Chlorophyll Binding Proteins: A large family of proteins that have been traditionally classified as the light-harvesting proteins of the photosynthetic reaction complex. Chlorophyll binding proteins are also found in non-photosynthetic settings where they may play a photoprotective role in response to light stress.Chlorophyll: Porphyrin derivatives containing magnesium that act to convert light energy in photosynthetic organisms.Light-Harvesting Protein Complexes: Complexes containing CHLOROPHYLL and other photosensitive molecules. They serve to capture energy in the form of PHOTONS and are generally found as components of the PHOTOSYSTEM I PROTEIN COMPLEX or the PHOTOSYSTEM II PROTEIN COMPLEX.Photosystem II Protein Complex: A large multisubunit protein complex found in the THYLAKOID MEMBRANE. It uses light energy derived from LIGHT-HARVESTING PROTEIN COMPLEXES to catalyze the splitting of WATER into DIOXYGEN and of reducing equivalents of HYDROGEN.Photosynthetic Reaction Center Complex Proteins: Protein complexes that take part in the process of PHOTOSYNTHESIS. They are located within the THYLAKOID MEMBRANES of plant CHLOROPLASTS and a variety of structures in more primitive organisms. There are two major complexes involved in the photosynthetic process called PHOTOSYSTEM I and PHOTOSYSTEM II.Chlorophyllides: Products of the hydrolysis of chlorophylls in which the phytic acid side chain has been removed and the carboxylic acids saponified.Photosynthesis: The synthesis by organisms of organic chemical compounds, especially carbohydrates, from carbon dioxide using energy obtained from light rather than from the oxidation of chemical compounds. Photosynthesis comprises two separate processes: the light reactions and the dark reactions. In higher plants; GREEN ALGAE; and CYANOBACTERIA; NADPH and ATP formed by the light reactions drive the dark reactions which result in the fixation of carbon dioxide. (from Oxford Dictionary of Biochemistry and Molecular Biology, 2001)Photosystem I Protein Complex: A large multisubunit protein complex that is found in the THYLAKOID MEMBRANE. It uses light energy derived from LIGHT-HARVESTING PROTEIN COMPLEXES to drive electron transfer reactions that result in either the reduction of NADP to NADPH or the transport of PROTONS across the membrane.Protochlorophyllide: A photo-active pigment localized in prolamellar bodies occurring within the proplastids of dark-grown bean leaves. In the process of photoconversion, the highly fluorescent protochlorophyllide is converted to chlorophyll.Light: That portion of the electromagnetic spectrum in the visible, ultraviolet, and infrared range.Poly(A)-Binding Proteins: Proteins that bind to the 3' polyadenylated region of MRNA. When complexed with RNA the proteins serve an array of functions such as stabilizing the 3' end of RNA, promoting poly(A) synthesis and stimulating mRNA translation.Chloroplasts: Plant cell inclusion bodies that contain the photosynthetic pigment CHLOROPHYLL, which is associated with the membrane of THYLAKOIDS. Chloroplasts occur in cells of leaves and young stems of plants. They are also found in some forms of PHYTOPLANKTON such as HAPTOPHYTA; DINOFLAGELLATES; DIATOMS; and CRYPTOPHYTA.Pigments, Biological: Any normal or abnormal coloring matter in PLANTS; ANIMALS or micro-organisms.Plant Leaves: Expanded structures, usually green, of vascular plants, characteristically consisting of a bladelike expansion attached to a stem, and functioning as the principal organ of photosynthesis and transpiration. (American Heritage Dictionary, 2d ed)Cyanobacteria: A phylum of oxygenic photosynthetic bacteria comprised of unicellular to multicellular bacteria possessing CHLOROPHYLL a and carrying out oxygenic PHOTOSYNTHESIS. Cyanobacteria are the only known organisms capable of fixing both CARBON DIOXIDE (in the presence of light) and NITROGEN. Cell morphology can include nitrogen-fixing heterocysts and/or resting cells called akinetes. Formerly called blue-green algae, cyanobacteria were traditionally treated as ALGAE.Thylakoids: Membranous cisternae of the CHLOROPLAST containing photosynthetic pigments, reaction centers, and the electron-transport chain. Each thylakoid consists of a flattened sac of membrane enclosing a narrow intra-thylakoid space (Lackie and Dow, Dictionary of Cell Biology, 2nd ed). Individual thylakoids are interconnected and tend to stack to form aggregates called grana. They are found in cyanobacteria and all plants.Molecular Sequence Data: 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.Pheophytins: Chlorophylls from which the magnesium has been removed by treatment with weak acid.Carrier Proteins: Transport proteins that carry specific substances in the blood or across cell membranes.Plant Proteins: Proteins found in plants (flowers, herbs, shrubs, trees, etc.). The concept does not include proteins found in vegetables for which VEGETABLE PROTEINS is available.Fluorescence: The property of emitting radiation while being irradiated. The radiation emitted is usually of longer wavelength than that incident or absorbed, e.g., a substance can be irradiated with invisible radiation and emit visible light. X-ray fluorescence is used in diagnosis.Amino Acid Sequence: 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.Darkness: The absence of light.Synechocystis: A form-genus of unicellular CYANOBACTERIA in the order Chroococcales. None of the strains fix NITROGEN, there are no gas vacuoles, and sheath layers are never produced.Carotenoids: The general name for a group of fat-soluble pigments found in green, yellow, and leafy vegetables, and yellow fruits. They are aliphatic hydrocarbons consisting of a polyisoprene backbone.Protein Binding: The process in which substances, either endogenous or exogenous, bind to proteins, peptides, enzymes, protein precursors, or allied compounds. Specific protein-binding measures are often used as assays in diagnostic assessments.Hordeum: A plant genus of the family POACEAE. The EDIBLE GRAIN, barley, is widely used as food.Tetrapyrroles: Four PYRROLES joined by one-carbon units linking position 2 of one to position 5 of the next. The conjugated bond system results in PIGMENTATION.Tacrolimus Binding Proteins: A family of immunophilin proteins that bind to the immunosuppressive drugs TACROLIMUS (also known as FK506) and SIROLIMUS. EC 5.2.1.-Spinacia oleracea: A widely cultivated plant, native to Asia, having succulent, edible leaves eaten as a vegetable. (From American Heritage Dictionary, 1982)PhytolArabidopsis: A plant genus of the family BRASSICACEAE that contains ARABIDOPSIS PROTEINS and MADS DOMAIN PROTEINS. The species A. thaliana is used for experiments in classical plant genetics as well as molecular genetic studies in plant physiology, biochemistry, and development.Plants: Multicellular, eukaryotic life forms of kingdom Plantae (sensu lato), comprising the VIRIDIPLANTAE; RHODOPHYTA; and GLAUCOPHYTA; all of which acquired chloroplasts by direct endosymbiosis of CYANOBACTERIA. They are characterized by a mainly photosynthetic mode of nutrition; essentially unlimited growth at localized regions of cell divisions (MERISTEMS); cellulose within cells providing rigidity; the absence of organs of locomotion; absence of nervous and sensory systems; and an alternation of haploid and diploid generations.Poly(A)-Binding Protein I: A poly(A) binding protein that has a variety of functions such as mRNA stabilization and protection of RNA from nuclease activity. Although poly(A) binding protein I is considered a major cytoplasmic RNA-binding protein it is also found in the CELL NUCLEUS and may be involved in transport of mRNP particles.Base Sequence: The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence.Energy Transfer: The transfer of energy of a given form among different scales of motion. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed). It includes the transfer of kinetic energy and the transfer of chemical energy. The transfer of chemical energy from one molecule to another depends on proximity of molecules so it is often used as in techniques to measure distance such as the use of FORSTER RESONANCE ENERGY TRANSFER.Plastoquinone: Polyunsaturated side-chain quinone derivative which is an important link in the electron transport chain of green plants during the photosynthetic conversion of light energy by photophosphorylation into the potential energy of chemical bonds.Native Polyacrylamide Gel Electrophoresis: Polyacrylamide gel electrophoresis under conditions in which the components, such as PROTEINS, being separated can remain in their naturally folded state.Bacteriochlorophylls: Pyrrole containing pigments found in photosynthetic bacteria.Bacteriochlorophyll A: A specific bacteriochlorophyll that is similar in structure to chlorophyll a.Chlorobium: A genus of phototrophic, obligately anaerobic bacteria in the family Chlorobiaceae. They are found in hydrogen sulfide-containing mud and water environments.Chlorobi: A phylum of anoxygenic, phototrophic bacteria including the family Chlorobiaceae. They occur in aquatic sediments, sulfur springs, and hot springs and utilize reduced sulfur compounds instead of oxygen.Chondrus: A genus of RED ALGAE, in the family Gigartinaceae. The species Chondrus crispus is a source of CARRAGEENAN.Phaeophyta: A division of predominantly marine EUKARYOTA, commonly known as brown algae, having CHROMATOPHORES containing carotenoid PIGMENTS, BIOLOGICAL. ALGINATES and phlorotannins occur widely in all major orders. They are considered the most highly evolved algae because of their well-developed multicellular organization and structural complexity.Diatoms: The common name for the phylum of microscopic unicellular STRAMENOPILES. Most are aquatic, being found in fresh, brackish, and salt water. Diatoms are noted for the symmetry and sculpturing of their siliceous cell walls. They account for 40% of PHYTOPLANKTON, but not all diatoms are planktonic.Phycodnaviridae: A family of DNA plant viruses that infect eukaryotic algae.Rhodophyta: Plants of the division Rhodophyta, commonly known as red algae, in which the red pigment (PHYCOERYTHRIN) predominates. However, if this pigment is destroyed, the algae can appear purple, brown, green, or yellow. Two important substances found in the cell walls of red algae are AGAR and CARRAGEENAN. Some rhodophyta are notable SEAWEED (macroalgae).Ribulose-Bisphosphate Carboxylase: A carboxy-lyase that plays a key role in photosynthetic carbon assimilation in the CALVIN-BENSON CYCLE by catalyzing the formation of 3-phosphoglycerate from ribulose 1,5-biphosphate and CARBON DIOXIDE. It can also utilize OXYGEN as a substrate to catalyze the synthesis of 2-phosphoglycolate and 3-phosphoglycerate in a process referred to as photorespiration.Echinops Plant: A plant genus of the family ASTERACEAE. Members contain a pseudoguaiane sesquiterpene. San-fang-feng is the root of E. grijisii used in DRUGS, CHINESE HERBAL.Fructans: Polysaccharides composed of D-fructose units.Complement C4b-Binding Protein: A serum protein that regulates the CLASSICAL COMPLEMENT ACTIVATION PATHWAY. It binds as a cofactor to COMPLEMENT FACTOR I which then hydrolyzes the COMPLEMENT C4B in the CLASSICAL PATHWAY C3 CONVERTASE (C4bC2a).Mesophyll Cells: Large and highly vacuolated cells possessing many chloroplasts occuring in the interior cross-section of leaves, juxtaposed between the epidermal layers.Complement Inactivator Proteins: Serum proteins that negatively regulate the cascade process of COMPLEMENT ACTIVATION. Uncontrolled complement activation and resulting cell lysis is potentially dangerous for the host. The complement system is tightly regulated by inactivators that accelerate the decay of intermediates and certain cell surface receptors.

