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.Bacteroidetes: A phylum of bacteria comprised of three classes: Bacteroides, Flavobacteria, and Sphingobacteria.Phylogeny: The relationships of groups of organisms as reflected by their genetic makeup.Genome, Bacterial: The genetic complement of a BACTERIA as represented in its DNA.Bacteria: One of the three domains of life (the others being Eukarya and ARCHAEA), also called Eubacteria. They are unicellular prokaryotic microorganisms which generally possess rigid cell walls, multiply by cell division, and exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal. Bacteria can be classified by their response to OXYGEN: aerobic, anaerobic, or facultatively anaerobic; by the mode by which they obtain their energy: chemotrophy (via chemical reaction) or PHOTOTROPHY (via light reaction); for chemotrophs by their source of chemical energy: CHEMOLITHOTROPHY (from inorganic compounds) or chemoorganotrophy (from organic compounds); and by their source for CARBON; NITROGEN; etc.; HETEROTROPHY (from organic sources) or AUTOTROPHY (from CARBON DIOXIDE). They can also be classified by whether or not they stain (based on the structure of their CELL WALLS) with CRYSTAL VIOLET dye: gram-negative or gram-positive.Eubacterium: A genus of gram-positive, rod-shaped bacteria found in cavities of man and animals, animal and plant products, infections of soft tissue, and soil. Some species may be pathogenic. No endospores are produced. The genus Eubacterium should not be confused with EUBACTERIA, one of the three domains of life.Archaea: One of the three domains of life (the others being BACTERIA and Eukarya), formerly called Archaebacteria under the taxon Bacteria, but now considered separate and distinct. They are characterized by: (1) the presence of characteristic tRNAs and ribosomal RNAs; (2) the absence of peptidoglycan cell walls; (3) the presence of ether-linked lipids built from branched-chain subunits; and (4) their occurrence in unusual habitats. While archaea resemble bacteria in morphology and genomic organization, they resemble eukarya in their method of genomic replication. The domain contains at least four kingdoms: CRENARCHAEOTA; EURYARCHAEOTA; NANOARCHAEOTA; and KORARCHAEOTA.Gram-Negative Bacteria: Bacteria which lose crystal violet stain but are stained pink when treated by Gram's method.Gram-Positive Bacteria: Bacteria which retain the crystal violet stain when treated by Gram's method.Bacteria, AnaerobicRNA, Ribosomal, 16S: Constituent of 30S subunit prokaryotic ribosomes containing 1600 nucleotides and 21 proteins. 16S rRNA is involved in initiation of polypeptide synthesis.Chlorobium: A genus of phototrophic, obligately anaerobic bacteria in the family Chlorobiaceae. They are found in hydrogen sulfide-containing mud and water environments.Metatarsophalangeal Joint: The articulation between a metatarsal bone (METATARSAL BONES) and a phalanx.Cuba: An island in the Greater Antilles in the West Indies, south of Florida. With the adjacent islands it forms the Republic of Cuba. Its capital is Havana. It was discovered by Columbus on his first voyage in 1492 and conquered by Spain in 1511. It has a varied history under Spain, Great Britain, and the United States but has been independent since 1902. The name Cuba is said to be an Indian name of unknown origin but the language that gave the name is extinct, so the etymology is a conjecture. (From Webster's New Geographical Dictionary, 1988, p302 & Room, Brewer's Dictionary of Names, 1992, p132)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.Databases, Protein: Databases containing information about PROTEINS such as AMINO ACID SEQUENCE; PROTEIN CONFORMATION; and other properties.Proteome: The protein complement of an organism coded for by its genome.Internet: A loose confederation of computer communication networks around the world. The networks that make up the Internet are connected through several backbone networks. The Internet grew out of the US Government ARPAnet project and was designed to facilitate information exchange.Encyclopedias as Topic: Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)Ethnobotany: The study of plant lore and agricultural customs of a people. In the fields of ETHNOMEDICINE and ETHNOPHARMACOLOGY, the emphasis is on traditional medicine and the existence and medicinal uses of PLANTS and PLANT EXTRACTS and their constituents, both historically and in modern times.Medicine, Traditional: Systems of medicine based on cultural beliefs and practices handed down from generation to generation. The concept includes mystical and magical rituals (SPIRITUAL THERAPIES); PHYTOTHERAPY; and other treatments which may not be explained by modern medicine.Interior Design and Furnishings: The planning of the furnishings and decorations of an architectural interior.Classification: The systematic arrangement of entities in any field into categories classes based on common characteristics such as properties, morphology, subject matter, etc.Political Systems: The units based on political theory and chosen by countries under which their governmental power is organized and administered to their citizens.Phototrophic Processes: Processes by which phototrophic organisms use sunlight as their primary energy source. Contrasts with chemotrophic processes which do not depend on light and function in deriving energy from exogenous chemical sources. Photoautotrophy (or photolithotrophy) is the ability to use sunlight as energy to fix inorganic nutrients to be used for other organic requirements. Photoautotrophs include all GREEN PLANTS; GREEN ALGAE; CYANOBACTERIA; and green and PURPLE SULFUR BACTERIA. Photoheterotrophs or photoorganotrophs require a supply of organic nutrients for their organic requirements but use sunlight as their primary energy source; examples include certain PURPLE NONSULFUR BACTERIA. Depending on environmental conditions some organisms can switch between different nutritional modes (AUTOTROPHY; HETEROTROPHY; chemotrophy; or phototrophy) to utilize different sources to meet their nutrients and energy requirements.Technical ReportGlutathione: A tripeptide with many roles in cells. It conjugates to drugs to make them more soluble for excretion, is a cofactor for some enzymes, is involved in protein disulfide bond rearrangement and reduces peroxides.United States National Aeronautics and Space Administration: An independent Federal agency established in 1958. It conducts research for the solution of problems of flight within and outside the Earth's atmosphere and develops, constructs, tests, and operates aeronautical and space vehicles. (From U.S. Government Manual, 1993)Glutathione Reductase: Catalyzes the oxidation of GLUTATHIONE to GLUTATHIONE DISULFIDE in the presence of NADP+. Deficiency in the enzyme is associated with HEMOLYTIC ANEMIA. Formerly listed as EC 1.6.4.2.Glutathione Transferase: A transferase that catalyzes the addition of aliphatic, aromatic, or heterocyclic FREE RADICALS as well as EPOXIDES and arene oxides to GLUTATHIONE. Addition takes place at the SULFUR. It also catalyzes the reduction of polyol nitrate by glutathione to polyol and nitrite.Cataloging: Activities performed in the preparation of bibliographic records for CATALOGS. It is carried out according to a set of rules and contains information enabling the user to know what is available and where items can be found.Value of Life: The intrinsic moral worth ascribed to a living being. (Bioethics Thesaurus)Symbiosis: The relationship between two different species of organisms that are interdependent; each gains benefits from the other or a relationship between different species where both of the organisms in question benefit from the presence of the other.Plastids: Self-replicating cytoplasmic organelles of plant and algal cells that contain pigments and may synthesize and accumulate various substances. PLASTID GENOMES are used in phylogenetic studies.Eukaryota: One of the three domains of life (the others being BACTERIA and ARCHAEA), also called Eukarya. These are organisms whose cells are enclosed in membranes and possess a nucleus. They comprise almost all multicellular and many unicellular organisms, and are traditionally divided into groups (sometimes called kingdoms) including ANIMALS; PLANTS; FUNGI; and various algae and other taxa that were previously part of the old kingdom Protista.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).Sea Urchins: Somewhat flattened, globular echinoderms, having thin, brittle shells of calcareous plates. They are useful models for studying FERTILIZATION and EMBRYO DEVELOPMENT.Thiotrichaceae: A family of colorless sulfur bacteria in the order Thiotrichales, class GAMMAPROTEOBACTERIA.Mycoplasma: A genus of gram-negative, mostly facultatively anaerobic bacteria in the family MYCOPLASMATACEAE. The cells are bounded by a PLASMA MEMBRANE and lack a true CELL WALL. Its organisms are pathogens found on the MUCOUS MEMBRANES of humans, ANIMALS, and BIRDS.Radiation: Emission or propagation of acoustic waves (SOUND), ELECTROMAGNETIC ENERGY waves (such as LIGHT; RADIO WAVES; GAMMA RAYS; or X-RAYS), or a stream of subatomic particles (such as ELECTRONS; NEUTRONS; PROTONS; or ALPHA PARTICLES).NAD: A coenzyme composed of ribosylnicotinamide 5'-diphosphate coupled to adenosine 5'-phosphate by pyrophosphate linkage. It is found widely in nature and is involved in numerous enzymatic reactions in which it serves as an electron carrier by being alternately oxidized (NAD+) and reduced (NADH). (Dorland, 27th ed)Equilibrative Nucleoside Transport Proteins: A class of sodium-independent nucleoside transporters that mediate the facilitative transport of NUCLEOSIDES.Mycoplasma Infections: Infections with species of the genus MYCOPLASMA.Equilibrative Nucleoside Transporter 1: A subtype of equilibrative nucleoside transporter proteins that is sensitive to inhibition by 4-nitrobenzylthioinosine.DNA-Directed RNA Polymerases: Enzymes that catalyze DNA template-directed extension of the 3'-end of an RNA strand one nucleotide at a time. They can initiate a chain de novo. In eukaryotes, three forms of the enzyme have been distinguished on the basis of sensitivity to alpha-amanitin, and the type of RNA synthesized. (From Enzyme Nomenclature, 1992).Thermus: Gram-negative aerobic rods found in warm water (40-79 degrees C) such as hot springs, hot water tanks, and thermally polluted rivers.Promoter Regions, Genetic: DNA sequences which are recognized (directly or indirectly) and bound by a DNA-dependent RNA polymerase during the initiation of transcription. Highly conserved sequences within the promoter include the Pribnow box in bacteria and the TATA BOX in eukaryotes.Transcription, Genetic: The biosynthesis of RNA carried out on a template of DNA. The biosynthesis of DNA from an RNA template is called REVERSE TRANSCRIPTION.RNA Polymerase Sigma 54: A DNA-directed RNA polymerase found in BACTERIA. It is a holoenzyme that consists of multiple subunits including sigma factor 54.RNA Polymerase II: A DNA-dependent RNA polymerase present in bacterial, plant, and animal cells. It functions in the nucleoplasmic structure and transcribes DNA into RNA. It has different requirements for cations and salt than RNA polymerase I and is strongly inhibited by alpha-amanitin. EC 2.7.7.6.Seasons: Divisions of the year according to some regularly recurrent phenomena usually astronomical or climatic. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Baltic States: The collective name for the republics of ESTONIA; LATVIA; and LITHUANIA on the eastern shore of the Baltic Sea. (Webster's New Geographical Dictionary, 1988, p111)Biodiversity: The variety of all native living organisms and their various forms and interrelationships.Sequence Analysis, DNA: A multistage process that includes cloning, physical mapping, subcloning, determination of the DNA SEQUENCE, and information analysis.

