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.
A phylum of bacteria comprised of three classes: Bacteroides, Flavobacteria, and Sphingobacteria.
The relationships of groups of organisms as reflected by their genetic makeup.
The genetic complement of a BACTERIA as represented in its DNA.
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)
The terms, expressions, designations, or symbols used in a particular science, discipline, or specialized subject area.
One of the three domains of life (the others being Eukarya and ARCHAEA), also called Eubacteria. They are unicellular prokaryotic microorganisms which generally possess rigid cell walls, multiply by cell division, and exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal. Bacteria can be classified by their response to OXYGEN: aerobic, anaerobic, or facultatively anaerobic; by the mode by which they obtain their energy: chemotrophy (via chemical reaction) or PHOTOTROPHY (via light reaction); for chemotrophs by their source of chemical energy: CHEMOLITHOTROPHY (from inorganic compounds) or chemoorganotrophy (from organic compounds); and by their source for CARBON; NITROGEN; etc.; HETEROTROPHY (from organic sources) or AUTOTROPHY (from CARBON DIOXIDE). They can also be classified by whether or not they stain (based on the structure of their CELL WALLS) with CRYSTAL VIOLET dye: gram-negative or gram-positive.
The study of the structure, growth, function, genetics, and reproduction of bacteria, and BACTERIAL INFECTIONS.
Constituent of 30S subunit prokaryotic ribosomes containing 1600 nucleotides and 21 proteins. 16S rRNA is involved in initiation of polypeptide synthesis.
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
A gram-negative gliding bacterium isolated from the oral cavity. It is a pathogen often causing PERIODONTITIS.
A genus of gram-negative, anaerobic, nonsporeforming, nonmotile rods. Organisms of this genus had originally been classified as members of the BACTEROIDES genus but overwhelming biochemical and chemical findings in 1990 indicated the need to separate them from other Bacteroides species, and hence, this new genus was established.
A genus of gram-negative, chemoorganotrophic bacteria in the family Sphingobacteriaceae. They lack FLAGELLA but some species exhibit sliding motility.
A disorder with chronic or recurrent colonic symptoms without a clearcut etiology. This condition is characterized by chronic or recurrent ABDOMINAL PAIN, bloating, MUCUS in FECES, and an erratic disturbance of DEFECATION.
A collective genome representative of the many organisms, primarily microorganisms, existing in a community.
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.
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.
Bacteria which lose crystal violet stain but are stained pink when treated by Gram's method.
Bacteria which retain the crystal violet stain when treated by Gram's method.
A genus of phototrophic, obligately anaerobic bacteria in the family Chlorobiaceae. They are found in hydrogen sulfide-containing mud and water environments.
The articulation between a metatarsal bone (METATARSAL BONES) and a phalanx.
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)
Databases containing information about PROTEINS such as AMINO ACID SEQUENCE; PROTEIN CONFORMATION; and other properties.
The protein complement of an organism coded for by its genome.
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.
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.
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.
The planning of the furnishings and decorations of an architectural interior.
The systematic arrangement of entities in any field into categories classes based on common characteristics such as properties, morphology, subject matter, etc.
The units based on political theory and chosen by countries under which their governmental power is organized and administered to their citizens.
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.
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.
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)
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.
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.
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.
The intrinsic moral worth ascribed to a living being. (Bioethics Thesaurus)
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.
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.
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.
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).
Somewhat flattened, globular echinoderms, having thin, brittle shells of calcareous plates. They are useful models for studying FERTILIZATION and EMBRYO DEVELOPMENT.

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)

TY - JOUR. T1 - Iron-sulfur centers in the photosynthetic reaction center complex from Chlorobium vibrioforme. Differences from and similarities to the iron-sulfur centers in Photosystem I. AU - Kjær, Bodil. AU - Jung, Yean Sung. AU - Yu, Lian. AU - Golbeck, John H.. AU - Scheller, Henrik Vibe. PY - 1994/7/1. Y1 - 1994/7/1. N2 - The photosynthetic reaction center complex from the green sulfur bacterium Chlorobium vibrioforme has been isolated under anaerobic conditions. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis reveals polypeptides with apparent molecular masses of 80, 40, 30, 18, 15, and 9 kDa. The 80- and 18-kDa polypeptides are identified as the reaction center polypeptide and the secondary donor cytochrome c551 encoded by the pscA and pscC genes, respectively. N-terminal amino acid sequences identify the 40-kDa polypeptide as the bacteriochlorophyll a-protein of the baseplate (the Fenna-Matthews-Olson protein) and the 30-kDa polypeptide as the putative 2[4Fe-4S] protein ...