Spectroscopic and molecular characterization of a long wavelength absorbing antenna of Ostreobium sp. (1/69)

One of the strains of the marine green alga Ostreobium sp. possesses an exceptionally large number of long wavelength absorbing chlorophylls (P. Haldall, Biol. Bull. 134, 1968, 411-424) as evident from a distinct shoulder in the absorption spectrum at around 710 nm while in the other strain this shoulder is absent. Therefore, Ostreobium offers a unique possibility to explore the origin of these red-shifted chlorophylls, because strains with and without these spectral forms can be compared. Here, we characterize these red forms spectroscopically by absorption, fluorescence and CD spectroscopy. In the CD spectra at least three spectroscopic red forms are identified which lead to an unusual room temperature fluorescence spectrum that peaks at 715 nm. The gel electrophoretic pattern from thylakoids of Ostreobium sp. shows an intense band at 22 kDa which correlates with the presence or absence of long wavelength absorbing pigments. By protein sequencing of the N-terminus of the 22-kDa polypeptide and sequence alignments, this was identified as an Lhca1-type light-harvesting complex. The abundance of this polypeptide - and a possibly co-migrating one - in Ostreobium sp. indicates an antenna size of approximately 340 chlorophyll molecules (Chl a and Chl b) per PS IIalpha reaction center, which is significantly larger than in higher plants ( approximately 240). The red forms are more abundant in the interior of the thalli where a 'shade-light' light field is expected than in the white-light exposed surface. This demonstrates that algae exist which may be able to up-regulate the synthesis of large amounts of LHCI and associated red forms under appropriate illumination conditions.  (+info)

Supramolecular organization of photosystem II and its light-harvesting antenna in partially solubilized photosystem II membranes. (2/69)

We present an extended analysis of the organization of green plant photosystem II and its associated light-harvesting antenna using electron microscopy and image analysis. The analysis is based on a large dataset of 16 600 projections of negatively stained PSII-LHCII supercomplexes and megacomplexes prepared by means of three different pretreatments. In addition to our previous work on this system [Boekema, E.J., van Roon, H., Calkoen, F., Bassi, R. and Dekker, J.P. (1999) Biochemistry 38, 2233-2239], the following results were obtained. The rotational orientation of trimeric LHCII at the S, M and L binding positions was determined. It was found that compared to the S trimer, the M and L trimers are rotationally shifted by about -20 degrees and -50 degrees, respectively. The number of projections with empty CP29, CP26 and CP24 binding sites was found to be about 0, 18 and 4%, respectively. We suggest that CP26 and CP24 are not required for the binding of trimeric LHCII at any of the three binding positions. A new type of megacomplex was observed with a characteristic windmill-like shape. This type III megacomplex consists of two C2S2 supercomplexes connected at their CP26 tips. Structural variation in the region of the central dimeric photosystem II complex was found to occur at one specific position near the periphery of the complex. We attribute this variation to the partial absence of an extrinsic polypeptide or one or more small intrinsic membrane proteins.  (+info)

Ultrafast excitation dynamics of low energy pigments in reconstituted peripheral light-harvesting complexes of photosystem I. (3/69)

Ultrafast dynamics of a reconstituted Lhca4 subunit from the peripheral LHCI-730 antenna of photosystem I of higher plants were probed by femtosecond absorption spectroscopy at 77 K. Intramonomeric energy transfer from chlorophyll (Chl) b to Chl a and energy equilibration between Chl a molecules observed on the subpicosecond time scale are largely similar to subpicosecond energy equilibration processes within LHCII monomers. However, a 5 ps equilibration process in Lhca4 involves unique low energy Chls in LHCI absorbing at 705 nm. These pigments localize the excitation both in the Lhca4 subunit and in LHCI-730 heterodimers. An additional 30-50 ps equilibration process involving red pigments of Lhca4 in the heterodimer, observed by transient absorption and picosecond fluorescence spectroscopy, was ascribed to intersubunit energy transfer.  (+info)

A potential role of chlorophylls b and c in assembly of light-harvesting complexes. (4/69)

Chlorophyll (Chl)-containing light-harvesting complexes (LHCs) in chloroplasts of plant and algal cells usually include an oxidized Chl (Chl b or c) in addition to Chl a. Oxidation of peripheral groups on the tetrapyrrole structure increases the Lewis acid strength of the central Mg atom. We propose that the resulting stronger coordination bonds between oxidized Chls and ligands in LHC apoproteins (LHCPs) stabilize the initial intermediates and thus promote assembly of LHCs within the chloroplast envelope.  (+info)

Antisense inhibition of the photosynthetic antenna proteins CP29 and CP26: implications for the mechanism of protective energy dissipation. (5/69)

The specific roles of the chlorophyll a/b binding proteins CP29 and CP26 in light harvesting and energy dissipation within the photosynthetic apparatus have been investigated. Arabidopsis was transformed with antisense constructs against the genes encoding the CP29 or CP26 apoprotein, which gave rise to several transgenic lines with remarkably low amounts of the antisense target proteins. The decrease in the level of CP24 protein in the CP29 antisense lines indicates a physical interaction between these complexes. Analysis of chlorophyll fluorescence showed that removal of the proteins affected photosystem II function, probably as a result of changes in the organization of the light-harvesting antenna. However, whole plant measurements showed that overall photosynthetic rates were similar to those in the wild type. Both antisense lines were capable of the qE type of nonphotochemical fluorescence quenching, although there were minor changes in the capacity for quenching and in its induction kinetics. High-light-induced violaxanthin deepoxidation to zeaxanthin was not affected, although the pool size of these pigments was decreased slightly. We conclude that CP29 and CP26 are unlikely to be sites for nonphotochemical quenching.  (+info)

The properties of the chlorophyll a/b-binding proteins Lhca2 and Lhca3 studied in vivo using antisense inhibition. (6/69)

The specific functions of the light-harvesting proteins Lhca2 and Lhca3 were studied in Arabidopsis ecotype Colombia antisense plants in which the proteins were individually repressed. The antisense effect was specific in each plant, but levels of Lhca proteins other than the targeted products were also affected. The contents of Lhca1 and Lhca4 were unaffected, but Lhca3 (in Lhca2-repressed plants) was almost completely depleted, and Lhca2 decreased to about 30% of wild-type levels in Lhca3-repressed plants. This suggests that the Lhca2 and Lhca3 proteins are in physical contact with each other and that they require each other for stability. Photosystem I fluorescence at 730 nm is thought to emanate from pigments bound to Lhca1 and Lhca4. However, fluorescence emission and excitation spectra suggest that Lhca2 and Lhca3, which fluoresce in vitro at 680 nm, also could contribute to far-red fluorescence in vivo. Spectral forms with absorption maxima at 695 and 715 nm, apparently with emission maxima at 702 and 735 nm, respectively, might be associated with Lhca2 and Lhca3.  (+info)

Biochemical properties of the PsbS subunit of photosystem II either purified from chloroplast or recombinant. (7/69)

The biochemical properties of PsbS protein, a nuclear-encoded Photosystem II subunit involved in the high energy quenching of chlorophyll fluorescence, have been studied using preparations purified from chloroplasts or obtained by overexpression in bacteria. Despite the homology with chlorophyll a/b/xanthophyll-binding proteins of the Lhc family, native PsbS protein does not show any detectable ability to bind chlorophylls or carotenoids in conditions in which Lhc proteins maintain full pigment binding. The recombinant protein, when refolded in vitro in the presence of purified pigments, neither binds chlorophylls nor xanthophylls, differently from the homologous proteins LHCII, CP26, and CP29 that refold into stable pigment-binding complexes. Thus, it is concluded that if PsbS is a pigment-binding protein in vivo, the binding mechanism must be different from that present in other Lhc proteins. Primary sequence analysis provides evidence for homology of PsbS helices I and III with the central 2-fold symmetric core of chlorophyll a/b-binding proteins. Moreover, a structural homology owed to the presence of acidic residues in each of the two lumen-exposed loops is found with the dicyclohexylcarbodiimide/Ca(2+)-binding domain of CP29. Consistently, both native and recombinant PsbS proteins showed [(14)C]dicyclohexylcarbodiimide binding, thus supporting a functional basis for its homology with CP29 on the lumen-exposed loops. This domain is suggested to be involved in sensing low luminal pH.  (+info)

Mutation analysis of Lhca1 antenna complex. Low energy absorption forms originate from pigment-pigment interactions. (8/69)

The light harvesting complex Lhca1, one of the four gene products comprising the photosystem I antenna system, has been analyzed by site-directed mutagenesis with the aim of determining the chromophore(s) responsible for its long wavelength chlorophyll spectral form, a specific characteristic of the LHCI antenna complex. A family of mutant proteins, each carrying a mutation at a single chlorophyll-binding residue, was obtained and characterized by biochemical and spectroscopic methods. A map of the chromophores bound to each of the 10 chlorophyll-binding sites was drawn, and the energy levels of the Q(y) transition were determined in most cases. When compared with Lhcb proteins previously analyzed, Lhca1 is characterized by stronger interactions between individual chromophores as detected by both biochemical and spectroscopic methods; most mutations, although targeted to a single residue, lead to the loss of more than one chromophore and of conservative CD signals typical of chlorophyll-chlorophyll interactions. The lower energy absorption form (686 nm at 100K, 688 nm at room temperature), which is responsible for the red-shifted emission components at 690 and 701 nm, typical of Lhca1, is associated with a chlorophyll a/chlorophyll a excitonic interaction originating from a pigment cluster localized in the protein domain situated between helix C and the helix A/helix B cross. This cluster includes chlorophylls bound to sites A5-B5-B6 and a xanthophyll bound to site L2.  (+info)

*Symbiodinium

"Isolation and Characterization of Three Membrane-Bound Chlorophyll-Protein Complexes from Four Dinoflagellate Species". ... a-protein complex (PCP), and a membrane-bound chl. a-chl. c2-peridinin- protein complex (acpPC), along with typical ... Response of chlorophyll-protein complexes to different photon-flux densities". Marine Biology. 130 (1): 23-33. doi:10.1007/ ... "Apoprotein Composition and Spectroscopic Characterization of the Water-Soluble Peridinin-Chlorophyll a-Proteins from Three ...

*Iron-starvation-induced protein A

It belongs to the chlorophyll-a/b-binding family of proteins, and has been shown to have a photoprotection role in preventing ... "The chlorophyll-binding protein IsiA is inducible by high light and protects the cyanobacterium Synechocystis PCC6803 from ... "Aggregates of the Chlorophyll-Binding Protein IsiA (CP43') Dissipate Energy in Cyanobacteria†". Biochemistry. 44 (32): 10846- ... "Supramolecular Organization and Dual Function of the IsiA Chlorophyll-Binding Protein in Cyanobacteria†". Biochemistry. 43 (32 ...

