubility characteristics of the extracted cell wall material. (aiche.org)
  • Controlling the reversibility as well as the actuation time of the biopolymer film by tuning the solvent is explained in detail at the bulk scale by applying appropriate experimental techniques. (rsc.org)
  • Clean production methods, zero health issues and environmental risk, solvent less solution are some of the advantages of biopolymers along with high efficiency. (sbwire.com)
  • I want to get the latest chemistry news from C&EN in my inbox every week. (acs.org)
  • The current texts on surface chemistry generally devote a single chapter to the characteristics of spread monolayers of lipids and biopolymers on liquids, and a researcher may have to review several hundred references to determine the procedures needed to investigate or analyze a particular phenomenon. (dymocks.com.au)
  • Structural biology is the study of the structural properties of the biopolymers. (wikipedia.org)
  • In addition to these structural (and functional) complexities, an individual biopolymer is typically present at low concentration in samples that contain many similar and similarly complex compounds. (sigmaaldrich.com)
  • The biopolymer coatings market is poised to grow by $ 336.80 mn during 2020-2024 progressing at a CAGR of 6% during the forecast period. (researchandmarkets.com)
  • 7. The conjugate of claim 1 , wherein the biopolymer is selected from the group consisting of polyacrylic acid, poly-α-glutamic acid, poly-γ-glutamic acid, carrageenan, calcium alginate and sodium alginate. (google.com)
  • Biopolymer Congress shares an insight into the recent research and Polymer nanotechnology, which gains immense interest with the colossal and exuberant presence of adepts, young and brilliant researchers, business delegates and talented student communities. (internano.org)
  • Relation between extraction process and chemical/physical properties of biopolymers. (vutbr.cz)
  • Exopolysaccharides (EPSs) are high molecular weight carbohydrate biopolymers that are composed of sugar residues linked together through glycosidic bonds, and secreted by microorganisms into the surrounding environment with certain properties and functions. (aiche.org)
  • Despite its importance, the physical properties of callose and its interactions with other biopolymers within the cell wall matrix remain unknown. (nature.com)
  • The dielectric properties are characterized for two biopolymer thin films: a deoxyribonucleic acid (DNA)-based film and a bovine serum albumin (BSA)-based film. (spie.org)
  • The overall objective of this research is to develop high-affinity, nanoscale biopolymers with tunable properties for the selective removal of heavy metals such as cadmium, mercury and arsenic. (epa.gov)
  • The electrochemical and charge storage properties of different lignins inside biopolymer electrodes were studied and correlated with the chemical variations of the lignins as indicated from the nuclear magnetic resonance (NMR) spectroscopic data. (diva-portal.org)
  • Furthermore, there is an urgent need at this stage for a text that discusses the state of the art regarding the surface pheqomena exhibited by lipids and biopolymers, as they are relevant to a wide variety of surface and interfacial processes. (dymocks.com.au)
  • We show that biopolymers are inherently very sensitive to this coupling and that this could be exploited for regulation of a variety of processes such as the targeted exertion of forces, signaling, and self-assembly in response to geometric cues including the local mean and Gaussian curvatures. (upenn.edu)
  • This review describes how these biopolymers have been successfully incorporated into the internal and external aqueous phases of W/O/W emulsions to improve the stability and yield of model systems. (springer.com)
  • The osteoinductive surface modification comprises a biopolymer matrix coating that is seeded with periosteal cells that have been previously harvested either from the graft recipient or from an allogenic or xenogenic donor source. (google.com)
  • The good news is that more biopolymers are approaching commercial viability for a long list of familiar and unfamiliar objects. (treehugger.com)