Combination of fluorescent in situ hybridization and microautoradiography-a new tool for structure-function analyses in microbial ecology. (1/146)

A new microscopic method for simultaneously determining in situ the identities, activities, and specific substrate uptake profiles of individual bacterial cells within complex microbial communities was developed by combining fluorescent in situ hybridization (FISH) performed with rRNA-targeted oligonucleotide probes and microautoradiography. This method was evaluated by using defined artificial mixtures of Escherichia coli and Herpetosiphon aurantiacus under aerobic incubation conditions with added [3H]glucose. Subsequently, we were able to demonstrate the potential of this method by visualizing the uptake of organic and inorganic radiolabeled substrates ([14C]acetate, [14C]butyrate, [14C]bicarbonate, and 33Pi) in probe-defined populations from complex activated sludge microbial communities by using aerobic incubation conditions and anaerobic incubation conditions (with and without nitrate). For both defined cell mixtures and activated sludge, the method proved to be useful for simultaneous identification and analysis of the uptake of labeled substrates under the different experimental conditions used. Optimal results were obtained when fluorescently labeled oligonucleotides were applied prior to the microautoradiographic developing procedure. For single-cell resolution of FISH and microautoradiographic signals within activated sludge flocs, cryosectioned sample material was examined with a confocal laser scanning microscope. The combination of in situ rRNA hybridization techniques, cryosectioning, microautoradiography, and confocal laser scanning microscopy provides a unique opportunity for obtaining cultivation-independent insights into the structure and function of bacterial communities.  (+info)

Sepiapterin reductase producing L-threo-dihydrobiopterin from Chlorobium tepidum. (2/146)

A novel type of NADPH-dependent sepiapterin reductase, which catalysed uniquely the reduction of sepiapterin to l-threo-dihydrobiopterin, was purified 533-fold from the cytosolic fraction of Chlorobium tepidum, with an overall yield of 3%. The native enzyme had a molecular mass of 55 kDa and SDS/PAGE revealed that the enzyme consists of two subunits with a molecular mass of 26 kDa. The enzyme was optimally active at pH8.8 and 50 degrees C. Apparent Km values for sepiapterin and NADPH were 21 and 6.2 microM, respectively, and the kcat value was 5.0 s-1. Diacetyl could also serve as a substrate, with a Km of 4.0 mM. The inhibitory effects of N-acetylserotonin, N-acetyldopamine and melatonin were very weak. The Ki value of N-acetyldopamine was measured as 400 microM. The N-terminal amino acid sequence was revealed as Met-Lys-His-Ile-Leu-Leu-Ile-Thr-Gly-Ala-Xaa-Lys - Lys - Ile - Xaa - Arg - Ala - Ile - Ala - Leu - Glu - Xaa - Ala - Arg - Xaa-Xaa-Xaa-His-His-His-, which shared relatively high sequence similarity with other sepiapterin reductases.  (+info)

Auracyanin A from the thermophilic green gliding photosynthetic bacterium Chloroflexus aurantiacus represents an unusual class of small blue copper proteins. (3/146)

The amino acid sequence of the small copper protein auracyanin A isolated from the thermophilic photosynthetic green bacterium Chloroflexus aurantiacus has been determined to be a polypeptide of 139 residues. His58, Cys123, His128, and Met132 are spaced in a way to be expected if they are the evolutionary conserved metal ligands as in the known small copper proteins plastocyanin and azurin. Secondary structure prediction also indicates that auracyanin has a general beta-barrel structure similar to that of azurin from Pseudomonas aeruginosa and plastocyanin from poplar leaves. However, auracyanin appears to have sequence characteristics of both small copper protein sequence classes. The overall similarity with a consensus sequence of azurin is roughly the same as that with a consensus sequence of plastocyanin, namely 30.5%. We suggest that auracyanin A, together with the B forms, is the first example of a new class of small copper proteins that may be descendants of an ancestral sequence to both the azurin proteins occurring in prokaryotic nonphotosynthetic bacteria and the plastocyanin proteins occurring in both prokaryotic cyanobacteria and eukaryotic algae and plants. The N-terminal sequence region 1-18 of auracyanin is remarkably rich in glycine and hydroxy amino acids, and required mass spectrometric analysis to be determined. The nature of the blocking group X is not yet known, although its mass has been determined to be 220 Da. The auracyanins are the first small blue copper proteins found and studied in anoxygenic photosynthetic bacteria and are likely to mediate electron transfer between the cytochrome bc1 complex and the photosynthetic reaction center.  (+info)

Exciton delocalization in the B808-866 antenna of the green bacterium Chloroflexus aurantiacus as revealed by ultrafast pump-probe spectroscopy. (4/146)

A model of pigment organization in the B808-866 bacteriochlorophyll a antenna of the green photosynthetic bacterium Chloroflexus aurantiacus based on femtosecond pump-probe studies is proposed. The building block of the antenna was assumed to be structurally similar to that of the B800-850 light-harvesting 2 (LH2) antenna of purple bacteria and to have the form of two concentric rings of N strongly coupled BChl866 pigments and of N/2 weakly coupled BChl808 monomers, where N = 24 or 32. We have shown that the Qy transition dipoles of BChl808 and BChl866 molecules form the angles 43 degrees +/- 3 degrees and 8 degrees +/- 4 degrees, respectively, with the plane of the corresponding rings. Using the exciton model, we have obtained a quantitative fit of the pump-probe spectra of the B866 and B808 bands. The anomalously high bleaching value of the B866 band with respect to the B808 monomeric band provided the direct evidence for a high degree of exciton delocalization in the BChl866 ring antenna. The coherence length of the steady-state exciton wave packet corresponds to five or six BChl866 molecules at room temperature.  (+info)

In situ analysis of sulfur in the sulfur globules of phototrophic sulfur bacteria by X-ray absorption near edge spectroscopy. (5/146)

During the oxidation of sulfide and thiosulfate purple and green sulfur bacteria accumulate globules of 'elemental' sulfur. Although essential for a thorough understanding of sulfur metabolism in these organisms, the exact chemical nature of the stored sulfur is still unclear. We applied sulfur K-edge X-ray absorption near edge spectroscopy (XANES) to probe the forms of sulfur in intact cells. Comparing XANES spectra of Allochromatium vinosum, Thiocapsa roseopersicina, Marichromatium purpuratum, Halorhodospira halophila and Chlorobium vibrioforme grown photolithoautotrophically on sulfide with reference probes (fingerprint method), we found sulfur chains with the structure R-S(n)-R. Evidence for the presence of sulfur rings, polythionates and anionic polysulfides in the sulfur globules of these bacteria was not obtained.  (+info)

Exciton levels structure of antenna bacteriochlorophyll c aggregates in the green bacterium Chloroflexus aurantiacus as probed by 1.8-293 K fluorescence spectroscopy. (6/146)

We have demonstrated temperature-dependence of the steady-state fluorescence lineshape of the bacteriochlorophyll (BChl) c band measured for intact cells of the green bacterium Chloroflexus aurantiacus over the 1.8-293 K range. The measured temperature-dependence has been shown to be in good agreement with the theoretical one, calculated for our original model of pigment organization in the chlorosomal oligomeric antenna of green photosynthetic bacteria based on spectral hole-burning studies (Fetisova, Z.G. et al. (1996) Biophys. J. 71, 995-1010). This model implies that the BChl c antenna unit is a tubular aggregate of six exciton-coupled linear pigment chains having the exciton level structure with strongly allowed higher levels.  (+info)

Rubredoxin from the green sulfur bacterium Chlorobium tepidum functions as an electron acceptor for pyruvate ferredoxin oxidoreductase. (7/146)

Rubredoxin (Rd) from the moderately thermophilic green sulfur bacterium Chlorobium tepidum was found to function as an electron acceptor for pyruvate ferredoxin oxidoreductase (PFOR). This enzyme, which catalyzes the conversion of pyruvate to acetyl-CoA and CO(2), exhibited an absolute dependence upon the presence of Rd. However, Rd was incapable of participating in the pyruvate synthase or CO(2) fixation reaction of C. tepidum PFOR, for which two different reduced ferredoxins are employed as electron donors. These results suggest a specific functional role for Rd in pyruvate oxidation and provide the initial indication that the two important physiological reactions catalyzed by PFOR/pyruvate synthase are dependent on different electron carriers in the cell. The UV-visible spectrum of oxidized Rd, with a monomer molecular weight of 6500, gave a molar absorption coefficient at 492 nm of 6.89 mM(-1) cm(-1) with an A(492)/A(280) ratio of 0.343 and contained one iron atom/molecule. Further spectroscopic studies indicated that the CD spectrum of oxidized C. tepidum Rd exhibited a unique absorption maximum at 385 nm and a shoulder at 420 nm. The EPR spectrum of oxidized Rd also exhibited unusual anisotropic resonances at g = 9.675 and g = 4.322, which is composed of a narrow central feature with broader shoulders to high and low field. The midpoint reduction potential of C. tepidum Rd was determined to be -87 mV, which is the most electronegative value reported for Rd from any source.  (+info)

Exogenous quinones inhibit photosynthetic electron transfer in Chloroflexus aurantiacus by specific quenching of the excited bacteriochlorophyll c antenna. (8/146)

In the photosynthetic green filamentous bacterium Chloroflexus aurantiacus, excitation energy is transferred from a large bacteriochlorophyll (BChl) c antenna via smaller BChl a antennas to the reaction center. The effects of substituted 1,4-naphthoquinones on BChl c and BChl a fluorescence and on flash-induced cytochrome c oxidation were studied in whole cells under aerobic conditions. BChl c fluorescence in a cell suspension with 5.4 microM BChl c was quenched to 50% by addition of 0.6 microM shikonin ((R)-2-(1-hydroxy-4-methyl-3-pentenyl)-5,8-dihydroxy-1, 4-naphthoquinone), 0.9 microM 5-hydroxy-1,4-naphthoquinone, or 4 microM 2-acetyl-3-methyl-1,4-naphthoquinone. Between 25 and 100 times higher quinone concentrations were needed to quench BChl a fluorescence to a similar extent. These quinones also efficiently inhibited flash-induced cytochrome c oxidation when BChl c was excited, but not when BChl a was excited. The quenching of BChl c fluorescence induced by these quinones correlated with the inhibition of flash-induced cytochrome c oxidation. We concluded that the quinones inhibited electron transfer in the reaction center by specifically quenching the excitation energy in the BChl c antenna. Our results provide a model system for studying the redox-dependent antenna quenching in green sulfur bacteria because the antennas in these bacteria inherently exhibit a sensitivity to O(2) similar to the quinone-supplemented cells of Cfx. aurantiacus.  (+info)