*Photosystem II light-harvesting protein

This family also includes the iron-stress induced chlorophyll-binding protein CP43' (IsiA,CP43'), which evolved in ... "Supramolecular organization and dual function of the IsiA chlorophyll-binding protein in cyanobacteria". Biochemistry. 43 (32 ... These polypeptides bind to chlorophyll a and beta-carotene and pass the excitation energy on to the reaction centre. ... Photosystem II protein PsbC InterPro: IPR005869 Barber J (August 2002). "Photosystem II: a multisubunit membrane protein that ...

*Biological pigment

While carotenoids can be found complexed within chlorophyll-binding proteins such as the photosynthetic reaction centers and ... chlorophyll a and chlorophyll b. Kelps, diatoms, and other photosynthetic heterokonts contain chlorophyll c instead of b, while ... Chlorophylls degrade into colorless tetrapyrroles known as nonfluorescent chlorophyll catabolites (NCCs). As the predominant ... A possible role for tryptophan in the bathochromic spectral shift of protein-bound astaxanthin. N.p., n.d. Web. 25 May 2010. ...

*Protochlorophyllide

Chlorophyll itself is bound to proteins and can transfer the absorbed energy in the required direction. Protochlorophyllide, ... It is currently not known which other proteins interact through this linker. The regulatory protein is a transmembrane protein ... Flu (first described in ) is a nuclear-encoded, chloroplast-located protein that appears containing only protein-protein ... The FLP proteins act as regulators of chlorophyll synthesis in response to light and plastid signals in Chlamydomonas. Genes & ...

*Photoprotection

Another unique, albeit poorly-understood, cyanobacterial strategy involves the IsiA chlorophyll-binding protein, which can ... Mechanisms may also act on a longer time-scale, such as up-regulation of stress response proteins or down-regulation of pigment ... For example, most cyanobacteria possess an Orange Carotenoid Protein (OCP), which serves as a novel form of non-photochemical ... doi:10.1111/j.175-1097.2008.00453.x. Kirilovsky, Diana; Kerfeld, Cheryl A. (2013). "The Orange Carotenoid Protein: a blue-green ...

*Peridinin-chlorophyll-protein complex

... is a soluble molecular complex consisting of the peridinin-chlorophyll a-protein bound to peridinin, chlorophyll, and lipids. ... "The Unique Photophysical Properties of the Peridinin-Chlorophyll-a-Protein". Current Protein & Peptide Science. 15 (4): 332-350 ... Each eight-helix segment typically binds four peridinin molecules, one chlorophyll a molecule, and one lipid molecule such as ... The peridinin-chlorophyll-protein complex (PCP or PerCP) ... "Characterization of the peridinin-chlorophyll a-protein complex ...

*Light-harvesting complexes of green plants

The N-terminus of the chlorophyll A-B binding protein extends into the stroma where it is involved with adhesion of granal ... Andersson B, Yang DH, Paulsen H (2000). "The N-terminal domain of the light-harvesting chlorophyll a/b-binding protein complex ... Under changing light conditions, the reversible phosphorylation of light harvesting chlorophyll a/b binding proteins (LHCII) ... The light-harvesting complex (or antenna complex) is an array of protein and chlorophyll molecules embedded in the thylakoid ...

*Photosynthetic state transition

... plants and green algae use an intrinsically-bound membrane complex of chlorophyll a/b binding proteins for their antenna, ...

*TOC1 (gene)

... chlorophyll-a,b binding protein-see Light-harvesting complexes of green plants) in Arabidopsis. By measuring bioluminescence ... In the highly phosphorylated state, TOC1 has a higher binding affinity to the F-box protein ZEITLUPE (ZTL). In addition to ... The binding pattern of TOC1's CCT domain exhibits circadian oscillations, with maximum binding to G-box and EE motifs-promoter ... TOC1 protein has been found to be stabilized and TOC1 cycling largely eliminated. While phosphorylation of TOC1 protein ...

*Circadian Clock Associated 1

... lab was studying promoter fragments that contribute to light regulation of light-harvesting Chlorophyll A/B Binding Protein ( ... The protein motif CCA1 uses to bind to its target DNA sequences is its Myb-like domain. CCA1 only has one Myb domain, whereas ... CCA1 acts to suppress the expression of the DNA sequence it binds to. The stability of CCA1 protein is not affected by light or ... This DNA-binding activity was designated as CA-1 because the binding is mostly to cytosine and adenine-rich sequences. They ...

*Precorrin-8X methylmutase

... and hydrogenobyrinic acid-binding protein. This enzyme participates in porphyrin and chlorophyll metabolism. As of late 2007, 6 ...

*Prochloron

... cyanobacteria that contain both chlorophyll a and b bound to a special light-harvesting protein. The only taxonomically valid ... "Independent evolution of the prochlorophyte and green plant chlorophyll a/b light-harvesting proteins". Proc. Natl. Acad. Sci. ...

*Crocosphaera watsonii

The D1 protein forms the reaction center of photosystem II and is important as it binds chlorophyll. By mutating and thus ... Instead, Crocosphaera watsonii uses pstS, a protein that has a high affinity to bind to phosphorus. During times of phosphorus ... These include genes encoding the proteins nifH, nifX, glutamate synthetase, ntcA, glnB-like proteins and glgP, all of which ... Furthermore, genes encoding for photosynthetic proteins such as photosystem I subunit VII (psaC), the photosystem II D1 protein ...

*Chlorophyll

... itself is bound to proteins and can transfer the absorbed energy in the required direction. Protochlorophyllide ... Two types of chlorophyll exist in the photosystems of green plants: chlorophyll a and b. Chlorophyll was first isolated and ... Play media The chlorophyll maps show milligrams of chlorophyll per cubic meter of seawater each month. Places where chlorophyll ... Bacteriochlorophyll, related compounds in phototrophic bacteria Chlorophyll a, an essential chlorophyll pigment Chlorophyll b, ...

*Cytochrome b559

Within the core of the complex, the chlorophyll and beta-carotene pigments are mainly bound to the antenna proteins CP43 (PsbC ... which pass the excitation energy on to chlorophylls in the reaction centre proteins D1 (Qb, PsbA) and D2 (Qa, PsbD) that bind ... Although cytochrome b559 is a redox-active protein, it is unlikely to be involved in the primary electron transport in PSII due ... PSII is a multisubunit protein-pigment complex containing polypeptides both intrinsic and extrinsic to the photosynthetic ...

*Ycf9 protein domain

Within the core of the complex, the chlorophyll and beta-carotene pigments are mainly bound to the antenna proteins CP43 (PsbC ... PSII is a multisubunit protein-pigment complex containing polypeptides bound to the photosynthetic membrane. ... In molecular biology, the PsbZ (Ycf9) is a protein domain, which is low in molecular weight. It is a transmembrane protein and ... and CP47 (PsbB), which pass the excitation energy on to the reaction centre proteins D1 (Qb, PsbA) and D2 (Qa, PsbD) that bind ...

*Herbicide

They bind to the Qb site on the D1 protein, and prevent quinone from binding to this site. Therefore, this group of compounds ... If this happens, the plants turn white due to complete loss of chlorophyll, and the plants die. Mesotrione and sulcotrione are ... ability of the herbicide to bind to its target protein. The effect usually relates to an enzyme with a crucial function in a ... The term target-site cross-resistance is used when the herbicides bind to the same target site, whereas non-target-site cross- ...

*Phycobiliprotein

... s are formed of a complex between proteins and covalently bound phycobilins that act as chromophores (the light ... which is then passed on to chlorophylls during photosynthesis. ... Phycobiliproteins are water-soluble proteins present in ...

*Phycoerythrin

Like all phycobiliproteins, it is composed of a protein part covalently binding chromophores called phycobilins. In the ... The light energy is captured by phycoerythrin and is then passed on to the reaction centre chlorophyll pair, most of the time ... The β chain always binds to three molecules. The small γ chain binds to none. Two molecules of N-methyl asparagine are bound to ... Image created with RasTop (Molecular Visualization Software). "Protein Data Bank". RCSB Protein Data Bank (PDB). Retrieved 12 ...

*Coproporphyrinogen III oxidase

The protein is a homodimer containing two internally bound iron atoms per molecule of native protein. The enzyme is active in ... it catalyses the oxidative decarboxylation of coproporphyrinogen III to proto-porphyrinogen IX in the haem and chlorophyll ... After proteolytic processing, the protein is present as a mature form of a homodimer with a molecular mass of 37 kDa. ...

*Hexazinone

... binds to a protein of the photosystem II complex, which blocks the electron transport. The result are multiple ... First triplet-state chlorophyll reacts with oxygen to form singlet oxygen. Both chlorophyll and singlet oxygen then remove ... Triazines like hexazinone can bind to the D-1 quinone protein of the electron transport chain in photosystem II to inhibit the ... This will result in a loss of chlorophyll, leakage of cellular contents, cell death, and eventually death of the plant. Woody ...

*Alpha solenoid

... for a somewhat different and more compact structure exemplified by the peridinin-chlorophyll binding protein. Alpha solenoid ... extended protein-protein interaction surfaces or to form deep concave areas for binding globular proteins. Because they are ... and in regulatory proteins that form extensive protein-protein interactions with their binding partners. Examples of alpha ... The protein-protein interaction capacity of alpha solenoid proteins also makes them well suited to function as regulatory ...

*Photosynthetic reaction centre

... give rise to electron transfer reactions along the path of a series of protein-bound co-factors. These co-factors are light- ... The pair of chlorophyll molecules at the reaction center are often referred to as P680. When the photon has been absorbed, the ... The tightly bound molecule is shown above the phaeophytin molecule and is coloured red. The loosely bound molecule is to the ... Protein Data Bank. URL accessed on February 28, 2010. Kimberley A. McGrath et al. (1999). World of biology ISBN 0-7876-3044-6 ...

*Potato virus Y

Non-specific binding to the plates is reduced through the use of buffers containing proteins such as casein and non-ionic ... lower chlorophyll levels and differential activity of soluble and ionically-bound peroxidases were detected. At later stages of ... P3 Protein), 6K1 (6-kDa Protein 1), CI (Cylindrical Inclusion), 6K2 (6-kDa Protein 2), VPg (Viral Protein genome-linked), ... Nonspecifically bound components are less strongly bound than the specific bound ones. Detection is achieved either through the ...