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 ...
Transmission electron micrograph of a thin section of Chlorobaculum tepidum strain TLST. The black bar represents 100 nm. The electron transparent ovoid-shaped structures appressed to the inner surface of the cytoplasmic membrane are chlorosomes. courtesy Dr. Donald Bryant ...
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 ...
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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, ...
In contrast, the main lipid contributors to organics preserved in modern halites and bittern beds are the extremely halophilic archaea and their organic signatures are enriched in the isoprenoids, especially phytane (Table; Barbé et al., 1990; Wang, 1998). Likewise, Waples et al. (1974) and ten Haven et al. (1986), noted that Tertiary sediments deposited in many saline evaporitic lagoons retain high concentrations of regular C25 isoprenoids. They related it to the activities of the photolithotrophic Chlorobiaceae sp., an anaerobic green sulphur bacteria, known to flourish at the halocline of modern saline lakes. It is thought to have flourished in similar stratified settings in ancient mesohaline to hypersaline seaways. Its biochemistry leads to the preservation of a series of 1-alkyl-2,3,6-trimethyl benzenes, thought to be derived from the breakdown of its aromatic carotenoids in sulphate- and sulphide-rich brines (Summons and Powell, 1987). Ten Haven et al. (1988) went on to propose that ...
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 ...
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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 ...
Summary: Four strains of the thermophilic phototrophic green bacterium Chloroflexus aurantiacus were tested for nitrogenase activity under a variety of nutritional conditions consistent with nitrogenase derepression in anoxygenic photosynthetic bacteria. Although all strains of C. aurantiacus could grow with various amino acids as sole nitrogen sources, no growth on N2 was observed; acetylene reduction was undetectable in cells grown under any nutritional conditions. The inability of Chloroflexus to fix N2 is discussed in connection with its thermophilic character.
Abstract The interaction between the purple sulfur bacterium Thiocapsa roseopersicina and the green sulfur bacterium Prosthecochloris aestuarii was studied in a gradient chamber under a 16-hours light-8-hours dark regime. The effects of interaction were inferred by comparing the final outcome of a mixed culture experiment with those of the respective axenic cultures using the same inoculation densities and experimental conditions. Densities of bacteria were deduced from radiance microprofiles, and the chemical microenvironment was investigated with O2, H2S, and pH microelectrodes. P. aestuarii always formed a biofilm below the maximal oxygen penetration depth and its metabolism was strictly phototrophic. In contrast, T. roseopersicina formed a bilayer in both the mixed and the axenic culture. The top layer formed by the latter organism was exposed to oxygen, and chemotrophic sulfide oxidation took place during the dark periods, while the bottom layer grew phototrophically during the light ...
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:
Carbon metabolism is the most basic aspect of life. This map presents an overall view of central carbon metabolism, where the number of carbons is shown for each compound denoted by a circle, excluding a cofactor (CoA, CoM, THF, or THMPT) that is replaced by an asterisk. The map contains carbon utilization pathways of glycolysis (map00010), pentose phosphate pathway (map00030), and citrate cycle (map00020), and six known carbon fixation pathways (map00710 and map00720) as well as some pathways of methane metabolism (map00680). The six carbon fixation pathways are: (1) reductive pentose phosphate cycle (Calvin cycle) in plants and cyanobacteria that perform oxygenic photosynthesis, (2) reductive citrate cycle in photosynthetic green sulfur bacteria and some chemolithoautotrophs, (3) 3-hydroxypropionate bi-cycle in photosynthetic green nonsulfur bacteria, two variants of 4-hydroxybutyrate pathways in Crenarchaeota called (4) hydroxypropionate-hydroxybutyrate cycle and (5) ...
Carbon metabolism is the most basic aspect of life. This map presents an overall view of central carbon metabolism, where the number of carbons is shown for each compound denoted by a circle, excluding a cofactor (CoA, CoM, THF, or THMPT) that is replaced by an asterisk. The map contains carbon utilization pathways of glycolysis (map00010), pentose phosphate pathway (map00030), and citrate cycle (map00020), and six known carbon fixation pathways (map00710 and map00720) as well as some pathways of methane metabolism (map00680). The six carbon fixation pathways are: (1) reductive pentose phosphate cycle (Calvin cycle) in plants and cyanobacteria that perform oxygenic photosynthesis, (2) reductive citrate cycle in photosynthetic green sulfur bacteria and some chemolithoautotrophs, (3) 3-hydroxypropionate bi-cycle in photosynthetic green nonsulfur bacteria, two variants of 4-hydroxybutyrate pathways in Crenarchaeota called (4) hydroxypropionate-hydroxybutyrate cycle and (5) ...