The green sulfur bacteria are a family of obligately anaerobic photoautotrophic bacteria. Most closely related to the distant Bacteroidetes, they are accordingly assigned their own phylum.[1] Green sulfur bacteria are nonmotile (except Chloroherpeton thalassium, which may glide)[1] and occur in spheres, rods, and spirals.[citation needed] Photosynthesis is achieved using a Type 2[citation needed] Reaction Centre using bacteriochlorophyll (BChl) a and in chlorosomes which employ BChl c, d, or e; in addition chlorophyll a is also present,.[1] They use sulfide ions, hydrogen or ferrous iron as an electron donor and the process is mediated by the type I reaction centre and Fenna-Matthews-Olson complex. Elemental sulfur deposited outside the cell may be further oxidized. By contrast, the photosynthesis in plants uses water as the electron donor and produces oxygen.[1] Chlorobium tepidum has emerged as a model organism for the group; although only 10 genomes have been sequenced, these are quite ...
ID B3EM59_CHLPB Unreviewed; 996 AA. AC B3EM59; DT 22-JUL-2008, integrated into UniProtKB/TrEMBL. DT 22-JUL-2008, sequence version 1. DT 20-DEC-2017, entry version 67. DE SubName: Full=FAD-dependent pyridine nucleotide-disulphide oxidoreductase {ECO:0000313,EMBL:ACE03437.1}; GN OrderedLocusNames=Cphamn1_0473 {ECO:0000313,EMBL:ACE03437.1}; OS Chlorobium phaeobacteroides (strain BS1). OC Bacteria; Chlorobi; Chlorobia; Chlorobiales; Chlorobiaceae; OC Chlorobium/Pelodictyon group; Chlorobium. OX NCBI_TaxID=331678 {ECO:0000313,EMBL:ACE03437.1, ECO:0000313,Proteomes:UP000001228}; RN [1] {ECO:0000313,EMBL:ACE03437.1, ECO:0000313,Proteomes:UP000001228} RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=BS1 {ECO:0000313,EMBL:ACE03437.1, RC ECO:0000313,Proteomes:UP000001228}; RG US DOE Joint Genome Institute; RA Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., RA Tice H., Bruce D., Goodwin L., Pitluck S., Schmutz J., Larimer F., RA Land M., Hauser L., Kyrpides N., Ovchinnikova G., ...
Green photosynthetic bacteria adjust the structure and functionality of the chlorosome - the light absorbing antenna complex - in response to environmental stress factors. The chlorosome is a natural self-assembled aggregate of bacteriochlorophyll (BChl) molecules. In this study we report the regulation of the biogenesis of the Chlorobaculum tepidum chlorosome by carbon assimilation in conjunction with temperature changes. Our studies indicate that the carbon source and thermal stress culture of Cba. tepidum grows slower and incorporates less BChl c in the chlorosome. Compared with the chlorosome from other cultural conditions we investigated, the chlorosome from the carbon source and thermal stress culture displays: (a) smaller cross-sectional radius and overall size; (b) simplified BChl c homologues with smaller side chains; (c) blue-shifted Qy absorption maxima and (d) a sigmoid-shaped circular dichroism (CD) spectra. Using a theoretical model we analyze how the observed spectral ...
Photic zone euxinia (PZE) has proven important for elucidating biogeochemical changes that occur during oceanic anoxic events, including mass extinction and conditions associated with unique fossil preservation. Organic geochemical analyses of a 380 Ma invertebrate fossil, which included well-preserved soft tissues, from the Gogo Formation (Canning Basin, Western Australia) showed biomarkers and stable isotopic values characteristic of PZE and a consortium of sulfate-reducing bacteria, which lead to exceptional fossil and biomarker preservation. The carbonate concretion contained phytoplankton, green sulfur bacteria (Chlorobi), and sulfate-reducing bacteria biomarkers with an increasing concentration toward the nucleus where the fossil is preserved. The spatial distribution of cholestane unequivocally associated with the fossilized tissue and its high relative abundance to the total steranes suggest that the fossil is a crustacean. The presence of an active sulfur cycle in this Devonian system, ...
ID B4SA19_PELPB Unreviewed; 917 AA. AC B4SA19; DT 23-SEP-2008, integrated into UniProtKB/TrEMBL. DT 23-SEP-2008, sequence version 1. DT 07-JUN-2017, entry version 48. DE SubName: Full=Uncharacterized protein {ECO:0000313,EMBL:ACF43715.1}; GN OrderedLocusNames=Ppha_1462 {ECO:0000313,EMBL:ACF43715.1}; OS Pelodictyon phaeoclathratiforme (strain DSM 5477 / BU-1). OC Bacteria; Chlorobi; Chlorobia; Chlorobiales; Chlorobiaceae; OC Chlorobium/Pelodictyon group; Pelodictyon. OX NCBI_TaxID=324925 {ECO:0000313,EMBL:ACF43715.1, ECO:0000313,Proteomes:UP000002724}; RN [1] {ECO:0000313,EMBL:ACF43715.1, ECO:0000313,Proteomes:UP000002724} RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=DSM 5477 / BU-1 {ECO:0000313,Proteomes:UP000002724}; RG US DOE Joint Genome Institute; RA Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., RA Tice H., Bruce D., Goodwin L., Pitluck S., Schmutz J., Larimer F., RA Land M., Hauser L., Kyrpides N., Mikhailova N., Liu Z., Li T., RA Zhao F., Overmann J., ...
Niebla limicola is a fruticose lichen that grows on barren mud flats and on sand among salt scrub along the Pacific Coast of the Vizcaíno Desert, of Baja California from San Vicente Canyon to Scammons Lagoon (Guerrero Negro). The epithet, limicola is in reference to the thallus growing on barren (alkali) soil. Niebla limicola is distinguished by a hemispherical thallus lying loose on soil without a central holdfast (terricolous), divided into variously shaped branches, partly narrow in length and prismatic in cross section, and partly flattened and dilated from which short acicular bifurcating branchlets arise, the thallus up to 10 cm high and 15 cm across. The species (N. limicola) also recognized by containing salazinic acid (without triterpenes), and by a relatively thin cortex, (0-)45-75 µm thick, appearing to erode on dilated parts of branches; the thinner cortex evidently related to the contorted appearance of the branches in addition to the medulla being partly hollow (fistulose). The ...
Planning a kids party? Look no further than GigMasters to find and book the best local kids party entertainers and vendors in Green Sulphur Springs, WV. Get started today!
Discover Lifes page about the biology, natural history, ecology, identification and distribution of Colias nastes - Artic Green Sulfur -- Discover Life mobile
Lineage: cellular organisms; Bacteria; FCB group; Bacteroidetes/Chlorobi group; Bacteroidetes; Cytophagia; Cytophagales; Hymenobacteraceae; Hymenobacter; Hymenobacter ...
Lineage: cellular organisms; Bacteria; FCB group; Bacteroidetes/Chlorobi group; Bacteroidetes; Flavobacteriia; Flavobacteriales; Flavobacteriaceae; Mariniflexile; unclassified ...
Leveraging the strength of our DARs and senior engineering staff, MANNARINO is well positioned to provide EEDA support to our clients for both RTCA/DO-178B/C and RTCA/DO-254.. Working closely with our customers design assurance organization, our engineering staff supports EEDA activities through the review of life cycle data and the execution of desk and/or on-site supplier Stage of Involvement (SOI) audits. Reporting and compliance is executed per our customers approved EEDA processes to ensure a seamless execution of tasks.. ...
Chloroflexus aurantiacus is a photosynthetic bacterium isolated from hot springs, belonging to the green non-sulfur bacteria. This organism is thermophilic and can grow at temperatures from 35 °C to 70 °C. Chloroflexus aurantiacus can survive in the dark if oxygen is available. When grown in the dark, Chloroflexus aurantiacus has a dark orange color. When grown in sunlight it is dark green. The individual bacteria tend to form filamentous colonies enclosed in sheaths, which are known as trichomes. As a genus, Chloroflexus spp. are filamentous anoxygenic phototrophic (FAP) organisms that utilize type II photosynthetic reaction centers containing bacteriochlorophyll a similar to the purple bacteria, and light-harvesting chlorosomes containing bacteriochlorophyll c similar to green sulfur bacteria of the Chlorobi. Like other members of its phylum (cf. Chloroflexi), the species stains Gram negative, yet has a single lipid layer (monoderm), but with thin peptidoglycan, which is compensated for by ...
The Yellowstone National Park Research Coordination Network is a collaboration of scientists and NPS staff to develop a coordinated research network focused on geothermal biology and geochemistry.
The Yellowstone National Park Research Coordination Network is a collaboration of scientists and NPS staff to develop a coordinated research network focused on geothermal biology and geochemistry.
Photophosphorylation in vivo by Chlorobium limicola was inhibited by lipophilic cations and the energy-transfer inhibitors diphenylphosphorylazide, Dio-9, 4-chloro-7-nitrobenzofurazan and chlorhexidene. Membrane-bound ATPase activity was also inhibited by these energy-transfer inhibitors. The formation of a membrane potential was stimulated approximately 1.7-fold on illumination, rising to a value between −110 and −150 mV. The sensitivity of the processes producing this membrane potential to uncouplers, energy-transfer inhibitors and 2-heptyl-4-hydroxyquinoline-N-oxide was measured in the light and the dark.
Chloroflexus aurantiacus ATCC ® 29366D-5™ Designation: Genomic DNA from Chloroflexus aurantiacus strain J-10-fl TypeStrain=True Application:
Ras of complex proteins (Roc) is a Ras-like GTP binding domain that always occurs in tandem with the C-terminal of Roc (COR) domain, and is found in bacteria, plants and animals. Recently, it has been shown that Roco proteins belong to the family of G-proteins activated by nucleotide-dependent dimerization (GADs). We investigated the RocCOR tandem from the bacteria Chlorobium tepidum with site-directed spin labeling and pulse EPR distance measurements to follow conformational changes during the Roco G-protein cycle. Our results confirm that the COR domains are a stable dimerization device serving as a scaffold for the Roc domains, that in contrast are structurally heterogeneous and dynamic entities. Contrary to other GAD proteins, we observed only minor structural alterations upon binding and hydrolysis of GTP, indicating significant mechanistic variations within this protein class. Mutations in the most prominent member of the Roco family of proteins, leucine-rich repeat kinase 2 (LRRK2), are ...
1)Washington University in St. Louis. "Taco Shell Protein: Orientation Of Antenna Protein In Photosynthetic Bacteria Described." ScienceDaily 9 April 2009. 12 April 2009 ,http://www.sciencedaily.com¬ /releases/2009/04/090402171438.htm,. ( 2)D.A. Bryant & N.-U. Frigaard (November 2006). "Prokaryotic photosynthesis and phototrophy illuminated". Trends Microbiol. 14 (11): 488. doi:10.1016/j.tim.2006.09.001 (3)Beatty, J.T.; Overmann, J.; Lince, M.T.; Mansket, A.K.; Lang, A.S.; Blankenship, R.E.; Van Dover, C.L.; Martinson, T.A.; Plumley, F.G. " An obligately photosynthetic bacterial anaerobe from a deep-sea hydrothermal vent". PNAS June 28, 2005 vol. 102 no. 26 9306-9310 (4)Li YF, Zhou W, Blankenship RE, Allen JP (1997) Crystal structure of the bacteriochlorophyll a protein from Chlorobium tepidum. J Mol Biol 271:456-471. (5)Olson, J. M. (1978). Bacteriochlorophyll a-proteins from green bacteria. In The Photosynthetic Bacteria (Clayton, R. K. & Sistrom, W. R., eds), pp. 161± 178, Plenum Press, ...
Natural photosynthetic pigments bacteriochlorophyllsc, d and e in green bacteria undergo self-assembly to create an organized antenna system known as the chlorosome, which collects photons and funnels the resulting excitation energy toward the reaction centers. Mimicry of chlorosome function is a central pro
Local Green Sulphur Springs West Virginia moving companies offer moving labor service including load and unload help. Hire best movers and helpers after comparing rates and reviews in your area.
To search for genetic clues to carbon and energy metabolism in Crenarchaeota, the researchers extracted C. symbiosum DNA from its host sponge and constructed a DNA library for sequencing the symbiont s genome. Hallam et al. then searched for representative genes linked to pathways associated with autotrophic carbon assimilation. They found many components of two pathways: the 3-hydroxypropionate cycle and the reductive tricarboxylic acid (citric acid) pathway (TCA). Both cycles involve a multistep series of chemical reactions that convert inorganic compounds in this case, carbon dioxide into organic carbon molecules. Though some components of the 3-hydroxypropionate cycle were missing in C. symbiosum, enough elements (including core proteins) were found to support a modified version of this pathway for carbon assimilation, using carbon dioxide ...
Fossilized organic molecules of green sulfur bacteria are helping to u...The fossils were found in sedimentary rock commonly used to make ho...The findings are reported in the May issue of the journal Geology (...Kenig and his colleagues have spent almost 15 years trying to le... It should have been one or the other said Kenig. You cant have...,Seabed,secrets,in,English,clay,biological,biology news articles,biology news today,latest biology news,current biology news,biology newsletters