*Shiladitya DasSarma

... a mammalian-type single-stranded DNA-binding protein, in a halophilic archaeon". Applied Microbiology and Biotechnology. 98: ... DasSarma proposed that retinal pigments originally discovered in halophilic Archaea may have predated chlorophyll pigments in ... NRC-1. This work showed that certain proteins are highly acidic, providing an understanding of how proteins function in high ... Later in the 2000's, post-genomic research in his laboratory established signature proteins in halophilic Archaea, and the ...
Principal nameLHCB4 antibodyAlternative names for LHCB4 antibodyChlorophyll a-b binding protein CP29, Lhcbm4SwissProt IDP27497 (Maize),…
Quantum mechanics/molecular mechanics (QM/MM) calculations were employed so as to determine the most stable structures of protonated forms of Pheophytin-a (Pheo) dianion in DMF. The protonated forms include PheoH and PheoH(2). Electrostatic potential-derived charges (ESP charges) employing the CHelpG scheme were obtained for Pheo(2-) and for possible blue and red forms of PheoH(-) by ROB3LYP methodology using 6-31 G(d) basis. The ESP charges and the most stable structures obtained by QM/MM calculations provide a clue to the probable site of protonation in Pheo(2-) and PheoH(-). A total of 18 different possible structures were investigated. From these calculations, we identify the structures of the blue and red forms of PheoH and PheoH(2). Furthermore, density functional treatment (DFT) along with dielectric ;polarizable continuum model (DPCM) calculations using 6-311+G(2d,2p) basis were done to determine the absolute free energy of reduction of Pheo to PheoH and PheoH2 in DMF. The calculated ...
Photosystem I light harvesting complex gene 5; The light-harvesting complex (LHC) functions as a light receptor, it captures and delivers excitation energy to photosystems with which it is closely associated (PubMed-15563470, PubMed-21806943). Seems involved in the function of the photosystem I in low light conditions, when other LHCA proteins are less abundant (PubMed-15356385). Required, together with LHCA6, for the formation of a full-size NAD(P)H dehydrogenase- photosystem I supercomplex (NDH-PSI) that triggers cyclic and chlororespiratory electron transport in chloroplast thylakoi [...] (256 aa ...
It is normally a blue-black solid. It can be red but the red form is more unstable. It burns in air with a green flame to make tin(IV) oxide. It is a reducing agent. It is rarer than tin(IV) oxide. It dissolves in acids to make a colorless solution. ...
2. If this is your first time logging on you will find your initial password at the top of your reporting form otherwise use your established password. 2. For qualitative results do not enter anything in the result fields other than the numeric codes listed on the forms. Characters such as "+ - n p pos neg" will not be recognized and results will not be processed.. 3. Most method codes do not have to be entered if we have your codes on file from the previous reporting period. If you did not submit results for the previous shipment then you will have to reenter your method codes. Please see the "Method Data Sheet" for the codes we have on file for your lab.. 4. Please enter the less than (,) and greater than (,) signs when necessary in the result field along with your lowest or highest reportable range.. 5. Decimal points should be entered in the same place shown on the red reporting form. For example: If the field for reporting results on the red form has a box, a decimal point and three more ...
The researchers discovered that the low-oxygen conditions activate a transcription factor called hypoxia-inducible factor 1alpha. This factor is sufficient to drive mouse embryonic stem cells to rely exclusively on glucose metabolism for their energy. The next challenge is to reveal whether the metabolic switch is deterministic for the fate of these stem cells, in normal as well as in cancer development ...
New research from the Weizmann Institute of Science published in Cell Reports and recently reported in The Times of Israel, indicates that oxygen starvation could toughen up immune T cells for cancer immunotherapy.. So it is not just mountain climbers and endurance athletes that can benefit from altitude training by learning to perform well under low-oxygen conditions. These cancer-fighting cells of the immune system can also improve their performance through a cellular version of such a regimen.. Harnessing the immune system to battle malignancy - an approach known as cancer immunotherapy - has already started saving the lives of cancer patients in the past few years. In one major version of this approach, killer T cells are removed from the patients blood, grown in a laboratory dish and adapted to identifying and destroying cancerous cells; they are then returned to the patients bloodstream. This method has so far worked best against certain leukemias and lymphomas, but not against solid ...
A method and system are provided for testing antenna systems using position determination, orientation determination, test pattern analysis using a variety of factors and equipment including positions and orientation of antenna(s) under test at specific points and signal processing systems.
gbrumfiel writes The Large Hadron Collider is just getting ready for its next big science run. One thing researchers hope it will find is evidence for supersymmetry, a theory that could help to unify fundamental forces and explain mysterious dark matter. But as Nature reports this week, the LHC has...
If a patient is having a LHC with coronary angio and LV gram, would you code any different than 93458/26 for a hand injected LV gram to conserve contr
The chlorophyll-binding subunits of photosystems I and II are internal antenna light-harvesting proteins of oxygenic photosynthesis. The antenna proteins that exist in phycobilisomes in cyanobacteria and light-harvesting chlorophyll protein complexes in green plants act as peripheral antenna systems, enabling more efficient absorption of light energy ...
The principal mineral reds owe their colour to oxides of iron and to compounds of mercury. The reds due to iron are closely allied to the yellow ochres and other ferruginous pigments. As already explained in connexion with these yellows, tints passing through orange to deep purple reds are obtained by calcination of yellow hydrated ferric oxide, and in this way a great variety of ruddy and red tints are prepared. The proportion of ferric oxide in these compounds ranges from pure oxide to combinations in natural ochres containing not more than 2 or 3 per cent, of iron. Rouge or Mars Red, Crocus, Indian Red, and Turkey Red are all pure ferric oxide, varying in depth of tint from having undergone different degrees of calcination, or from being made from different artificial or natural sources. The other iron reds are all of the nature of ochres some of them, such as Venetian Red, being artificial compounds. These reds form exceedingly useful durable colours which do not injuri-ously affect the ...
An extendable and retractable antenna installed on a body housing of a portable radio apparatus includes a helical antenna having an antenna cap protruding from a top portion of the body housing, a helical winding disposed within the antenna cap, a rod antenna extending through the antenna cap, and a feeder disposed at a bottom portion of the helical antenna. The helical antenna is operated when the antenna is retracted. The rod antenna is insulated from the helical antenna when retracted, and passes through the helical antenna to protrude from the body housing when extended. The feeder operates the rod antenna when the rod antenna is extended and operates the helical antenna when the rod antenna is retracted.
PubMed comprises more than 30 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
Overcome wireless concerns such as coverage and capacity with the right system (DAS) products and correct placement within your building.
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AAP - Automated Antenna Positioning. Looking for abbreviations of AAP? It is Automated Antenna Positioning. Automated Antenna Positioning listed as AAP
MILLITECH PROPOSES TO DESIGN A COMPACT OFFSET CASSEGRAIN ANTENNA SYSTEM TO BE USED AT A WAVELENGTH OF 8 MM FOR CLOUD RESEARCH. THE SYSTEM WILL BE DESIGNED TO GIVE THE LOWSIDELOBE LEVELS CHARACTERISTIC OF AN OFFSET REFLECTOR WHILE GIVING POLARIZATION ISOLATION BETTER THAN 20 DB. THE TRADE-OFF BETWEEN HIGH POLARIZATION ISOLATION AND COMPACT SIZE WILL BE RESOLVED BY USING A GAUSSIAN OPTICS LENS ANTEN .... ...
MILLITECH PROPOSES TO DESIGN A COMPACT OFFSET CASSEGRAIN ANTENNA SYSTEM TO BE USED AT A WAVELENGTH OF 8 MM FOR CLOUD RESEARCH. THE SYSTEM WILL BE DESIGNED TO GIVE THE LOWSIDELOBE LEVELS CHARACTERISTIC OF AN OFFSET REFLECTOR WHILE GIVING POLARIZATION ISOLATION BETTER THAN 20 DB. THE TRADE-OFF BETWEEN HIGH POLARIZATION ISOLATION AND COMPACT SIZE WILL BE RESOLVED BY USING A GAUSSIAN OPTICS LENS ANTEN .... ...
Research has shown that some bacteria, including P. aeruginosa, have evolved different strategies to respond to and cope with the low-oxygen conditions in biofilms. Communities of bacteria can, for example, change the overall structure of the biofilm so that its surface area-to-volume ratio is higher and a larger proportion of the cells inside are able to access the oxygen on the outside. P. aeruginosa can also make molecules called phenazines, which help to shuttle electrons from the inside to the outside of the cell and ultimately to oxygen available at a distance ...
An ablation treatment apparatus has a multiple antenna device with a primary antenna and a secondary antenna. The secondary antenna is positioned in a lumen of the primary antenna as the primary antenna is introduced through tissue to a selected tissue site. At the tissue site the secondary antenna is deployed from the primary antenna in a lateral direction relative to a longitudinal axis of the primary antenna. At least a portion of a distal end of the secondary antenna is structurally less rigid than the primary antenna. The primary antenna is constructed to be rigid enough to be introduced and advanced through tissue. A cable couples the energy source to one or more of the antennas.
low energy - MedHelps low energy Center for Information, Symptoms, Resources, Treatments and Tools for low energy. Find low energy information, treatments for low energy and low energy symptoms.
The inert two-Higgs-doublet model (i2HDM) is a theoretically well-motivated example of a minimal consistent dark matter (DM) model which provides monojet, mono-Z, mono-Higgs, and vector-boson-fusion+ETmiss signatures at the LHC, complemented by signals in direct and indirect DM search experiments. In this paper we have performed a detailed analysis of the constraints in the full five-dimensional parameter space of the i2HDM, coming from perturbativity, unitarity, electroweak precision data, Higgs data from the LHC, DM relic density, direct/indirect DM detection, and LHC monojet analysis, as well as implications of experimental LHC studies on disappearing charged tracks relevant to a high DM mass region. We demonstrate the complementarity of the above constraints and present projections for future LHC data and direct DM detection experiments to probe further i2HDM parameter space. The model is implemented into the CalcHEP and micrOMEGAs packages, which are publicly available at the HEPMDB ...
I sort of remember my electronics theroy on SWR and the importance of having an antenna length in specific divisions of the wavelength, from eons ago....
Photosynthesis in higher plants relies upon collection of light by chlorophyll molecules associated with light harvesting chlorophyll a/b-binding (LHC) proteins. The two most abundant of these are Lhcb1 and Lhcb2, which make up light harvesting complex (LHC) II trimers. They are also involved in facilitating state transitions, a process during which energy balancing between photosystem (PS) II and I is achieved. Overexcitation of PSII reduces the plastoquinone pool which activates STN7, a kinase, that phosphorylates a threonine residue on Lhcb1 and Lhcb2. In order to studythe kinetics of this we developed antibodies capable of recognizingphosphorylated forms of each of these proteins. This showed that Lhcb2 is more rapidly phosphorylated than Lhcb1, that there are no differences in the migration of phosphorylated and non-phosphorylated forms of Lhcb1 and Lhcb2 and that the majority of phosphorylated LHCII (P-Lhcb1 and PLhcb2) are associated with super- and megacomplexes. Furthermore, a state ...