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, ...
SWISS-MODEL Repository entry for A1BED6 (AROE_CHLPD), Shikimate dehydrogenase (NADP(+)). Chlorobium phaeobacteroides (strain DSM 266)
SWISS-MODEL Repository entry for A1BEZ1 (TRPF_CHLPD), N-(5-phosphoribosyl)anthranilate isomerase. Chlorobium phaeobacteroides (strain DSM 266)
General Information: Pelodictyon luteolum (also called Chlorobium luteolum) is a phototropic green sulfur bacteria that inhabits hydrogen sulfide containing water and freshwater mud, brackish waters and marine environments. ...
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.
Some present may remember an entertaining (not to mention illuminating (pun intended) ) blog by Professor Larry Moran:. http://sandwalk.blogspot.ca/2016/04/fun-and-games-with-otangelo-grasso.html. I am a high school Biology teacher and Professor Moran threw out some challenges which cut me to the quick.. Here is a very brief and incomplete summary:. The dual photosystems of Blue-Green Algae clearly evolved late from a combination of a type I reaction center in species like Heliobacter and green sulfur bacteria and a type II reaction center from species like purple bacteria and green filamentous bacteria. The oxygen evolving complex was a late addition.. Both photosystems employ Porphyrins and Carotenoids which are important in various metabolic processes (not just photosynthesis) meaning their evolutionary history may reflect many other functions only to be co-opted later for photosynthesis. Meanwhile both can be demonstrated to have abiogenic origins.. Meanwhile RuBisCO is found in ...
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.. ...
While generally these two zoological classifications are considered non-overlapping, important exceptions have been acknowledged. For instance, photoheterotrophs -- a sort of hybrid between the autotroph and heterotroph -- can use light for energy, but cannot use carbon dioxide like plants do as their sole carbon source, i.e. they have to eat other things. Some classical examples of photoheterotrophs include green and purple non-sulfur bacteria, heliobacteria, and heres where it gets interesting, a special kind of aphid that borrowed genes from fungi[1] to produce its own plant-like carotenoids which it uses to harness light energy to supplement its energy needs ...
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. ...
Cab.thermophilum has light harvesting antennae (chlorosomes), Fenna-Matthews-Olson (FMO) protein, and type 1 reaction centers: each chlorosome can contain up to 250,000 bacteriochlorophyll molecules. Cab.thermophilum synthesizes bacteriochlorophylls a and c (BChl) under oxic conditions (photoheterotropically) unlike the anoxic conditions in other phototrophs. Characterization of a model green sulfur bacterium Chlorobium tepidum showed that BChl c molecules forms large aggregates by self-organization due to the unique molecular structure of the bacteriochlorophylls. The formation of large molecular aggregates of BChl c is independent of any protein scaffold. These protein-independent and self-organization properties lead to the formation of very large amounts of BChl c (eg. in Green sulfur bacteria, 25-30% of the total cellular carbon is utilized in the formation of BChl c) needed for cell growth at very low light environment. Genome sequencing of a phototroph from the Chlorobi phylum, Chlorobium ...
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 ...
TY - JOUR. T1 - Two dimensional electronic spectroscopy of molecular complexes. AU - Cho, Minhaeng. AU - Brixner, Tobias. AU - Stiopkin, Igor. AU - Vaswani, Harsha. AU - Fleming, Graham R.. PY - 2006/2. Y1 - 2006/2. N2 - Two dimensional (2D) heterodyne-detected electronic photon echo spectroscopy is introduced and described. We give an intuitive description of the origin and information content of 2D electronic spectra, focusing on molecular complexes. We identify two important quantities-the transition dipole term, and the transition frequency cross correlation function that controls the appearance of 2D electronic spectra. We also show how the transition frequency cross correlation function controls the rate of exciton relaxation. These concepts are illustrated with experimental data on the seven bacteriochlorophyll FMO complex of a green sulfur bacterium, showing how the pathways and mechanisms of energy flow can be elucidated by combining 2D spectra with theoretical modeling.. AB - Two ...
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 ...