said Pennsylvania State University Professor Donald Bryant, one of the teams leaders. Bryant said green bacteria are a group of organisms that generally live in extremely low-light environments, such as in light-deprived regions of hot springs and at depths of about 325 feet in the Black Sea.. The bacteria contain structures called chlorosomes, which contain up to 250,000 chlorophylls.. ...
Graphical view by InterProScan indicates a graphical display of the arrangment of the predicted domains by InterProScan.. show/hide icon is a toggle switch to show or hide the graphical display.. PNG icon indicates the link of the PNG file of the graphical display. Table view by InterProScan indicates the summary table of the InterProScan prediction. Each InterPro ID indicates the link to the InterPro entry. [S] links to the list of genes which predicted the InterPro ID (Chlorobium species-wise prediction). [D] links to the list of genes which predicted the InterPro ID (cyanobase dataset-wise prediction). GO terms indicate the link to the GO entry. show/hide icon is a toggle switchto show or hide the table.. TableView icon indicates the link of the table page.. GFF3 icon indicates the link of the GFF file of the InterProScan prediction. Transmembrane regions predicted by SOSUI indicates the SOSUI predicted regions. Go SOSUI bottun link to the SOSUI prediction. ...
Download this Research On The Green Bacteria photo now. And search more of the webs best library of royalty-free stock images from iStock.
Primary photochemistry in the facultatively aerobic green photosynthetic bacterium Chloroflexus aurantiacus: Photochemical activity was examined in membrane fra
Our comparative survey of five red-layer communities in Yellowstone National Park suggests the presence of a diverse and distinct group of uncultured GNS-like bacteria, the closest known isolate of which is R. castenholzii, a red filamentous Bchl a-only-containing bacterium from a similar hot springs in Japan. This hypothesis was supported by16S rRNA phylogenetic studies, in vivo Bchl a absorption spectra comparisons, and morphologic assessment of each mat red-layer sample.. Within this new red GNS cluster, two distinct and well-supported phylogenetic subclusters emerge: YRL-A was most similar to Roseiflexus, and YRL-B was most similar to two unclassified 16S rRNA sequences originally retrieved from Octopus Spring, Yellowstone National Park (27). A potential third cluster that contains all Spray Geyser GNS-like clones represents a well-supported subgroup within YRL-B. While our analyses were based on a somewhat limited character set (353 usable characters out of 980 aligned positions), we ...
Fleming has compared 2-D electronic spectroscopy to the technique used in the early super-heterodyne radios, where an incoming high frequency radio signal was converted by an oscillator to a lower frequency for more controllable amplification and better reception. In the case of 2-D electronic spectroscopy, scientists can track the transfer of energy between molecules that are coupled (connected) through their electronic and vibrational states in any photoactive system, macromolecular assembly or nanostructure.. Fleming and his group first described 2-D electronic spectroscopy in a 2005 Nature paper, when they used the technique to observe electronic couplings in the Fenna-Matthews-Olson (FMO) photosynthetic light-harvesting protein, a molecular complex in green sulphur bacteria. Said Engel, "The 2005 paper was the first biological application of this technique, now we have used 2-D electronic spectroscopy to discover a new phenomenon in photosynthetic systems. While the possibility that ...
This methylase recognizes the double-stranded sequence GRCGYC, causes specific methylation on C-? on both strands, and protects the DNA from cleavage by the HgiDI endonuclease.
Work the world without a beam, tower or linear amplifier!. Permission problems, intolerant neighbors, and apartment restrictions are just some of the personal challenges Amateur Radio operators face when trying to get on the air. This second edition of Stealth Antennas has been expanded and updated, providing clear, practical advice on addressing these problems. Youll enjoy hints, tips and antenna solutions tailored to help you can get your signal out.. Designs featured in this book include magnetic loops, tuned wire loops, small verticals, zig-zag loaded dipoles and wire antennas. Also includes electrical and other safety issues, external antennas, reviews of commercially made stealth antennas, ways to work DX with a modest station, maximizing efficiency, tips to avoid interference and more. Includes: ...
Since the directive gain of an antenna is the far field in the forward direction divided by the average far field it is possible to obtain antennas with maximum gain by looking for designs that have minimum for the average far field, provided that the radiation pattern is properly normalised. Rather than looking for maximum of one function (gain) one looks for the minimum of the sum of the squares of many simultaneous functions - radiated power is the square of the electric field. In this way convergency is obtained, and true maximum gain yagis can be designed within the simulation model chosen. For a detailed description see Computer Design of Very High Gain Yagi Antennas. Here the method applied is a computer program from about 1972 by Kuo and Strait, that uses piecewise linear current functions on the elements, and that does not take end capacitances into account. Nevertheless this method can be used to construct real antennas with very good performance, and I have used it to design my ...
Absorption spectra of BChl a-associated proteins from various C. tepidum strains recovered by Ni2+-affinity purification.Absorption spectra (traces 1-6) of BChl
Catalyzes the phosphorylation of D-fructose 6-phosphate to fructose 1,6-bisphosphate by ATP, the first committing step of glycolysis.
Personal Recommendations: A recommendation from someone that just recently worked with a wedding celebration professional photographer is a great start. Who would recognize far better about discover the very best than an individual that employed one.. Google And Other Online search engine:. A quick search on any one of the major internet search engine will certainly produce a mind numbing quantity of options. For example, if you type into Google the search terms "Wedding celebration Digital photographer" it will return millions outcomes. Just undergoing each result would certainly take you years, so as a general rule of thumb, stick with those on page 1 or web page 2. The reason for this is basic: If they are on web page 1 or 2 then they have actually made the effort to make sure that their site is well developed, maximized as well as placed, to guarantee that their products or services are simple to find for possible Couple.. Picking A Professional photographer. As quickly as you have selected ...
In our discussion of the gliding bacteria (this Handbook, Chapter 19), we have proposed an alternative classification to that in Bergeys Manual of Determinative Bacteriology, eighth edition. In...
The invention teaches improved, novel methods and materials for the production of antennas. The invention contemplates the use of Directly Electroplateable Resins for the production of these antennas. The unique suitability of Directly Electroplateable Resins to allow facile manufacture of the antennas desired using a broad range of processing and manufacturing approaches is demonstrated.
The book Modern Small Antennas is smart to access matches by feed not. cancer re-write; USCIS Genealogy network; sheet to see management age; and pushback; applicable talk patients. General FeedbackVisit the Feedback Opportunities book Modern Small Antennas to determine your courses and minutes with USCIS.
In the area of ​​yellow color, we find sulfur oxidizing bacteria, which use carbon as a source of organic matter. Find oxygen (bubbles) and hydrogen sulfide. Orange areas is due to the presence of red non-sulfur bacteria, in the presence of organic carbon source gives it color. The shades of light red color is due to the presence of red sulfur bacteria. In this area we find O2 as they use as reducing the H2S and generate sulfates. ...
Molexs Industrial, Scientific and Medical (ISM) Antennas combine high RF performance with ease of integration over 433, 868 and 915 MHz bands for advanced devices.
Calibration is an important tool for ensuring quality and determining uncertainty in final measurements. The basis of this process consists of continuous calibration of the antennas.
Shop from the world's largest selection and best deals for TP-Link Wi-Fi Boosters, Extenders and Antennas. Shop with confidence on eBay!
Technology Networks is an internationally recognised publisher that provides access to the latest scientific news, products, research, videos and posters.
Specifications are provided by the manufacturer. Refer to the manufacturer for an explanation of print speed and other ratings ...
This domain of about 175 to 200 amino acids is found, in from one to five copies, in over 50 proteins in Fibrobacter succinogenes S85, an obligate anaerobe of the rumen. Many members of this family have an apparent lipoprotein signal sequence. Conserved cysteine residues, suggestive of disulfide bond formation, are also consistent with an extracytoplasmic location for this domain. This domain can also be found in small numbers of proteins in Chlorobium tepidum and Bacteroides thetaiotaomicron ...
1 Report of okenane as a hydrogenation product of okenone after H2/PtO2 treatment of a polar fraction extracted from a Recent lake sediment 2 Also including a large variety of di- to pentacyclic early diagenetic cyclization and rearrangement products of isorenieratene (Grice et al., 1996b, Koopmans et al., 1996a). 3 Only diagnostic for Chlorobiaceae if the carbon isotopic composition of individual arylisoprenoids shows an enrichment in 13C diagnostic of the reversed tricarboxylic acid cycle 4 According to Koopmans et al. (1996b), b-carotene can undergo aromatization during diagenesis to b-isorenieratane and further degradate to 2,3,6-TMAs 5 New trivial name suggested here (= perhydrorenierapurpurin) 6 New trivial name suggested here 7 TMA = trimethylarylisoprenoids. ...
A stretch of the Maumee River that runs through Toledo, Ohio has turned vivid green thanks to a bloom of cyanobacteria. The Toledo-Lucas County Health
The Correlator is a huge computer. It fills a complete room in the Technical Building at the Chajnantor Plateau, at 5,000 meters altitude. This building is the second highest building in the world. The computer at which you are reading this has only a few processors, but the ALMA Correlator has 134 million processors. Together, they carry out 17 trillion calculations every second. So in a sense, ALMAs brain is much more powerful than yours!. Why does ALMA need such a powerful brain? Its because combining the signals from the 66 antennas is very complicated. Its not like simply adding them together, as if you are adding 66 cups of water in a pan. If you would do that, the signals from ALMAs 66 eyes would get all mixed up. Yes, ALMA would still be very sensitive. After all, the 66 antennas have a total surface area as large as a football field, so together they collect a lot of millimeter waves. But the observatory would not be able to see very sharp.. ...
Purple and green bacteria and cyanobacteria are photosynthetic. Photosynthetic bacteria are able to produce energy from the suns rays in a process similar to that used by plants. Instead of using...
The design of a linear space-time code with full rate, large diversity product, and non-vanishing minimum determinant of codewords continues to attract great attention. However, in most available no-vanishing determinant space-time codes for three, four, and six transmitter antennas, the average pow.... Full description. ...
Antennas for the latest implanted medical devices are being developed by Queen Mary University of London and tested through a unique piece of kit at the UKs National Physical Laboratory (NPL).
Use the most plentiful protein on the planet-RuBisCO-to teach the DNA→RNA→protein pathway of molecular biology that also makes a connection to the global climate through attention to the carbon fixation pathways. The curriculum is concise and an excellent way to teach about current research methods in plant biology that cross over to animal and medical fields. It also provides insight into potential science careers. The curriculum is flexible so that you can use all or part of it to teach what works for you.. Highlights of full curriculum: ...
6-chloro-2H-chromene-3-carboxylic acid, 97%, Maybridge Amber Glass Bottle; 1g 6-chloro-2H-chromene-3-carboxylic acid, 97%, Maybridge Chlorobi to Chlorodimethoxy -Organics