Writer: Steve Byrns, 325-653-4576, [email protected] SAN ANTONIO - Theyre "baack!" And after a two-year hiatus, red katydids have returned by the millions to torment Central Texans with their incessant racket and voracious appetite for oak leaves and other desirable plants.. "This is the worst outbreak Ive ever seen," said Molly Keck, Texas AgriLife Extension Service integrated pest management specialist for Bexar County. "Our office is being inundated with calls from folks wanting to know if the insects will kill their trees, what can be done to stop them and how long this will last.". Keck said red katydids, Paracyrtophyllus robustus or Central Texas leaf katydid, can damage landscape and pasture plants through defoliation when numbers are as high as they are now, though the damage they inflict is usually not long-term. Most of the time the katydids are green, but during outbreak years, the red form is predominant.. "They are a tree-dwelling insect that prefer oaks," Keck said. "They have ...
Global Indoor Distributed Antenna Systems (DAS) Market Insights, Forecast to 2025 is a market research report available at US $4900 for a Single User PDF License from RnR Market Research Reports Library.
AutomotiveNL bevordert een bloeiende Nederlandse automotive sector door zowel nationaal als internationaal de sector te profileren en te representeren bij OEMs, automotive toeleveranciers, koepelorganisaties, clusterorganisaties en overheden. Missie De inhoudelijke focusgebieden zijn Smart Mobility, Green Mobility, Manufacturing en Materials. AutomotiveNL richt zich op innovatie, onderwijs en kennistransfer, validatie en internationalisering. Daarnaast stimuleert ze op de Automotive Campus de komst van nieuwe bedrijven én onderwijsactiviteiten.
Complete information for CYP2S1 gene (Protein Coding), Cytochrome P450 Family 2 Subfamily S Member 1, including: function, proteins, disorders, pathways, orthologs, and expression. GeneCards - The Human Gene Compendium
Complete information for CEP131 gene (Protein Coding), Centrosomal Protein 131, including: function, proteins, disorders, pathways, orthologs, and expression. GeneCards - The Human Gene Compendium
Everybody knows that colour is one to make an attractive room design, of the most significant facets. . Color is definitely a vital component for producing or remodeling models, thus choosing the shades that are right have to be carefully considered.
Proxicast: Antenna & Extension Cables For Cellular 3G/4G/LTE & Wi-Fi Applications for Proxicast LAN-Cell and PocketPORT cellular 3G/4G Routers and other 3G routers, 4G routers and LTE routers. - page 2
... by real people like you. Only at eHam.net. - eHam.net is a Web site dedicated to ham radio (amateur radio).
The chlorophyll-binding subunits of photosystems I and II are internal antenna light-harvesting proteins of oxygenic photosynthesis. The antenna proteins that exist in phycobilisomes in cyanobacteria and light-harvesting chlorophyll protein complexes in green plants act as peripheral antenna systems, enabling more efficient absorption of light energy ...
Industry And Research recently generated a research report titled, Global Distributed Antenna Systems (DAS) Market Research Report 2020. The research report represents the potential growth opportunities that overcome in the global market. The report is examined on the basis of secondary research methodologies acquired from historic and forecast data. The global Distributed Antenna Systems (DAS) market is expected to grow substantially and develop in terms of volume and value during the forecast period. The report offers an comprehensive analysis of key drivers, leading market players, key segments, and regions. in addition, the experts have deeply studied different geographical areas and presented a competitive scenario to assist new entrants, leading market players, and investors determine emerging economies. These insights offered in the report would help market players to formulate strategies for the future and gain a strong position in the global market.. The report starts with a brief ...
Health benefits of liquid chlorophyll at skeleton. Chlorophyll encouraged to our website, on this moment Im going to teach you about Chlorophyll.. And today, this is actually the very first image, chlorophyll, chlorophyll a, chlorophyll supplements, chlorophyll water, chlorophyll b, chlorophyll definition, chlorophyll function, chlorophyll in algae, chlorophyll a structure, chlorophyllin :. ...
Antenna gain-to-noise-temperature (G/T) is a figure of merit in the characterization of antenna performance, where G is the antenna gain in decibels at the receive frequency, and T is the equivalent noise temperature of the receiving system in kelvins. The receiving system noise temperature is the summation of the antenna noise temperature and the RF chain noise temperature from the antenna terminals to the receiver output. Antenna temperature (Tant) is a parameter that describes how much noise an antenna produces in a given environment. Antenna noise temperature is not the physical temperature of the antenna but rather an expression of the available noise power at the antenna flange. Moreover, an antenna does not have an intrinsic "antenna temperature" associated with it; rather the temperature depends on its gain pattern and the thermal environment that it is placed in. Antenna temperature is also sometimes referred to as Antenna Noise Temperature. To define the environment, well introduce a ...
Here is the practical method. I just scribbled it on my iPad. You may download it as a PDF file. :-)" - Thierry. Thierry, I have seen something similar to this (The EPE-2008 theremin had a on-board circuit to assist tuning) - but, in playing with the EPE circuit, I found the operation of this circuit unsatisfactory.. My understanding (and my experiments) indicate that maximum loading on the oscillator occurs at the resonant frequency of the antenna circuit (coils + antenna capacitance).. and that one wants the hand capacitance "seen" by the antenna to be at the position one requires for the null point (about 60cm from the antenna). The resistance inserted between the oscillator and antenna circuit allows the oscillator frequency to be adjusted without being effected by the antenna loading - so one can find (by looking for peak current) the resonant frequency of the antenna circuit.. However, as soon as the 100k (or whatever value is used to isolate the antenna from the oscillator) is replaced ...
Here is the practical method. I just scribbled it on my iPad. You may download it as a PDF file. :-)" - Thierry. Thierry, I have seen something similar to this (The EPE-2008 theremin had a on-board circuit to assist tuning) - but, in playing with the EPE circuit, I found the operation of this circuit unsatisfactory.. My understanding (and my experiments) indicate that maximum loading on the oscillator occurs at the resonant frequency of the antenna circuit (coils + antenna capacitance).. and that one wants the hand capacitance "seen" by the antenna to be at the position one requires for the null point (about 60cm from the antenna). The resistance inserted between the oscillator and antenna circuit allows the oscillator frequency to be adjusted without being effected by the antenna loading - so one can find (by looking for peak current) the resonant frequency of the antenna circuit.. However, as soon as the 100k (or whatever value is used to isolate the antenna from the oscillator) is replaced ...
A passive reflective antenna located near an active receiving antennas is used to change the energy at the receiving antenna. The change in energy may be such as to remove a null created by multipath or to provide directionality, or both. The receiving antennas is permanently connected to a single receiver. When the receivers output signal degrades below an acceptable level of quality, the reflective phase of the passive antennas load is changed to change the phase of the reflected energy and achieve a desired effect (remove a null, change directionality, etc.) at the receiving antenna. In the simplest embodiment, the termination of the passive antenna is switched from an open circuit to a short circuit, or vice versa, to invert the phase of the reflected energy. The use of reflective elements in antenna designs, usually to achieve directionality, is well known (see the common Yagi or corner reflector antenna designs, for example), but these use passive reflector elements. The present invention, in
From the CERN website:. Last night, protons collided in the Large Hadron Collider (LHC) at the record-breaking energy of 13 TeV for the first time. These test collisions were to set up systems that protect the machine and detectors from particles that stray from the edges of the beam.. A key part of the process was the set-up of the collimators. These devices which absorb stray particles were adjusted in colliding-beam conditions. This set-up will give the accelerator team the data they need to ensure that the LHC magnets and detectors are fully protected.. Today the tests continue. Colliding beams will stay in the LHC for several hours. The LHC Operations team will continue to monitor beam quality and optimisation of the set-up.. This is an important part of the process that will allow the experimental teams running the detectors ALICE, ATLAS, CMS and LHCb to switch on their experiments fully. Data taking and the start of the LHCs second run is planned for early June.. ...
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Feel The Difference Super Concentrated Chlorophyll from Green FoodspH Miracle ChloropHeal is a highly concentrated source of chlorophyll - derived directly from
Roberta Croce is the author of this article in the Journal of Visualized Experiments: In Vitro Reconstitution of Light-harvesting Complexes of Plants and Green Algae
A member of the Legion of Substitute Heroes. Ral Benem is the real name of Chlorophyll Kid. As an child, Ral fell into a vat of plant-growing solution. ...
Photosystem II (PSII), in the thylakoid membrane of higher plants, possesses an extensive system of membrane-associated light-harvesting antenna complexes that increase its spectral and spatial cross section of absorbed solar energy, ensuring its efficient operation, even in low light (reviewed in Dekker and Boekema, 2005). PSII is organized within the stacked grana regions of the thylakoid membranes as a dimer composed of two copies each of the reaction center core proteins D1 and D2 and the core antenna chlorophyll a binding proteins CP43 and CP47 (Peter and Thornber, 1991a). This PSII core dimer is further supplemented by a peripheral antenna system of chlorophyll a/b binding light-harvesting complexes (LHCs). The LHCs are divided into two classes: the monomeric minor antenna complexes, CP29, CP26, and CP24, and the trimeric major antenna complexes, LHCII (Peter and Thornber, 1991b). Each PSII core dimer is bound by two copies each of the minor antenna complexes CP29 and CP26 and an LHCII ...
us is a species of Hibiscus native to tropical eastern Africa in Kenya, Tanzania and Mozambique. It is a shrub growing to 3 m tall. The red or pink flowers are very distinctive in their frilly, finely divided petals.[1][2] Its common names include Japanese Lantern, Coral Hibiscus and Fringed Rosemallow. Flowers with finely dissected petal have a range of colours, the most common being the red form (Keena et al., 2002; Ng, 2006). Leaves resemble those of H. rosa-sinensis. Chemistry The major anthocyanin found in flowers of H. schizopetalus is cyanidin-3-sambusophoroside (Lowry, 1976). From leaves, two new triterpene esters have been isolated (Jose & Vijayan, 2006).. ...