The structure, composed of a monolayer of glycolipids with embedded proteins, that encloses the pigments and other contents of the chlorosome. [PMID:14507718, PMID:14729689, PMID:17303128]
Absorption spectra of BChl a-associated proteins from various C. tepidum strains recovered by Ni2+-affinity purification.Absorption spectra (traces 1-6) of BChl
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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 ...
"Chlorobi". Archived from the original on 2013-01-27. Retrieved 2016-03-20. See the NCBI webpage on Chlorobi Data extracted from ... Together with the non-photosynthetic Ignavibacteriaceae, they form the phylum Chlorobi. Green sulfur bacteria are nonmotile ( ... Phylum Chlorobi Iino et al. 2010 Class Ignavibacteria Iino et al. 2010 Order Ignavibacteriales Iino et al. 2010 Family ...
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". ...
Lineage( full ) cellular organisms; Bacteria; FCB group; Bacteroidetes/Chlorobi group; Bacteroidetes; Flavobacteriia; ...
Together, these motifs are found in Bacteroidetes, Chlorobi AND Proteobacteria. DUF805 motif RNAs likely function as cis- ...
The FCB group is a superphylum of bacteria named after the main member phyla Fibrobacteres, Chlorobi, and Bacteroidetes. The ... It contains the classes Chlorobea (= Chlorobi), Fibrobacteres, Bacteroidetes and Flavobacteria. However, this ... Chlorobi, and Bacteroidetes". Critical Reviews in Microbiology. 30 (2): 123-143. doi:10.1080/10408410490435133. PMID 15239383. ...
See the NCBI webpage on Chlorobi Data extracted from Sayers; et al. "NCBI Taxonomy Browser". National Center for Biotechnology ...
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 ...
In Chlorobi, chlorosome monolayers can contain up to eleven different proteins. The proteins of Chlorobi are the ones currently ...
Chlorobi, Cyanobacteria, Fibrobacteres, Verrucomicrobia, Planctomycetes, Spirochetes, Acidobacteria; "Hydrobacteria") are ...
Chlorobi, and Bacteroidetes. Critical Reviews in Microbiology. 30:123-140. doi:10.1080/10408410490435133. Gupta, R. S. and ... that are specific for the Bacteroidetes and Chlorobi species. BMC Evolutionary Biology. 7:71. doi:10.1186/1471-2148-7-71. v t e ...
... 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 ...
Prokaryotic photoautotrophs include Cyanobacteria, Proteobacteria, Chloroflexi, Acidobacteria, Chlorobi, Firmicutes, ...
2016 This section lists the orders of Bacteria within the phylum Chlorobi. Chlorobiales Gibbons & Murray 1978 Ignavibacteriales ...
Phototrophic bacteria are found in the phyla Cyanobacteria, Chlorobi, Proteobacteria, Chloroflexi, and Firmicutes. Along with ...
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. ...
Chlorobi utilise H2S during photosynthesis to fix CO2, giving a 13C enrichment of lipids that renders them distinct from the ... Chlorobi) - a discovery that has underpinned some of her latter breakthroughs. From November 1995 to February 1998, Kliti ... She has additionally discovered an array of diagenetic products from the carotenoids made by Chlorobi. At Curtin University ...
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 ...
Camanocha A, Dewhirst FE (2014). "Host-associated bacterial taxa from Chlorobi, Chloroflexi, GN02, Synergistetes, SR1, TM7, and ...
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 ...
... between Chlorobi and Cyanobacteria. TetO gene conferring resistance to tetracycline, between Campylobacter jejuni. Neochrome, a ...
Chlorobi (rohelised väävlibakterid). On väike hõimkond obligaatanaeroobe ja bakterklorofülli sisaldavaid fototroofseid ...
Chlorobi (rohelised väävlibakterid). On väike hõimkond obligaatanaeroobe ja bakterklorofülli sisaldavaid fototroofseid ...
Type IX secretion systems (T9SS) are found regularly in the Fibrobacteres-Chlorobi-Bacteroidetes lineage of bacteria, where ...
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 ...
Chlorobi, Cyanobacteria, Fibrobacteres, Verrucomicrobia, Planctomycetes, Spirochetes, Acidobacteria, etc.) from these other ...
In 1962 Olson was the first to discover and characterize pigment-protein complex of green sulfur bacteria (Chlorobi), which was ...
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- ...