Applications Synthetic organisms utilizing this revolutionary technology can offer higher carbon fixation rates as compared to natural alternatives allowing: Superior rate of biomass generation, providing cost effective feedstock for the production of biofuels. Enhanced food production via increased crop yields.Advantages Minimal thermodynamic bottlenecks and superior kinetics over natural counterparts.Technologys Essence
25 Years of Low Band Success!. The fifth edition features new and updated material. Highlights include a thoroughly revised discussion of receiving antennas. You ll discover how to greatly enhance their operational bandwidth. In addition, low-signal transformers for Beverages and other receive-only antennas are analyzed in great detail, along with effective common-mode filters.. a new examination of phased arrays, with new concepts such as the hybrid-fed 4-square array and opposite-voltage feed system. This is a must-read for every serious antenna builder!. dozens of new propagation maps based on DX Atlas, as well as an in-depth analysis of the influence of sunspot cycles on 160-meter ducting.. a new discussion of cutting edge technology including Software Defined Radio and the revolutionary LP-500 Digital Station Monitor. Contents: ...
I actually use the sun for aligning the antennas. SatPC32 comes with a program called SuM, which can point the antennas directly at the sun (or moon!). To align the antennas, I look at the shadow of the antennas on the ground, and adjust until the shadow is minimum size. Its really easy, (and you dont need to look at the sun to do this type of alignment). 73! Dave KB5WIA http://kb5wia.blogspot.com On Wed, Jul 17, 2013 at 8:29 PM, Rodney Waln ,kc0zhf at yahoo.com, wrote: , hi, well i will through my $0.2 in, for my home station to get as accurate as i can, , i listen for a satellite beacon on one of the SSBs set the radio to track and satpc32 to track, , have a radio or wireless mic and take an ht to the roof with me,when i hear the cw tone that sounds , ok i am set. then fine tune things from there, mind you i am at a 10* handicap do to thre hills around me, , so it takes a few tries, , i also do it almost the same way for or portable, but you get the idea, the FM sats are point and shoot, , ...
A Simple Comparative Evaluation of Adaptive Beam forming Algorithms G.C Nwalozie, V.N Okorogu, S.S Maduadichie, A. Adenola Abstract- Adaptive Antennas can be used to increase the capacity, the link quality
The Zoning Board of Adjustments recently approved the addition of three antennas to a 180-foot communications tower on Warner Hill Road despite the objections of several abutters.
2 MDA Corporation Mechanical Design Engineer for Space Antennas interview questions and 1 interview reviews. Free interview details posted anonymously by MDA Corporation interview candidates.
Gottstein, J. und Scheer, Hugo (1983): Long-wavelength-absorbing forms of bacteriochlorophyll a in solutions of Triton X-100. In: Proceedings of the National Academy of Sciences of the USA, Vol. 80: S. 1887-1892 ...
Chappaz-Gillot, Cyril; Marek, Peter L.; Blaive, Bruno J.; Canard, Gabriel; Bürck, Jochen; Garab, Győző; Hahn, Horst; Jávorfi, Tamás; Kelemen, Loránd; Krupke, Ralph; Mössinger, Dennis; Ormos, Pál; Reddy, Chilla Malla; Roussel, Christian; Steinbach, Gábor; Szabó, Milán; Ulrich, Anne S.; Vanthuyne, Nicolas; Vijayaraghavan, Aravind; Zupcanova, Anita; ... mehrBalaban, Teodor Silviu ...
Transmitted and received signals involving rotorcrafts are subject to intermodulations caused by the rotor blades. In this paper, the statistical characteristics of the wireless communication link between a rotorcraft transmitter and a receiver on the ground are developed. Both the scattering and Do.... Full description. ...
The subject of a Log for the station in Waite Hall was also mentioned, in order to keep track of who was in the station, and what may have done...equipment use, work on the antennas, etc ...
Find Radio Antennas in Electronics For Sale. New listings: Amateur Radio Ham Radio - TWO 2 Meter Station Master-type antennas - $350 (Lakeside), CB radio antennas - $75
This article describes the occurrence, structure,arrangement and function of bacterial intracytoplasmic membranes (ICMS) including magnetosomes of magnetotactic bacteria, the thylakoids of cyanobacteria and chloroxybacteria, the ICMS of purple bacteria and chemoautotrophic bacteria, the chlorosomes of green bacteria and the anammoxosome of ammonia‐oxidising bacteria
Optical antennas are widely used in surface-enhanced Ramon spectroscopy (SERS) because of their ability to focus light in sub-diffraction-limited area, resulting in strong field enhancement. The field enhancement depends critically on the gap spacing of optical antennas. Current nanofabrication techniques such as focused ion beam milling and electron beam lithography are limited by poor uniformity and reproducibility as the dimension decreases below 10 nm, making it difficult to fabricate optical antennas with well-defined sub-10 nm gap spacing. In this project, we report on the design and demonstration of new optical antennas with uniform sub-5nm gap spacing. Using deep-UV spacer lithography, the antenna gap is defined by a thin dielectric layer whose thickness is precisely controlled by atomic layer deposition (ALD). We have fabricated arch-dipole antennas with 5-nm gap spacing. Strong SERS signals from trans-1,2-bis (4-pyridyl) ethylene (BPE) molecules have been measured from the antennas, ...
It was May 1996 when we were walking in Alcobendas, Madrid, to find a place to enjoy a coffee. Once we got updated on personal matters, we were ready to jump into the scientific and technical issues that always light a spark with us. The topic that day was the capability of very tiny pieces of metal, deposited on a dielectric substrate, to resonate at optical frequency in the manner of the old-fashioned antenna. A research stay at the ETHZ in Switzerland showed that, besides the exotic application of optical frequency multiplication for time standard measurements, antennas could move upward in the frequency domain and get into the optical regime with awesome capabilities yet to be explored. This was probably the first conversation on optical antennas that we had. Since that walk, significant advances have been made in this field, and in some of them, the efforts made at the Infrared System Lab of CREOL (University of Central Florida), at the Applied Optics Complutense Group (Universidad ...
One of the most frequently asked questions is "Shouldnt the distance of the elements also change when changing element lengths?". To answer this question it is important to understand that Yagis can be designed to maximise different values. That can be max. gain, best Front/Back ratio, good bandwidth etc. But - these goals cannot be achieved all at once with the same design. Either you optimize a yagi for best gain, useful bandwidth and not so good F/B ratio. Or excellent F/B ratio at narrow bandwidth and mediocre gain etc. etc.. With a 3-element beam the optimum gain would be reached at a boom length of 0.4 λ. The best F/B ratio is achieved with a boom length of approx. 0.25 λ, but only at limited bandwidth. This results in 0.3 λ as a good compromise, with this it can be shown that a variable element length results in much greater effect than variable distance. Bandwidth is of no importance with a SteppIR antenna because the antenna can be adjusted to any operating frequency (within ...
Find a wide selection of Antennas at Winncom Technologies corp. We offer a wide range of ARC Wireless products like ARC Wireless 13 dBi Parity Panel Directional Antenna, 2.4 - 2.5 GHz Frequency range, Dimansions: 8.5x8.5x1.0 at affordable prices.
The protein is actually located in chlorosome. Transfer energy was calculated with hetero-atoms. This is solid state NMR model ...
Top ⭐ 26 reasons for Edimax BR-6475nD: 1. Has 802.11n WiFi connection 2. WiFi speed 3. external antennas 4. Has a built-in network firewall 5. Has dual band technology
ABSTRACT: Low frequency antennas provide us with the most critical challenge in small UAVs due to the limited available real estate on the platform. The primary objective of our Phase I research was to fill a critical technology gap in small UAVs for low frequency communication and SIGINT applications. We carried out a very comprehensive Phase I research to develop light-weight, conformal volumet .... ...
BrunchClust produces 7 clusters: two complete for ATP-A and ATP-B and one incomplete for ATP-F. ATP-A and ATP-B clusters contain paralogs that are also reported as a result of clustering. There are two paralogs on the ATP-A branch one is of Rhodopirellula baltica and the second is of Methanosarcina acetivorans, and there are three paralogs on the ATP-B branch: two are from the same species as those on the ATP-A branch, i.e. Rhodopirellula baltica and Methanosarcina acetivoran, and the third is from Chlorobium tepidum. List of 30 taxa: 16 Bacteria: Aquifex aeolicus, Bacillus subtilis, Chlorobium tepidum, Corynebacterium glutamicum, Deinococcus radiodurans, Geobacillus kaustophilus, Geobacter sulfurreducens, Gloeobacter violaceus, Nostoc sp., Pseudomonas aeruginosa, Rhodopirellula baltica, Rhodopseudomonas palustris, Streptococcus thermophilus, Streptomyces coelicolor, Thermotoga maritime, Thermus thermophilus, and 14 Archaea: Aeropyrum pernix,Archaeoglobus fulgidus,Haloarcula marismortui, ...
A water heater can provide an ideal environment for the conversion of sulfate to hydrogen sulfide gas. The water heater can produce hydrogen sulfide gas in two ways - creating a warm environment where sulfur bacteria can live, and sustaining a reaction between sulfate in the water and the water heater anode. A water heater usually contains a metal rod called an anode, which is installed to reduce corrosion of the water heater tank. The anode is usually made of magnesium metal, which can supply electrons that aid in the conversion of sulfate to hydrogen sulfide gas. The anode is 1/2 to 3/4 inches in diameter and 30 to 40 inches long. ...
en] alpha-Amylases are present in all kingdoms of the living world. Despite strong conservation of the tertiary structure, only a few amino acids are conserved in interkingdom comparisons. Animal alpha-amylases are characterized by several typical motifs and biochemical properties. A few cases of such alpha-amylases have been previously reported in some eubacterial species. We screened the bacterial genomes available in the sequence databases for new occurrences of animal-like alpha-amylases. Three novel cases were found, which belong to unrelated bacterial phyla: Chloroflexus aurantiacus, Microbulbifer degradans, and Thermobifida fusca. All the animal-like alpha-amylases in Bacteria probably result from repeated horizontal gene transfer from animals. The M. degradans genome also contains bacterial-type and plant-type alpha-amylases in addition to the animal-type one. Thus, this species exhibits alpha-amylases of animal, plant, and bacterial origins. Moreover, the similarities in the extra ...
1. (1)中国科学院武汉物理与数学研究所波谱与原子分子物理国家重点实验室,武汉 430071; (2)中国科学院武汉物理与数学研究所波谱与原子分子物理国家重点实验室,武汉 430071;中国科学院安徽光学精密机械研究所激光光谱学开放实验室,合肥 ...
The fifth generation of mobile communication systems (5G) promises unprecedented levels of connectivity and quality of service (QoS) to satisfy the incessant growth in the number of mobile smart devices and the huge increase in data demand. One of the primary ways 5G network technology will be accomplished is through network densification, namely increasing the number of antennas per site and deploying smaller and smaller cells.. Massive MIMO, where MIMO stands for multiple-input multiple-output, is widely expected to be a key enabler of 5G. This technology leverages an aggressive spatial multiplexing, from using a large number of transmitting/receiving antennas, to multiply the capacity of a wireless channel. A massive MIMO base station (BS) is equipped with a large number of antennas, much larger than the number of active users. The users are coherently served by all the antennas, in the same time-frequency resources but separated in the spatial domain by receiving very directive signals. By ...
The Reebok One GSB Exercise Bike is normally priced at £649.00, but not presently available for online ordering. Please see alternative selections displayed on the page.
Web: ewh.ieee.org/r6/scv/emc Choosing the right antenna for radiated immunity measurements can be quite challenging, especially above 1 GHz.? On the one hand, a high-gain antenna is desired to reduce the amplifier power needed.? On the other hand, the 3-dB-beamwidth needs to be taken into account to maximize the illuminated area.? This is especially true for measurements according to IEC61000-4-3, MIL-STD 461 or full-vehicle testing according to MIL-STD 464 ...
Antenas de recepción para las radios y escáneres para onda corta también para VHF y UHF portátil y antena activa fijo, distribuidores de señal de antena y accesorios.