A method of beam selection in a smart antenna system is provided. The method includes receiving a plurality of uplink beams by a plurality of receivers, each corresponding with one of the plurality of uplink beams. Each uplink beam includes signals transmitted by a mobile station. The method further includes analyzing each of the plurality of uplink beams and selecting an uplink beam from the plurality of uplink beams based at least in part on the analysis of the uplink beams. The method further includes switching to the selected beam in real time to allow the signals communicated in the selected beam to be communicated to a base station transceiver.
Chlorophyll A vs B Chlorophyll A and Chlorophyll B are two types of chlorophyll. Chlorophyll is the substance that is present in the leaves of plants and is
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The LHCb experiment finds intriguing anomalies in the way some particles decay. If confirmed, these would be a sign of new physics phenomena not predicted by the Standard Model of particle physics. The observed signal is ...
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The Radius 200 utilizes Alto Professionals most sophisticated diversity system, a cutting-edge system called True Diversity. Altos True Diversity receiver design is absolutely state-of-the-art. True Diversity system improves upon Radius 100s Diversity system because it utilizes two separate receiver sections as well as two antenna systems. The unit constantly polls both receivers and the signals at the antennae, to instantly and seamlessly select the stronger signal. This is what "bulletproof" wireless microphone performance sounds like.. The Radius 200 also comes in four versions, all of which feature our True Diversity system:. ...
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An electrical device configured to install within a wall mounted electrical box includes an antenna bezel frame, an antenna element, and a radio frequency circuitry component. At least a portion of the antenna bezel frame is configured to protrude through an opening in a faceplate. The antenna element is mounted to the antenna bezel frame such that the antenna element is located a distance forward of a plane that contains a front surface of the faceplate when the field configurable electrical device is installed. The radio frequency circuitry component is in electrical communication with the antenna element and is configured to receive a control signal from the antenna element.
A helical antenna for use with small portable wireless devices as disclosed which includes a magnetic tuner including a magnet adapted to move in a direction substantially perpendicular to the longitudinal axis of the antenna whereby the impedence of the antenna can be varied greatly by displacement of the magnet only a short distance. The antenna preferably further includes a variable capacitor for reducing any mismatching between the input impedence of the antenna and the characteristic impedence of an associated feeder which can be caused by adjusting the magnetic tuner.
B1=B800/850 light-harvesting protein beta 1...B2=B800/850 light-harvestingprotein beta 2 [Rhodospirillum molischianum, DSM 119, Genomic, 5 genes,2300 nt ...
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PROKIL S350 P is an aqueous dispersion based on a copolymer of styrene and butyl acrylate. It is a universal binder for all kinds of paints. The dispersion is especially suitable for those applications with high demands regarding water and alkali resistance. Due to its high pigment binding capability, PROKIL S350 P is also especially suitable for high PVC paints. PROKIL S 350 P can therefore be used as single binder in building adhesives, ceramic tile adhesives, fillers or repair compounds ...
LIBERIA. Wanted to let you know that Star Radio is conducting tests on 4025 kHz. The transmitter I built is small, 2,500 watts, but I tried to make up for it with antenna gain, as the had specific areas they wanted to cover. I didnt have to go to Monrovia, because the whole transmission system was designed as a "kit". They all came to the factory and I took them step-by-step thru the transmitter install, tower erection, and tuning the antenna system. Here are the details of the system. The transmitter is a Solid State Class E modulated via a Pulse Width Modulator. Power out is continuously adjustable from 0 to 2,500 watts. The antenna is a "Bow-Tie" dipole, fed with Open-Wire Line, and a Link-Coupled Antenna Tuning Unit. Antenna height is approximately 50 feet. It was to be oriented broadside East / West. I dont know the exact Geo coordinates. Im going to get on the site and look for reports on Star Radio. Please tell everyone I said Hi, and thank them for the reports. Talk to you later ...
After reading this, you may think differently the next time your dog tries to eat grass! In all seriousness, Chlorophyll is beneficial for
Im licenced for 1500W (which to me is silly and obscene at this frequency) but you wouldnt find me anywhere near the antenna when operating. Even at 1W I would not want to be anywhere close to the antenna ...
Purchase this Rugged Ridge 15 Black Reflex Radio Antenna for your 2007-2018 Jeep JK Wrangler, 2018-2020 Jeep JL Wrangler or your 2020 Jeep Gladiator from CJ Pony Parts today! This 15 Black Reflex Radio Antenna from Rugged Ridge has a shorter 15
The file O6.Leaves.At.the.Bottom.of.the.Pool.by.Chlorophyll.Fluxbunny.mp3 identified by urn:sha1:GK2UE7QU5FT3QHYHYFBTZ7ILMQCMR3BQ is licensed to the public under the Paternit -Pas dUtilisation Commerciale-Partage des Conditions Initiales lIdentique 3.0 Unported license ...
• 100 mg Chlorophyll per tablespoon |br /| • Delicious cinnamon mint flavor |br /| • Sugar free |br /| • 32 Servings per bottle |br /| • All natural internal deodorizer
ITELITE MRA24014E - 2.4Ghz 14 dBi panel antenna with integrated small Weatherproof Enclosure, MMCX or UFL Pigtail included product description
On the basis of the foregoing, we can reach the following conclusions. 1. In molecular AC with charge transfer, as in binary CTC, with the exception of AC with a 4-membered bridge, intermolecular...
From time to time I come across a supplement that really does change my life in a big way - more recently curcumin was one of those supplements. As some of you.... ...
THURSDAY, April 20, 2017 (HealthDay News) -- When brain cells are starved of oxygen, people and all other mammals run out of energy and begin to die.. Not so for a hairless, underground rodent called the naked mole-rat. It survives low-oxygen conditions because its brain cells switch from using glucose as fuel to fructose -- a process that is typically found in plants, not animals.. Scientists believe their new findings could someday lead to new treatments for people who have a heart attack or stroke.. "This is just the latest remarkable discovery about the naked mole-rat -- a cold-blooded mammal that lives decades longer than other rodents, rarely gets cancer and doesnt feel many types of pain," said the studys leader, Thomas Park. He is a professor of biological sciences at the University of Illinois at Chicago.. The naked mole-rat is native to Africa and lives in extensive underground burrows. In the latest research on these remarkable creatures, Park and his colleagues found that naked ...
In photosynthesis, sunlight is converted into chemical energy that is stored mainly as carbohydrates and supplies basically all life on Earth with energy.. In order to efficiently absorb the light energy, plants have developed the outer light harvesting antenna, which is composed of ten different protein subunits (LHC) that bind chlorophyll a and b as well as different carotenoids. In addition to the light harvesting function, the antenna has the capacity to dissipate excess energy as heat (feedback de-excitation or qE), which is crucial to avoid oxidative damage under conditions of high excitation pressure. Another regulatory function in the antenna is the state transitions in which the distribution of the trimeric LHC II between photosystem I (PS I) and II is controlled. The same ten antenna proteins are conserved in all higher plants and based on evolutionary arguments this has led to the suggestion that each protein has a specific function.. I have investigated the functions of individual ...
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0027] Referring to FIG. 5, the fifth embodiment of the instant disclosure provides a touch panel Z having an antenna function. Comparing FIG. 5 with FIG. 1B, the difference between the fifth embodiment and the first embodiment is that: in the fifth embodiment, the antenna unit 3 includes at least one antenna radiation structure 30 embedded in the transparent substrate 20. In other words, the transparent substrate 20 includes a first transparent body 20 and a second transparent body 20 disposed on the first transparent body 20, and the antenna radiation structure 30 is disposed between the first transparent body 20 and the second transparent body 20. In addition, the antenna unit 3 includes at least one conductive track 31 simultaneously formed on the top surface 201, the lateral surface 202, and the bottom surface 203 of the first transparent body 20, and the antenna radiation structure 30 can be electrically connected to a wireless module W under the first transparent body 20 through ...
Did you know greed food has chlorophyll as a part of its genetic makeup or constituents? Do you know the difference between chlorophyll and blood?. Chlorophyll has magnesium and red blood cells have iron in the center of the molecule, holding it together. The name of the mechanism holding it all together is called a chelate. What is very interesting, is the fact red blood cells carry oxygen. I have to believe from my experience, it is possible knowing the body is a self-healing mechanism that people eat greens have less of a bleeding issue and more than likely have better quality blood. I am making the assumption because green food assists the liver in proper function. Optimal liver health promotes clearing of estrogen; excessive estrogen is a leading cause of heavy menses and bleeding.. Are you now seeing why all the talk about whole food versus process, dead food is significantly critical? Have you ever heard of succotash? Some of you may have never heard of it, or others may remember the ...
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Chlorophyll does not stop bad breath in humans because the body cannot absorb the chemoprotein, reports Healthline.com. However, when dogs consume chlorophyll, it prevents and treats their bad breath...
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Chlorophyll list and information including what is Chlorophyll, health benefits and usage indications. Find articles and product list for other top low-carb products, fat-burners, nutrition bars and shakes.
Kinetics of N, N-Dimethyaniline-Benzenesulphonylchloride Charge-Transfer Complex Initiated Cyclopolymerization of Divinyl Monomer
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amsterdam NETHERLANDS. suckerPUNCH: describe your project.. lucy McRAE: Chlorophyll skin, is a short film experimenting with color, movement, absorption and the body made for Amsterdam Fashion Week. A joint project by Lucy McRae and Mandy Smith. [MORE]. ...
National Data Buoy Center - 5-day plot - Chlorophyll at station RKQF1 (26.027N 81.734W) - Lower Henderson Creek, Rookery Bay Reserve, FL.
Clorofila din Liquid Chlorophyll are un puternic efect alcalinizant asupra sistemului digestiv, ajuta la indepartarea mirosurilor corporale neplacute, elimina respiratia urat mirositoare, optimizeaza circulatia sanguina, digestia, reduce senzatia de oboseala, imbunatateste si sprijina sanatatea. Pe langa multe alte efecte benefice, ajuta si la mentinerea unei activitati intestinale optime. Orice substanta care exercita un efect iritant…
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Biologists are finding that most normal vertebrate cells have cilia, small hair-like structures that protrude like antennae into the surrounding environment
CNBCs Maria Bartiromo speaks to House Speaker John Boehner (R-OH) about the leadership of Fed Chairman Bernanke and the impact QE is having on the U.S. economy.

Chlorophyll-binding proteinChlorophyll-binding protein

Within this solution the chlorophyll is bound to protein (LHC-II). Each monomeric LHC-II protein binds 14 chlorophyll molecules ... Within this solution the chlorophyll is bound to protein (LHC-II). Each monomeric LHC-II protein binds 14 chlorophyll molecules ... Chlorophyll: LHC-II. 14 : 1. 3mg/ml : x mg/ml. Volume = 0.8 ml. Mw chlorophyll-a = 893.49 g mol^-1. Mw chlorophyll-b = 907.47 g ... But because i have chlorophyll a and chlorophyll b in my solution....what molecular mass shall i use (a or b). So far ive ...
more infohttp://www.thescienceforum.com/biology/27661-chlorophyll-binding-protein.html

Water in Oil Emulsions: A New System for Assembling Water-soluble Chlorophyll-binding Proteins with Hydrophobic Pigments |...Water in Oil Emulsions: A New System for Assembling Water-soluble Chlorophyll-binding Proteins with Hydrophobic Pigments |...

Water-soluble chlorophyll protein in Brassicaceae plants is a stress-induced chlorophyll-binding protein. Plant Cell Physiol. ... Assembly of water-soluble chlorophyll-binding proteins with native hydrophobic chlorophylls in water-in-oil emulsions. BBA - ... Recombinant water-soluble chlorophyll protein from Brassica oleracea var. Botrys binds various chlorophyll derivatives. ... Hughes, J. L., et al. Magneto-optic spectroscopy of a protein tetramer binding two exciton-coupled chlorophylls. J. Am. Chem. ...
more infohttps://www.jove.com/video/53410/?language=Chinese

Defective chlorophyll a/b-binding protein genes in the genome of a homosporous fern | PNASDefective chlorophyll a/b-binding protein genes in the genome of a homosporous fern | PNAS

Defective chlorophyll a/b-binding protein genes in the genome of a homosporous fern. E Pichersky, D Soltis, and P Soltis ... Defective chlorophyll a/b-binding protein genes in the genome of a homosporous fern ... Defective chlorophyll a/b-binding protein genes in the genome of a homosporous fern ... Defective chlorophyll a/b-binding protein genes in the genome of a homosporous fern ...
more infohttps://www.pnas.org/content/87/1/195?ijkey=3e3d9d13f74ec5be19540fbb5212ff5efca82d16&keytype2=tf_ipsecsha

CAB1B - Chlorophyll a-b binding protein 1B, chloroplastic precursor - Solanum lycopersicum (Tomato) - CAB1B gene & proteinCAB1B - Chlorophyll a-b binding protein 1B, chloroplastic precursor - Solanum lycopersicum (Tomato) - CAB1B gene & protein

The LHC complex consists of chlorophyll a-b binding proteins.. Protein-protein interaction databases. STRING: functional ... Binding sitei. 85. Chlorophyll-a 1By similarity. 1. Metal bindingi. 98. Magnesium (chlorophyll-a 1 axial ligand)By similarity. ... Binding sitei. 212. Chlorophyll-a 5By similarity. 1. Metal bindingi. 213. Magnesium (chlorophyll-a 3 axial ligand)By similarity ... Binding sitei. 218. Chlorophyll-a 1By similarity. 1. Metal bindingi. 230. Magnesium (chlorophyll-a 5 axial ligand)By similarity ...
more infohttps://www.uniprot.org/uniprot/P07370&format=html

Recombinant Iron stress-induced chlorophyll-binding protein(isiA) - CusabioRecombinant Iron stress-induced chlorophyll-binding protein(isiA) - Cusabio

Purchase Recombinant Iron stress-induced chlorophyll-binding protein(isiA). It is produced in in vitro E.coli expression system ... Recombinant Iron stress-induced chlorophyll-binding protein(isiA). Recombinant Iron stress-induced chlorophyll-binding protein( ... Protein Names. Recommended name: Iron stress-induced chlorophyll-binding protein Alternative name(s): CP43. ... Recombinant Iron stress-induced chlorophyll-binding protein(isiA),partial. Yeast. E.coli. Baculovirus. Mammalian cell. ...
more infohttps://www.cusabio.com/Transmembrane-Protein/Recombinant-Iron-stress-induced-chlorophyll-binding-proteinisiA-11145461.html

The photoconvertible water-soluble chlorophyll-binding protein of Chenopodium album is a member of DUF538, a superfamily that...The photoconvertible water-soluble chlorophyll-binding protein of Chenopodium album is a member of DUF538, a superfamily that...

... proteins known as water-soluble Chl-binding proteins (WSCPs). WSCPs exist in two forms: Class I and Class II, of which Class I ... The CaWSCP protein sequence possesses a signature of DUF538, a protein superfamily of unknown function found almost exclusively ... The recombinant CaWSCP was expressed in Escherichia coli as a hexa-histidine fusion protein (CaWSCP-His) that removes Chls from ... Interestingly, while CaWSCP-His could bind both Chl a and Chl b, photoconversion occurred only in CaWSCP-His reconstituted with ...
more infohttps://www.semanticscholar.org/paper/The-photoconvertible-water-soluble-protein-of-album-Takahashi-Yoshikawa/4c898df2b0f35e78f12f242878ca7d094535b2cc

Amino acid deletions in the cytosolic domains of the chlorophyll a-binding protein CP47 slow QA
− oxidation and/or prevent the...Amino acid deletions in the cytosolic domains of the chlorophyll a-binding protein CP47 slow QA − oxidation and/or prevent the...

"Amino acid deletions in the cytosolic domains of the chlorophyll a-binding protein CP47 slow QA − oxidation and/or prevent the ... Amino acid deletions in the cytosolic domains of the chlorophyll a-binding protein CP47 slow QA − oxidation and/or prevent the ... Amino acid deletions in the cytosolic domains of the chlorophyll a-binding protein CP47 slow QA... Clarke, Shannon; Funk, ... Amino acid deletions in the cytosolic domains of the chlorophyll a-binding protein CP47 slow QA − oxidation and/or prevent the ...
more infohttps://www.deepdyve.com/lp/springer_journal/amino-acid-deletions-in-the-cytosolic-domains-of-the-chlorophyll-a-klpDYupb6d

Deletion Mutants of Chlorophyll a/b Binding Proteins Are Efficiently Imported into Chloroplasts but Do Not Integrate into...Deletion Mutants of Chlorophyll a/b Binding Proteins Are Efficiently Imported into Chloroplasts but Do Not Integrate into...

... are integral thylakoid membrane proteins containing three membrane-spanning helices. We have created a series of mutations in ... Deletion Mutants of Chlorophyll a/b Binding Proteins Are Efficiently Imported into Chloroplasts but Do Not Integrate into ... Chlorophyll a/b binding polypeptides (CABp) are integral thylakoid membrane proteins containing three membrane-spanning helices ... 3308877 - Chlorophyll-proteins of the photosystem ii antenna system.. 2495267 - Changes in polypeptide composition of ...
more infohttp://www.biomedsearch.com/nih/Deletion-Mutants-Chlorophyll-Binding-Proteins/16668857.html

ChemIDplus - 127137-94-4 - photosystem II, chlorophyll-binding protein, CP-47 - Searchable synonyms, formulas, resource links,...ChemIDplus - 127137-94-4 - photosystem II, chlorophyll-binding protein, CP-47 - Searchable synonyms, formulas, resource links,...

... chlorophyll-binding protein, CP-47 - Searchable synonyms, formulas, resource links, and other chemical information. ... Substance Name: photosystem II, chlorophyll-binding protein, CP-47. RN: 127137-94-4. Note. *. From the cyanobacterium Anabaena ... Photosystem II chlorophyll-binding protein, CP-47. Systematic Name. *. Protein (Nostoc muscorum clone pAn302/pAn304 gene psbB) ...
more infohttps://chem.nlm.nih.gov/chemidplus/rn/127137-94-4

The light-harvesting chlorophyll a/b binding proteins Lhcb1 and Lhcb2 play complementary roles during state transitions in...The light-harvesting chlorophyll a/b binding proteins Lhcb1 and Lhcb2 play complementary roles during state transitions in...

The light-harvesting chlorophyll a/b binding proteins Lhcb1 and Lhcb2 play complementary roles during state transitions in ... Klorofyll a/b-bindande proteiner (s k light harvesting chlorophyll a/b-binding proteins eller LHC proteiner) är viktiga för ... higher plants relies upon collection of light by chlorophyll molecules associated with light harvesting chlorophyll a/b-binding ... We tried complementing amiLhcb2 with modified Lhcb2 genes coding for proteins with altered amino acids, Arg2 to Lys or the ...
more infohttp://umu.diva-portal.org/smash/record.jsf?pid=diva2:777625&language=sv

5lcb » Bacteriochlorophyll c-binding protein, complex with chlorophyll - Orientations of Proteins in Membranes (OPM) database5lcb » Bacteriochlorophyll c-binding protein, complex with chlorophyll - Orientations of Proteins in Membranes (OPM) database

Comments on 5lcb » Bacteriochlorophyll c-binding protein, complex with chlorophyll. The protein is actually located in ... 5lcb » Bacteriochlorophyll c-binding protein, complex with chlorophyll. 3D view in Jmol or Webmol Download Coordinates Topology ... Localization: Bacterial Gram-negative inner membrane (509 proteins). 5lcb » Bacteriochlorophyll c-binding protein, complex with ... Bacteriochlorophyll binding protein (2 proteins) *Species: Chlorobium tepidum (2 proteins). * ...
more infohttp://opm.phar.umich.edu/protein.php?pdbid=5lcb

Chlorophyll-binding proteins revisited - a multigenic family of light-harvesting and stress proteins from a brown algal...Chlorophyll-binding proteins revisited - a multigenic family of light-harvesting and stress proteins from a brown algal...

... proteins revealed features common to all LI818 proteins that are likely to interfere with their capacity to bind chlorophyll b ... codes for 53 CBPs falling into all major families except the exclusively green family of chlorophyll a/b binding proteins. Most ... In the light of this finding, we examined the possibility that LI818 proteins may have originated in a chlorophyll c/ ... but may enable binding of chlorophyll c and fucoxanthin. ... Instead, our data favor an origin in an ancestral chlorophyll a ...
more infohttps://0-bmcevolbiol-biomedcentral-com.brum.beds.ac.uk/articles/10.1186/1471-2148-10-365

Rubisco small subunit, chlorophyll a/b-binding protein and sucrose : fructan-6-fructosyl transferase gene expression and sugar...Rubisco small subunit, chlorophyll a/b-binding protein and sucrose : fructan-6-fructosyl transferase gene expression and sugar...

Rubisco small subunit, chlorophyll a/b-binding protein and sucrose : fructan-6-fructosyl transferase gene expression and sugar ... The expression of message for Rubisco small subunit (RbcS), chlorophyll a/b-binding protein (Cab), sucrose (Suc):fructan-6- ... chlorophyll a/b-binding protein and sucrose : fructan-6-fructosyl transferase gene expression and sugar status in single barley ... chlorophyll a/b-binding protein and sucrose : fructan-6-fructosyl transferase gene expression and sugar status in single barley ...
more infohttp://cadair.aber.ac.uk/dspace/handle/2160/1474

Comparison of oligomeric states and polypeptide compositions of fucoxanthin chlorophyll a/c-binding protein complexes among...Comparison of oligomeric states and polypeptide compositions of fucoxanthin chlorophyll a/c-binding protein complexes among...

Fucoxanthin chlorophyll a/c-binding protein (FCP) is a unique light-harvesting apparatus in diatoms. Several biochemical ... Two types of fucoxanthin-chlorophyll-binding proteins I tightly bound to the photosystem I core complex in marine centric ... Fucoxanthin chlorophyll a/c-binding protein (FCP) is a unique light-harvesting apparatus in diatoms. Several biochemical ... Utilization of light by fucoxanthin-chlorophyll-binding protein in a marine centric diatom, Chaetoceros gracilis. *Tomoko ...
more infohttps://www.semanticscholar.org/paper/Comparison-of-oligomeric-states-and-polypeptide-of-Nagao-Takahashi/c4cd1db84dcd3fcbce76e1be10e3a877523f8838

anti-Lhca4 | PSI type IV chlorophyll a/b-binding protein antibodiesanti-Lhca4 | PSI type IV chlorophyll a/b-binding protein antibodies

PSI type IV chlorophyll a/b-binding protein antibodies, CAB protein antibody, At3g47470 ... light harvesting protein antibody, Lhc, LHCI, LHCI-730, anti-Lhca4 , ... The light-harvesting protein Lhca4 is one of the four main and highly conserved types of chlorophyll a/b-binding proteins ( ... Related products: Lhca4 , PSI type IV chlorophyll a/b-binding protein 2 , Set of 10 plant anti-Lhca and anti-Lhcb antibodies ...
more infohttps://www.agrisera.com/en/artiklar/lhca4-psi-type-iv-chlorophyll-a_b-binding-protein.html

anti-Lhcb1 | LHCII type I chlorophyll a/b-binding protein antibodiesanti-Lhcb1 | LHCII type I chlorophyll a/b-binding protein antibodies

LHCII type I chlorophyll a/b-binding protein antibodies, CAB proteins, At1g29910, At1g29920, At1g29930, At2g34430 , At2g34420 ... light harvesting protein antibody, lhc ,Lhc , Lhcb1, anti-Lhcb1 , ... LHCII type I chlorophyll a/b-binding protein. AS01 004PRE , Lhcb1 , LHCII type I chlorophyll a/b-binding protein, pre-immune ... Home / Plant/Algal antibodies / Photosynthesis / LHC / anti-Lhcb1 , LHCII type I chlorophyll a/b-binding protein antibodies ...
more infohttps://www.agrisera.com/en/artiklar/plantalgal-cell-biology/photosynthesis-/lhc/lhcb1-lhcii-type-i-chlorophyll-a-b-binding-protein-100-g.html

Genetic deletion of proteins resembling Type IV pilins in : their role in binding or transfer of newly synthesized chlorophyll...Genetic deletion of proteins resembling Type IV pilins in : their role in binding or transfer of newly synthesized chlorophyll...