benefits?. The EMR Policy Institutes comment will include an in-depth discussion of the inadequacy of the FCC RF exposure guidelines based on the current science. You do not need to address that in your individual statement.. What we need from interested individuals is a brief statement that you are concerned about having to live next to antennas and transmitters if wireless internet is built out in your local environment. If you already live or work close to a cell tower site or antenna site on a neighboring building, be sure to tell us that. Let us know if your children are in a school that is close to antennas.. Right now send us a brief statement by e-mail expressing your concern for your long-term health and safety. You can note a specific issue such as electrohypersensitivity if it applies.. Include your name, physical address, mailing address if that differs, and phone number and the date.. We will call you and e-mail you a formal affidavit which will require your signature and needs to ...
Flexiform is the leading brand of hand formable coaxial cable used by the RF and Communications industries worldwide. One of the main applications for this cable is for cellular base station antennas. The new cable offers the possibility for antenna manufacturers to design better antennas with better call quality. ...
High-frequency (HF) tags in random orientation can also be read quickly. However, there are times when the antennas of two tags could touch each other, detuning the antennas and thereby preventing the tags from being read. And a tag can sometimes shield another tag, preventing energy from reading tags behind it. So it is difficult to generalize and say that every tag can always be read when there are dozens or hundreds of tags in a read field ...
Control showing 100% resistance when open circuit. As you can see from the pictures above, there is basically zero resistance between the two antennas. This means we arent bridging "the gap" and shorting the two antennas because they are already connected. Ruling out this bridging effect explains why the top gap doesnt suffer the same issue.. UPDATE Continuing to test this, its hard to argue with the bridge theory. I just place one finger (you know which one Apple) right on the separator and the signal starts to drop. What I dont get is how this doesnt effect the upper gap, theoretically it should be the same right? Check out Marco Arments solution, spoiler alert: masking tape.. Its obvious something is going on here, so next I checked out Daring Fireball. John Gruber doesnt have the issue (lucky bastard), but linked to an article by Jim Dalrymple of The Loop who adds:. ...
According to the physical characteristics of the site and the equipment required to meet the carriers needs, antennas and other necessary hardware is installed. The typical transmission unit may resemble a small AC unit, or an unassuming array of panels. Equipment installed on a rooftop may be housed in an outdoor cabinet, or mounted on an existing wall. Others are installed in a closet-like space just below the roof. Below-roof units are barely noticeable. As time goes on, Bronston says, "Well see more camouflaging [of the units]." Carriers go to great lengths to keep the antennas and other hardware concealed. Flagpoles, church steeples, and lighthouses are some of the disguises that are already being used. All expenses involved in the installation, maintenance, and concealment of the site are the responsibility of the wireless carrier.. ...
Do you know what TV aerials are? Have you ever noticed while walking on the street, there are different types of antennas and aerials are installed on the roof
Hi friends I am starting to characterize a system in which we will plan to measure the response of a sample of liquid to radio waves. In order to do this I am exciting two antennas with the ports of ...
Photosynthetic organisms have evolved diverse antennas to harvest light of various qualities and intensities. Anoxygenic phototrophs can have bacteriochlorophyll Qy antenna absorption bands ranging from about 700-1100 nm. This broad range of usable wavelengths has allowed many organisms to thrive in unique environments. Roseiflexus castenholzii is a niche-adapted, filamentous anoxygenic phototroph: FAP) that lacks chlorosomes, the dominant antenna found in all green bacteria. Light-harvesting is realized only in the membrane with BChl a and a variety of carotenoids. Through biochemical and spectroscopic methods, a model for the size and organization of the photosynthetic antenna is presented. Despite the wide distribution of antennas, photochemistry occurs in the reaction center: RC), which can be separated into two groups distinguishable by the identity of the terminal electron acceptor. These are the Fe-S type or type-I and the quinone-type or type -II RCs. All known anoxygenic phototrophs have
0010] More precisely, a first aspect of the present invention relates to an electromagnetic probe for measuring the electromagnetic properties of a subsurface formation in a limited zone surrounding a well-bore hole, the well-bore hole being filled with a well-bore fluid. The probe comprises a pad having a first face defining a first area arranged to be positioned in contact with a well-bore wall. The probe further comprises: [0011] at least two transmitting antennas defining a central point between them, [0012] at least a first and a second set of receiving antennas, each set comprising a first receiving antenna and a second receiving antenna, the first receiving antenna being positioned on one side of the transmitting antennas and the second receiving antenna being positioned on other side of the transmitting antennas so that each set encompass the transmitting antennas, [0013] the first set of receiving antennas is spaced from a first distance from the central point, the second set of ...
TY - JOUR. T1 - Anisotropic organization and microscopic manipulation of self-assembling synthetic porphyrin microrods that mimic chlorosomes. T2 - Bacterial light-harvesting systems. AU - Chappaz-Gillot, Cyril. AU - Marek, Peter L.. AU - Blaive, Bruno J.. AU - Canard, Gabriel. AU - Bürck, Jochen. AU - Garab, G.. AU - Hahn, Horst. AU - Jávorfi, Tamás. AU - Kelemen, L.. AU - Krupke, Ralph. AU - Mössinger, Dennis. AU - Ormos, P.. AU - Reddy, Chilla Malla. AU - Roussel, Christian. AU - Steinbach, Gábor. AU - Szabó, Milán. AU - Ulrich, Anne S.. AU - Vanthuyne, Nicolas. AU - Vijayaraghavan, Aravind. AU - Zupcanova, Anita. AU - Balaban, Teodor Silviu. PY - 2012/1/18. Y1 - 2012/1/18. N2 - Being able to control in time and space the positioning, orientation, movement, and sense of rotation of nano- to microscale objects is currently an active research area in nanoscience, having diverse nanotechnological applications. In this paper, we demonstrate unprecedented control and maneuvering of ...
youtube]http://www.youtube.com/watch?v=C5prudV6xpk[/youtube]. http://www.emfnews.org/qlinks.html. Cell towers and antennas are in your neighborhood. So here it is. Go to www.antennasearch.com and enter your street address in the box provided. Within just a few seconds, the returned results will show all the towers (existing and future) and antennas within 4 miles of your residence.. For those not familiar with the distinctions, towers are tall structures (typically over 200 ft) used for cellular, paging and other radios services, and can contain multiple antennas owned by various companies.. Antennas are the actual signal emitters for cellular, paging and other radio services, and are usually placed on towers or can be stand alone and placed on top of offices, condos, churches, light poles, signs, etc. Stand alone antennas are small and difficult to spot as they are easily hidden or camouflaged. Thats why this online resource is invaluable, as it tells you where exactly they are.. ...
In a mobile communication system, receivers measure channel characteristics using a received reference channel signal. The receivers determine a weight which has orthogonality with respect to each of a preset number of weight vectors in the mobile communication system and has the highest signal-to-interference-and-noise ratio, and feedback the weight and the corresponding signal-to-interference-and-noise ratio to the transmitter. The transmitter interprets the feedback information output from the receivers and determines receivers having feedback information which are orthogonal to each other and have the maximum throughput as an addition capacity when transmitted simultaneously, and determines weights based on the feedback information of the receivers having the maximum throughput. By applying the determined weights to the antennas using a well-known beam forming scheme, data can be transmitted to each of the determined receivers. Therefore, the
Curated}} {{Biorealm Genus}} [[Image:e_ezovicum.png,frame,right,Erythromicrobium ezovicum Image from [http://141.150.157.117:8080/prokPUB/chaphtm/309/COMPLETE.htm V. V. Yurkov, "Aerobic Phototrophic Proteobacteria", March, 2001. Springer-Verlag New York, LLC.]]] ==Classification== ===Higher order taxa:=== Bacteria; Proteobacteria; Alphaproteobacteria; Sphingomonadales; Erythrobacteraceae ===Species:=== Erythromicrobium ezovicum, E. hydrolyticum, E. ramosum, Erythromicrobium sp. {, , height="10" bgcolor="#FFDF95" , NCBI: [http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?id=35810 Taxonomy] ,} ==Description and Significance== Despite the presence of bacteriochlorophyll a (Bchl a), Erythromicrobium is not capable of growing photosynthetically, which distinguishes the bacterium from other Bchl a-containing groups. Other main features include low levels of photosynthetic units in cells and strong inhibition by light of Bchl a synthesis (Yurkov et al). Due to the ...
As we can observed, the areas are more distinct than the previous time we saw the column As noted, at the bottom we can still notice a dark area due to anaerobic microorganisms and at the top we can also notice a green area due to aerobic microorganisms.The black coloured area at the bottom of the column is due to the presence of iron sulfide which degrades organic matter thus we can notice that black colour . In addition, a small pick coloured area can be observed in the middle region of the column and that is due to a substance produced by purple sulfur bacteria which are responsible for that pink colour. ...
1EYS: Crystal structures of photosynthetic reaction center and high-potential iron-sulfur protein from Thermochromatium tepidum: thermostability and electron transfer.
Mould, B., 1994. A world list of rays. The scientific nomenclature and distribution of the recent Batoidea (Batoidea, Elasmobranchii, Chondrichthyes). University of Nottingham, [UK]. 82 p. (Ref. 8630 ...
U-dipole radiating elements (10) and associated feed conductors (20, 22) are cut or stamped from brass sheet stock. Each U-dipole (10) is then bent up at 90 degrees to the signal distribution conductor (22) which is supported in front of a reflector (12). The U-dipole element (10) includes a first dipole-type conductor segment (14) connected near one end to a feed segment (20) which is the sole signal feed path to the U-dipole element. A second dipole-type conductor segment (16), which is spaced from and parallel to and coextensive with first segment (14), is connected to the other end of the first segment (14). An antenna may include one or more individual U-dipole elements cut from sheet stock and connected to feed points. In a linear array antenna configuration, a group of U-dipole elements (10a-10b) and associated signal feed network components may be cut in a unitary form from a sheet of conductive material and supported in front of a reflector surface. This provides a relatively simple, low cost
MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Firstly, lets start by saying that I have been mobile for the past 5+ years, from both coasts and up and down the eastern seaboard, and as far inland as Iowa. I use an IC-706 and TJ Antennas BB-3 Screwdriver. It might just as well be a High Sierra or a DK3 or whatever - the brand isnt important (although mine matches my cars color); the design is. 1) I have worked many thousands of QRP mobile QSOs, including ragchews, contest Qs, DXing (worked about 125 countries mobile, probably 100 QRP). 2) Most of my activity has been on 40, 30, 20, and 15 meters 3) I have used the following: Outbacker (orig. and Perth) Spider Antenna Hustler system (triple resonator adaptors, too) Hamsticks stainless whips 2m & 6m squalos and halos 4) I have used triple and quad-sticker mag mounts, various masts, and (finally) permanently mounted 3/8" steel mounts capable of holding 10+ pound antennas in 85+ mph winds. Heres the story: I have used an Alinco ...
www.MOLUNA.de Chlorophylls and Bacteriochlorophylls [4093768] - The first dedicated new work since 1991, this book reviews recent progress and current studies in the chemistry, metabolism and spectroscopy of chlorophylls, bacteriochlorophylls and their protein complexes. Also discussed is progress on the applications of chlorophylls as photosensitizers in photodynamic therapy of cancerous tumours, and as molecular probes in

*Bacterial phyla

Chlorobi[edit]. Main article: Chlorobi. Chlorobi is a member of the FBC superphylum. It contains only 7 genera of obligately ... The FCB group (now called Sphingobacteria) includes Bacteroidetes, the unplaced genus Caldithrix, Chlorobi, candidate phylum ... The reaction centre for photosynthesis in Chlorobi and Chloroflexi (another photosynthetic group) is formed by a structures ...

*Bacteroidetes

Relatedness of Bacteroidetes, Chlorobi and Fibrobacteres phyla[edit]. Species from the Bacteroidetes and Chlorobi phyla branch ... 1] This phylum is sometimes grouped with Chlorobi, Fibrobacteres, Gemmatimonadates, Caldithrix, and marine group A to form the ... This deletion is also found in one Chlorobi species and one Archaeum species, which is likely due to horizontal gene transfer. ... Gupta, R. S. (2004). "The phylogeny and signature sequences characteristics of Fibrobacteres, Chlorobi, and Bacteroidetes". ...

*Green sulfur bacteria

Phylum Chlorobi Iino et al. 2010. *Class Ignavibacteria Iino et al. 2010 *Order Ignavibacteriales Iino et al. 2010 *Family ... See the NCBI webpage on Chlorobi Data extracted from Sayers; et al. "NCBI Taxonomy Browser". National Center for Biotechnology ... Together with the non-photosynthetic Ignavibacteriaceae, they form the phylum Chlorobi.[1] ... "Chlorobi". Archived from the original on 2013-01-27. Retrieved 2016-03-20.. ...

*Flavobacterium akiainvivens

Lineage( full ) cellular organisms; Bacteria; FCB group; Bacteroidetes/Chlorobi group; Bacteroidetes; Flavobacteriia; ...

*Bacterial taxonomy

phylum Chlorobi vs. class Chlorobia from Chlorobium. *phylum Verrucomicrobia vs. class Verrucomicrobiae from Verrucomicrobium ( ... Green sulfur bacteria are members of the Chlorobi. *Purple bacteria are some, but not all, members of the phylum Proteobacteria ...

*Bakterid - Vikipeedia, vaba entsüklopeedia

Chlorobi (rohelised väävlibakterid). On väike hõimkond obligaatanaeroobe ja bakterklorofülli sisaldavaid fototroofseid ...

*Sphingobacteria (phylum)

Gupta, R. S. (2004). "The Phylogeny and Signature Sequences Characteristics ofFibrobacteres,Chlorobi, andBacteroidetes". ... Chlorobi (Chlorobea in Cavalier-Smith megaclassification) Bacteroidetes, which differs from Cavalier-Smith megaclassification ...

*Acidobacteria

See the NCBI webpage on Chlorobi Data extracted from Sayers; et al. "NCBI Taxonomy Browser". National Center for Biotechnology ...

*Fibrobacteres

Gupta, R. S. (2004). "The phylogeny and signature sequences characteristics of Fibrobacteres, Chlorobi, and Bacteroidetes". ... indicate that Fibrobacter succinogenes is closely related to the species from the phyla Bacteroidetes and Chlorobi. The species ... that are specific for the Bacteroidetes and Chlorobi species". BMC Evolutionary Biology. 7: 71. doi:10.1186/1471-2148-7-71. PMC ...

*Chlorosome

In Chlorobi, chlorosome monolayers can contain up to eleven different proteins. The proteins of Chlorobi are the ones currently ...

*Flavobacteriales

Gupta, R. S. (2004). The phylogeny and signature sequences characteristics of Fibrobacteres, Chlorobi, and Bacteroidetes. ... that are specific for the Bacteroidetes and Chlorobi species. BMC Evolutionary Biology. 7:71. doi:10.1186/1471-2148-7-71.. ...

*Fibrobacter succinogenes

... that are uniquely shared by Fibrobacter succinogenes and all of the species from Bacteroidetes and Chlorobi phyla. All of these ... Chlorobi, and Bacteroidetes". Critical Reviews in Microbiology. 30 (2): 123-43. doi:10.1080/10408410490435133. PMID 15239383. ... that are specific for the Bacteroidetes and Chlorobi species". BMC Evolutionary Biology. 7: 71. doi:10.1186/1471-2148-7-71. PMC ... indicate that Fibrobacter succinogenes is closely related to the species from the phyla Bacteroidetes and Chlorobi. Fibrobacter ...

*Chlorobium

In addition to the conserved signature indels, 51 proteins which are uniquely found in members of the phylum Chlorobi. 65 other ... Species from the Bacteroidetes and Chlorobi phyla branch very closely together in phylogenetic trees, indicating a close ... The presence of these molecular signatures supports the close relationship of the Bacteroidetes and Chlorobi phyla. ... Gupta R. S. (2004). "The phylogeny and signature sequences characteristics of Fibrobacteres, Chlorobi, and Bacteroidetes". ...

*List of bacterial orders

2016 This section lists the orders of Bacteria within the phylum Chlorobi. Chlorobiales Gibbons & Murray 1978 Ignavibacteriales ...

*Microbial metabolism

Phototrophic bacteria are found in the phyla Cyanobacteria, Chlorobi, Proteobacteria, Chloroflexi, and Firmicutes. Along with ...

*Chloroflexi (class)

A CSI has been found to be shared among both Chloroflexia and Chlorobi members, which has been interpreted as the result of a ... Chloroflexia species form a distinct lineage with Chlorobi species, their closest phylogenetic relatives. ...

*Bacteroidetes, a enciclopedia libre

Este filo agrúpase ás veces con Chlorobi, Fibrobacteres, Gemmatimonadetes, Caldithrix e o grupo mariño A para formar o grupo ... Phylogenomics and Evolutionary Studies on Bacteriodetes, Chlorobi and Fibrobacteres Species Filoxenia das bacterias ...

*Chloroflexi (phylum)

Another phylum with the same root is Chlorobi, whereas Cyanobacteria has the root cyanos (κύανος) meaning "blue-green". Unlike ... are either cyanobacteria or chlorobi. Sutcliffe, I. C. (2010). "A phylum level perspective on bacterial cell envelope ...

*Horizontal gene transfer

... between Chlorobi and Cyanobacteria. TetO gen conferring resistance to tetracycline, between Campylobacter jejuni. Neochrome, ...

*Gram-negative bacteria

Chlorobi, Cyanobacteria, Fibrobacteres, Verrucomicrobia, Planctomycetes, Spirochetes, Acidobacteria) from these other atypical ...

*Gram-positive bacteria

Chlorobi, Cyanobacteria, Fibrobacteres, Verrucomicrobia, Planctomycetes, Spirochetes, Acidobacteria, etc.) from these other ...

*Lnt RNA motif

Specifically, Lnt RNAs are known only in species within the phylum Chlorobi, and are located in the possible 5' untranslated ...

*Chloroflexus aurantiacus

... and light-harvesting chlorosomes containing bacteriochlorophyll c similar to green sulfur bacteria of the Chlorobi. Like other ...

*Conserved signature indels

Bacteroidetes-Chlorobi, Chlamydiales, Planctomycetes and Aquificales. This CSI is absent in other ancestral bacterial phyla as ...

*STAXI RNA motif

Bacteroidales-1 RNA motif Chlorobi-1 RNA motif JUMPstart RNA motif Lactis-plasmid RNA motif Ocean-V RNA motif PotC RNA motif ...

*SMK box riboswitch

SAH riboswitch SAM-I riboswitch SAM-II riboswitch SAM-IV riboswitch SAM-V riboswitch SAM-Chlorobi RNA motif SAM-SAH riboswitch ...

SAM-Chlorobi RNA motif - WikipediaSAM-Chlorobi RNA motif - Wikipedia

In fact all predicted metK and ahcY genes within Chlorobi bacteria as of 2010 are preceded by predicted SAM-Chlorobi RNAs. ... The SAM-Chlorobi RNA motif is a conserved RNA structure that was identified by bioinformatics. The RNAs are found only in ... The placement of SAM-Chlorobi RNAs suggests that they are involved in the regulation of the metK/ahcY operon through an unknown ... Predicted promoter sequences are consistently found upstream of SAM-Chlorobi RNAs, and these promoter sequences imply that SAM- ...
more infohttps://en.wikipedia.org/wiki/SAM-Chlorobi_RNA_motif

Chlorobi-RRM RNA motif - WikipediaChlorobi-RRM RNA motif - Wikipedia

The Chlorobi-RRM RNA motif is a conserved RNA structure identified by bioinformatics. It is found within bacteria in the phylum ... it was proposed that the Chlorobi-RRM is a component in an analogous feedback mechanism. Structurally, the motif consists of ... Chlorobi, and is exclusively detected in the presumed 5 untranslated regions (5 UTRs) of genes that encode putative RNA- ... Page for Chlorobi-RRM RNA at Rfam. ...
more infohttps://en.wikipedia.org/wiki/Chlorobi-RRM_RNA_motif

Chlorobi | Article about Chlorobi by The Free DictionaryChlorobi | Article about Chlorobi by The Free Dictionary

Find out information about Chlorobi. A physiologic group of green photosynthetic bacteria of the Chloraceae that are capable of ... Chlorobi , Article about Chlorobi by The Free Dictionary https://encyclopedia2.thefreedictionary.com/Chlorobi ... redirected from Chlorobi) green sulfur bacteria. [′grēn ¦səl·fər bak′tir·ē·ə] (microbiology) A physiologic group of green ... and chlorobi.. The impact of crop residue amendments and lime on microbial community structure and nitrogen-fixing bacteria in ...
more infohttps://encyclopedia2.thefreedictionary.com/Chlorobi

Bacterial phyla - WikipediaBacterial phyla - Wikipedia

Chlorobi[edit]. Main article: Chlorobi. Chlorobi is a member of the FBC superphylum. It contains only 7 genera of obligately ... The FCB group (now called Sphingobacteria) includes Bacteroidetes, the unplaced genus Caldithrix, Chlorobi, candidate phylum ... The reaction centre for photosynthesis in Chlorobi and Chloroflexi (another photosynthetic group) is formed by a structures ...
more infohttps://en.wikipedia.org/wiki/Bacterial_phyla

Bacteroidetes - WikipediaBacteroidetes - Wikipedia

Relatedness of Bacteroidetes, Chlorobi and Fibrobacteres phyla[edit]. Species from the Bacteroidetes and Chlorobi phyla branch ... 1] This phylum is sometimes grouped with Chlorobi, Fibrobacteres, Gemmatimonadates, Caldithrix, and marine group A to form the ... This deletion is also found in one Chlorobi species and one Archaeum species, which is likely due to horizontal gene transfer. ... Gupta, R. S. (2004). "The phylogeny and signature sequences characteristics of Fibrobacteres, Chlorobi, and Bacteroidetes". ...
more infohttps://en.wikipedia.org/wiki/Bacteroidetes

Comparative genomics reveals 104 candidate structured RNAs from bacteria, archaea, and their metagenomes | Genome Biology |...Comparative genomics reveals 104 candidate structured RNAs from bacteria, archaea, and their metagenomes | Genome Biology |...