However, Sll1694 was found to affect the rate of chlorophyll synthesis and of the assembly of chlorophyll-binding proteins. In ... Genetic deletion of proteins resembling Type IV pilins in : their role in binding or transfer of newly synthesized chlorophyll ... Moreover, the biogenesis of chlorophyll-protein complexes with a 77K chlorophyll fluorescence emission maximum at 685 mm was ... their role in binding or transfer of newly synthesized chlorophyll sp. PCC 6803: their role in binding or transfer of newly ...
more infohttps://insights.ovid.com/pmob/199939060/00001758-199939060-00010

Search Results -   - 32 Results - Digital LibrarySearch Results - - 32 Results - Digital Library

The chlorophyll-binding protein CP47 in photosystem II. Final report Description: Generally, light-harvesting chlorophyll- ... The T7 DNA binding protein, the gene 2.5 protein, interacts with gene 5 protein and gene 4 protein to increase processivity and ... binds to gene 5 protein and clamps it to a primer-template. They have analyzed the binding of gene 5 protein-thioredoxin to ... remaining in the absence of PS II and PS I in Synechocystis did not resemble those of chlorophyll bound to a CP43-like protein ...
more infohttps://digital.library.unt.edu/search/?q5=%22Protein%20Engineering%22&t5=dc_subject&searchType=advanced

Protocols and Video Articles Authored by Dror NoyProtocols and Video Articles Authored by Dror Noy

A New System for Assembling Water-soluble Chlorophyll-binding Proteins with Hydrophobic Pigments ... Design Principles for Chlorophyll-binding Sites in Helical Proteins Proteins. Feb, 2011 , Pubmed ID: 21117078 ... Assembly of Water-soluble Chlorophyll-binding Proteins with Native Hydrophobic Chlorophylls in Water-in-oil Emulsions ... Water in Oil Emulsions: A New System for Assembling Water-soluble Chlorophyll-binding Proteins with Hydrophobic Pigments. ...
more infohttps://www.jove.com/author/Dror_Noy

A structural investigation of the central chlorophyll a binding sites in the minor photosystem II antenna protein, Lhcb4 | IRIS...A structural investigation of the central chlorophyll a binding sites in the minor photosystem II antenna protein, Lhcb4 | IRIS...

A structural investigation of the central chlorophyll a binding sites in the minor photosystem II antenna protein, Lhcb4. ... A structural investigation of the central chlorophyll a binding sites in the minor photosystem II antenna protein, Lhcb4 ... of the immediate environment in the binding pocket of the chlorophyll a molecule were defined for each cofactor binding site. ... of the immediate environment in the binding pocket of the chlorophyll a molecule were defined for each cofactor binding site. ...
more infohttps://iris.univr.it/handle/11562/14926

BBA - Bioenergetics (v.1459, #2-3) | www.chemweb.comBBA - Bioenergetics (v.1459, #2-3) | www.chemweb.com

Revealing the structure of the photosystem II chlorophyll binding proteins, CP43 and CP47 by J Barber; E Morris; C Büchel (239- ... A review of the structural properties of the photosystem II chlorophyll binding proteins, CP47 and CP43, is given and a model ... Nevertheless, the same type of movement of the Rieske protein is observed in the b 6 f as in the bc 1 complex upon the binding ... The protein adopts a Rossmann fold: an open, twisted, parallel β-sheet, flanked by helices. However, the binding of NADP+ to ...
more infohttps://chemweb.com/articles/00052728/14590002

MEDLINE - Resultado p gina 1
	MEDLINE - Resultado p gina 1

... chlorophyll binding protein, CP-43); 127137-94-4 (photosystem II, chlorophyll-binding protein, CP-47); 451W47IQ8X (Sodium ... Escherichia coli Proteins); 0 (Reactive Oxygen Species); 0 (Repressor Proteins); 0 (arcA protein, E coli); 15XUH0X66N (Tolonium ... Light-Harvesting Protein Complexes); 0 (Photosynthetic Reaction Center Complex Proteins); 0 (Photosystem II Protein Complex); 0 ... In contrast, in the one-electron-reduced state the rate of oxygen binding is hyperbolic, implying a more complex binding ...
more infohttp://bases.bireme.br/cgi-bin/wxislind.exe/iah/online/?IsisScript=iah/iah.xis&nextAction=lnk&base=MEDLINE&lang=p&format=detailed.pft&indexSearch=EX&exprSearch=D08.244.300

Binding of chloroplast signal recognition particle to a thylakoid membrane protein substrate in aqueous solution and...Binding of chloroplast signal recognition particle to a thylakoid membrane protein substrate in aqueous solution and...

light-harvesting chlorophyll-binding protein (LHCP). major light-harvesting chlorophyll-binding protein of photosystem II ( ... light-harvesting chlorophyll-binding protein (LHCP). *major light-harvesting chlorophyll-binding protein of photosystem II ( ... light-harvesting chlorophyll-binding protein; Lhcb1, major light-harvesting chlorophyll-binding protein of photosystem II; SRP ... major light-harvesting chlorophyll-binding protein of photosystem II). We show that Lhcb1 residues 166-176 cross-link ...
more infohttp://www.biochemj.org/content/437/1/149
  • Amino acid deletions in the cytosolic domains of the chlorophyll a-binding protein CP47 slow QA. (deepdyve.com)
  • Eaton-Rye, Julian 2004-10-13 00:00:00 The Photosystem II (PSII) core antenna chlorophyll a-binding protein, CP47, contains six membrane-spanning α-helices separated by five hydrophilic loops: A-E. To identify important hydrophilic cytosolic regions, oligonucleotide-directed mutagenesis was employed to introduce short segment deletions into loops B and D, and the C-terminal domain. (deepdyve.com)
  • The data therefore suggest an important structural role for loop D in the assembly of PSII and a potential interaction between the C-terminal domain of CP47 and the PSII reaction center that, when perturbed, results in photoinduced protein aggregates involving the D1 protein. (deepdyve.com)
  • This method has allowed, in particular, the engineering of mutant LHCs in which each of the residues coordinating the central Mg atoms of the chlorophylls was replaced by noncoordinating amino acids [Bassi, R., Croce, R., Cugini, D., and Sandonà, D. (1999) Proc. (univr.it)
  • Of the 14 densities assigned to chlorophyll, the model predicted that five have their magnesium ions within 4 Å of the imidazole nitrogens of histidine residues. (chemweb.com)
  • For the remaining seven histidine residues the densities attributed to chlorophylls were within 4-8 Å of the imidazole nitrogens and thus too far apart for direct ligation with the magnesium ion within the tetrapyrrole head group. (chemweb.com)
  • Deletions in the C-terminal domain also created mutants with large protein aggregates that were recognized by an antibody raised against the PSII reaction center D1 protein. (deepdyve.com)
  • This structure shows changes in the substrate binding regions of the enzyme and a reduction in active site volume that are consistent with the observed changes in substrate specificity from fatty acids in the native enzyme to small alkanes in P450PMO. (unt.edu)
  • TatC captures substrate proteins by binding their signal peptides. (biomedsearch.com)
  • The structural basis for additivity of effects of mutations on protein function was examined by determining crystal structures of single and double mutants in the hydrophobic core of gene V protein. (unt.edu)
  • A cofactor is any non-protein substance required for a protein to be catalytically active. (uniprot.org)
  • By comparing the spectra of these mutants with those of the wild-type protein, the state of interaction of the carbonyl group, the coordination state of the central magnesium ion, and the dielectric constant (polarity) of the immediate environment in the binding pocket of the chlorophyll a molecule were defined for each cofactor binding site. (univr.it)
  • Mutational and structural analysis identify the basis of selectivity between a and b forms of chlorophyll. (nature.com)
  • We propose that the protein encoded by sll1694 is involved in, but is not absolutely required for, delivering chlorophyll to nascent photosystems and antennae. (ovid.com)
  • Substitution of a single amino acid in a protein will often lead to substantial changes in properties. (unt.edu)
  • When amino acid substitutions are made at well-separated locations in a single protein, their effects are generally additive. (unt.edu)
  • Additivity of effects of amino acid substitutions is very useful because the properties of proteins with any combination of substitutions can be inferred directly from those of the proteins with single changes. (unt.edu)
  • p>When browsing through different UniProt proteins, you can use the 'basket' to save them, so that you can back to find or analyse them later. (uniprot.org)
  • When incubated with thylakoids in the absence of stroma and/or ATP, a significant amount of wild-type protein assumes a form that is resistant to alkali extraction but is protease sensitive, like the imported deletion proteins. (biomedsearch.com)
  • Structural effects of mutations were found to be cumulative when two mutations were made in a single protein. (unt.edu)
  • Structural distortions induced by mutations in gene V protein decrease rapidly, but not isotropically, with distance from the site of mutation. (unt.edu)
  • The goals of this project are to investigate (1) the kinetics and stabilities of engineered cytochrome P450 (P450) small alkane hydroxylases and their evolutionary intermediates, (2) the structural basis for catalytic proficiency on small alkanes of these engineered P450s, and (3) the changes in redox control resulting from protein engineering. (unt.edu)
  • In addition, statistical analyses of phylogenetic trees show an independent origin in different eukaryotic lineages or a green algal origin of LI818 proteins to be highly unlikely. (beds.ac.uk)
  • The small amount of protein found associated with the thylakoids was largely resistant to alkali extraction but was sensitive to protease, unlike wild-type protein, which is resistant to both treatments. (biomedsearch.com)
  • This form of the wild-type protein is not chased into a protease-resistant form by adding stroma and/or ATP. (biomedsearch.com)
  • The protein adopts a Rossmann fold: an open, twisted, parallel β-sheet, flanked by helices. (chemweb.com)
  • However, deletions in the C-terminal domain did not prevent the assembly of PSII reaction centers although the mutant Δ(S471-T473), with a deletion adjacent to helix VI, exhibited retarded QA − oxidation kinetics and the PSII-specific herbicide, atrazine, bound less tightly in the Δ(S471-T473) and Δ(F475-D477) strains. (deepdyve.com)
  • In the sll1694/sll1695 deletion mutant in a PS I-less/chlL− background, which is unable to synthesize chlorophyll in darkness, chlorophyll synthesis during the first hours of illumination after dark incubation was 30% slower than in the PS I-less/chlL− strain. (ovid.com)