SAM-Chlorobi motif. The SAM-Chlorobi motif is found in the potential 5 UTRs of operons containing all predicted metK and ahcY ... imply that SAM-Chlorobi RNAs are transcribed (Additional File 1). However, preliminary analysis of several SAM-Chlorobi RNA ... Gupta RS: The phylogeny and signature sequences characteristics of Fibrobacteres, Chlorobi, and Bacteroidetes. Crit Rev ... genes within the phylum Chlorobi. As noted earlier, metK encodes SAM synthetase, and in most other organisms, metK homologues ...
more infohttps://genomebiology.biomedcentral.com/articles/10.1186/gb-2010-11-3-r31

Bacteria - New World EncyclopediaBacteria - New World Encyclopedia

Bacteroidetes/Chlorobi. Chlamydiae/Verrucomicrobia. Chloroflexi. Chrysiogenetes. Cyanobacteria. Deferribacteraceae, ...
more infohttp://www.newworldencyclopedia.org/entry/Bacteria

About: BacteriaAbout: Bacteria

Bacteroidetes/Fibrobacteres-Chlorobi. *Deinococcus-Thermus. *Nitrospirae. *Planctomycetes-Verrucomicrobia/Chlamydiae. * ...
more infohttp://dbpedia.org/page/Bacteria

UniProt: B4SA19 PELPBUniProt: B4SA19 PELPB

Chlorobi; Chlorobia; Chlorobiales; Chlorobiaceae; OC Chlorobium/Pelodictyon group; Pelodictyon. OX NCBI_TaxID=324925 {ECO: ...
more infohttp://www.genome.jp/dbget-bin/www_bget?uniprot:B4SA19_PELPB

UniProt/TrEMBL: B3EM59 CHLPBUniProt/TrEMBL: B3EM59 CHLPB

Chlorobi; Chlorobia; Chlorobiales; Chlorobiaceae; OC Chlorobium/Pelodictyon group; Chlorobium. OX NCBI_TaxID=331678 {ECO: ...
more infohttp://www.genome.jp/dbget-bin/www_bget?tr:B3EM59_CHLPB

Bacterial taxonomy - WikipediaBacterial taxonomy - Wikipedia

phylum Chlorobi vs. class Chlorobia from Chlorobium. *phylum Verrucomicrobia vs. class Verrucomicrobiae from Verrucomicrobium ( ... Green sulfur bacteria are members of the Chlorobi. *Purple bacteria are some, but not all, members of the phylum Proteobacteria ...
more infohttps://en.m.wikipedia.org/wiki/Bacterial_taxonomy

Subglacial Lake Vostok (Antarctica) Accretion Ice Contains a Diverse Set of Sequences from Aquatic, Marine and Sediment...Subglacial Lake Vostok (Antarctica) Accretion Ice Contains a Diverse Set of Sequences from Aquatic, Marine and Sediment...

The second most common was the reductive TCA (tricarboxylic acid) pathway, present in members of Chlorobi, Alphaproteobacteria ... but the Chlorobi and Alphaproteobacteria sequences exhibited identities ≥97% to known sequences. This cycle is common in ... Chlorobi; Ch = Chloroflexi, Cy = Cyanobacteria, Fi = Firmicutes, Pl = Planctomycetes. Pathways and taxa in black font denote ... Chlorobi/Deferribacteres/Fibrobacteres; Ch = Chloroflexi; Cy = Cyanobacteria; Greek delta = Deltaproteobacteria; DT = ...
more infohttps://journals.plos.org/plosone/article?id=10.1371/journal.pone.0067221

Simister RL[au] - PubMed - NCBISimister RL[au] - PubMed - NCBI

Nutrient Acquisition and the Metabolic Potential of Photoferrotrophic Chlorobi.. Thompson KJ, Simister RL, Hahn AS, Hallam SJ, ...
more infohttps://www.ncbi.nlm.nih.gov/pubmed?cmd=search&term=Simister+RL%5Bau%5D&dispmax=50

Quantitative analysis of mutation and selection pressures on base composition skews in bacterial chromosomes | BMC Genomics |...Quantitative analysis of mutation and selection pressures on base composition skews in bacterial chromosomes | BMC Genomics |...

The σG T averages are very small (≤ 0.005) and vary widely in three phyla (Actinobacteria, Chlorobi, and Deinococcus-Thurmus), ...
more infohttps://bmcgenomics.biomedcentral.com/articles/10.1186/1471-2164-8-286

NASA Technical Reports Server (NTRS) - The evolution of glutathione metabolism in phototrophic microorganismsNASA Technical Reports Server (NTRS) - The evolution of glutathione metabolism in phototrophic microorganisms

CHLOROBI CHROMATIUM CYANOBACTERIA DISULFIDES DISULFIDES/ANALYSIS EUKARYOTES EUKARYOTIC CELLS EVOLUTION EXOBIOLOGY GLUTATHIONE ... CHLOROBI; CHROMATIUM; CYANOBACTERIA; DISULFIDES/ANALYSIS; EUKARYOTIC CELLS; OXIDATION-REDUCTION; OXYGEN/TOXICITY; ...
more infohttps://ntrs.nasa.gov/search.jsp?R=20040089109&hterms=euglena&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D10%26Ntt%3Deuglena

Comprehensive prediction of chromosome dimer resolution sites in bacterial genomes | BMC Genomics | Full TextComprehensive prediction of chromosome dimer resolution sites in bacterial genomes | BMC Genomics | Full Text

In Chlorobi, an initial seed profile was created with predicted dif sequences in Chlorobaculum parvum NCIB 8327 and ... In Chloroflexi, the Chlorobi profile was suitable for Dehalococcoides sp. BAV1 and Dehalococcoides sp. CBDB1, and that of ... Using these seed profiles, iterated HMM successfully predicted dif sequences in all 11 genomes in Chlorobi and 14 genomes in ... In Verrucomicrobia, profiles based on Proteobacteria, Firmicutes and Chlorobi predicted Methylacidiphilum infernorum V4, and ...
more infohttps://bmcgenomics.biomedcentral.com/articles/10.1186/1471-2164-12-19

Link between sea and land animals found | Page 3 | SciforumsLink between sea and land animals found | Page 3 | Sciforums

Chlorobi. , , , `--Bacteroidetes. , , `--+--Spirochaetes. , , `--+--Fusobacteria. , , `--Proteobacteria. , , ,--Rhodobacteria. ...
more infohttp://www.sciforums.com/threads/link-between-sea-and-land-animals-found.53866/page-3

Mapping the Tree of Life: Progress and Prospects | Microbiology and Molecular Biology ReviewsMapping the Tree of Life: Progress and Prospects | Microbiology and Molecular Biology Reviews

FIG. 5. Archaeal rRNA trees with sequences available in 1993 and 2008. Archaeal SSU rRNA sequences available in 1993 (classic archaeal tree) (A) and in 2008 (B) were used in maximum likelihood bootstrap analysis with RAxML (64) as described previously (56, 57). The boxes represent radiations within the groups, with the long and short dimensions reflecting the line segment lengths within the groups. The sizes of the boxes reflect sequence representation for the groups. The numbers at the base of the boxes are bootstrap percentages. The box labeled Environmental "Euryarchaeota" is not a phylogenetically coherent group. ...
more infohttps://mmbr.asm.org/content/73/4/565/figures-only

Frontiers | Diurnal Changes in Active Carbon and Nitrogen Pathways Along the Temperature Gradient in Porcelana Hot Spring...Frontiers | Diurnal Changes in Active Carbon and Nitrogen Pathways Along the Temperature Gradient in Porcelana Hot Spring...

At 48°C there was ten times lower activity and it was due to Chlorobi. Klatt et al. (2013b) showed that Chloroflexus and ... Our Chlorobi sequences accounted for 0.38, 0.07, and 1.96% of all the metagenomic reads at 48, 58, and 66°C, respectively. Most ... Stamps, B. W., Corsetti, F. A., Spear, J. R., and Stevenson, B. S. (2014). Draft genome of a novel Chlorobi member assembled by ... The remaining bacterial phyla found (i.e., Chlorobi, Planctomycetes, Actinobacteria, etc.) accounted for less than 1% each of ...
more infohttps://www.frontiersin.org/articles/10.3389/fmicb.2018.02353/full

Tenacibaculum maritimum - microbewikiTenacibaculum maritimum - microbewiki

Bacteria; Bacteroidetes/Chlorobi group; Bacteroidetes; Flavobacteriia; Flavobacteriales; Flavobacteriaceae; Tenacibaculum ...
more infohttps://microbewiki.kenyon.edu/index.php?title=Tenacibaculum_maritimum&

Bakterid - Vikipeedia, vaba entsüklopeediaBakterid - Vikipeedia, vaba entsüklopeedia

Chlorobi (rohelised väävlibakterid). On väike hõimkond obligaatanaeroobe ja bakterklorofülli sisaldavaid fototroofseid ...
more infohttps://et.wikipedia.org/wiki/Bakter

Flexibacter - microbewikiFlexibacter - microbewiki

Bacteria; Bacteroidetes/Chlorobi group; Bacteroidetes; Sphingobacteria; Sphingobacteriales; Flexibacteraceae Species:. ...
more infohttps://microbewiki.kenyon.edu/index.php?title=Flexibacter&printable=yes

CAZy - BacteriaCAZy - Bacteria

Lineage: cellular organisms; Bacteria; FCB group; Bacteroidetes/Chlorobi group; Chlorobi; Chlorobia; Chlorobiales; ...
more infohttp://www.cazy.org/b776.html

CarD uses a minor groove wedge mechanism to stabilize the RNA polymerase open promoter complex | eLifeCarD uses a minor groove wedge mechanism to stabilize the RNA polymerase open promoter complex | eLife

Chlorobi. diderm Gram−. No. 12. Chloroflexi. diderm Gram−: glydobacteria. No. 32. Chrysiogenetes. diderm Gram−: ...
more infohttps://elifesciences.org/articles/08505
  • Other bacterial sequences were affiliated with Gammaproteobacteria (12.2%), Betaproteobacteria (11.7%), Deltaproteobacteria (0.8%), and the Acidobacterium (5.6%) and Bacteriodetes/Chlorobi (1.7%) divisions. (openthesis.org)
  • Predicted promoter sequences are consistently found upstream of SAM-Chlorobi RNAs, and these promoter sequences imply that SAM-Chlorobi RNAs are indeed transcribed as RNAs. (wikipedia.org)
  • Phototrophic species are green or orange en masse, the color depending of which photopigments are produced. (ncsu.edu)
  • This deletion is also found in one Chlorobi species and one Archaeum species, which is likely due to horizontal gene transfer . (worldheritage.org)
  • Since many RNA-binding proteins regulate their own expression in a feedback mechanism by binding or acting up their 5' UTR, it was proposed that the Chlorobi-RRM is a component in an analogous feedback mechanism. (wikipedia.org)