The Chlorobi-RRM RNA motif is a conserved RNA structure identified by bioinformatics. It is found within bacteria in the phylum ... Page for Chlorobi-RRM RNA at Rfam v t e. ... it was proposed that the Chlorobi-RRM is a component in an ... Chlorobi, and is exclusively detected in the presumed 5 untranslated regions (5 UTRs) of genes that encode putative RNA- ...
The Species 2000/ITIS Catalogue of Life : 2006 Annual Checklist is a comprehensive index of all known plants, animals, fungi and micro-organisms. It can be used to search multiple databases simultaneously for the scientific name of an organism.
Relatively few members of the phylum Chlorobi have been cultivated and characterized. Most described members of the Chlorobi ... Draft Genome of a Novel Chlorobi Member Assembled by Tetranucleotide Binning of a Hot Spring Metagenome. Blake W. Stamps, Frank ... The genome of a member of the phylum Chlorobi was assembled from a shotgun metagenomic sequence of a hot spring in Mammoth ... This draft genome, therefore, represents a potentially novel genus within the Chlorobi. The genome comprised 5.2% of all reads ...
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 ...
Candidatus Thermochlorobacter aerophilum: An aerobic chlorophotoheterotrophic member of the phylum Chlorobi defined by ... An aerobic chlorophotoheterotrophic member of the phylum Chlorobi defined by metagenomics and metatranscriptomics. Together ...
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 ...
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". ...
Within the Chlorobi population, the nitrogenase (nifH) cluster was included in a well-structured retrotransposon. Furthermore, ... Within the Chlorobi population, the nitrogenase (nifH) cluster was included in a well-structured retrotransposon. Furthermore, ... Chlorobi I and II) is represented the nif gene clusters and in the lower panel (Chlorobi III and IV) the anf gene clusters. ... Chlorobi were also shown to be an active N-fixer based on isotope probing results (Halm et al., 2009). Further, Chlorobi was ...
Strain HL-130-GSB, from the Phylum Chlorobi. Vera Thiel, Daniela I. Drautz-Moses, Rikky W. Purbojati, Stephan C. Schuster, ... Strain HL-130-GSB, from the Phylum Chlorobi. Vera Thiel, Daniela I. Drautz-Moses, Rikky W. Purbojati, Stephan C. Schuster, ... Strain HL-130-GSB, from the Phylum Chlorobi. Vera Thiel, Daniela I. Drautz-Moses, Rikky W. Purbojati, Stephan C. Schuster, ... Strain HL-130-GSB, from the Phylum Chlorobi Message Subject (Your Name) has forwarded a page to you from Microbiology Resource ...
The crystal structure of 2-chlorobi-phenyl-4-carboxylic acid. H. H. Sutherland and T. G. Hoy ...
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 ...
Chlorobi ( ), Chloroflexi ( ), Crenarchaeota ( ), Cyanobacteria ( ), Deinococcus-Thermus ( ), Dictyoglomi ( ), Euryarchaeota ( ... Chlorobi ( ), Chloroflexi ( ), Crenarchaeota ( ), Cyanobacteria ( ), Deinococcus-Thermus ( ), Dictyoglomi ( ), Euryarchaeota ( ...
The phylumChlorobi. *Evolution of photosynthesis suspected from genome comparisons in purple bacteria ...
OC Bacteria; Chlorobi; Chlorobia; Chlorobiales; Chlorobiaceae; Chlorobaculum. OX NCBI_TaxID=194439; RN [0] RP -.; RG -.; RL ...
Bacteroidetes/Chlorobi. Chlamydiae/Verrucomicrobia. Chloroflexi. Chrysiogenetes. Cyanobacteria. Deferribacteraceae, ...
Bacteroidetes/Fibrobacteres-Chlorobi. *Deinococcus-Thermus. *Nitrospirae. *Planctomycetes-Verrucomicrobia/Chlamydiae. * ...
Chlorobi; Chlorobia; Chlorobiales; Chlorobiaceae; OC Chlorobium/Pelodictyon group; Pelodictyon. OX NCBI_TaxID=324925 {ECO: ...
Group: Bacteroidetes/Chlorobi group Phylum: Chlorobi Classis: Chlorobia. Ordo: Chlorobiales. Familia: Chlorobiaceae Group: ...
Chlorobi; Chlorobia; Chlorobiales; Chlorobiaceae; OC Chlorobium/Pelodictyon group; Chlorobium. OX NCBI_TaxID=331678 {ECO: ...
Chlorobi / chemistry* * Crystallography, X-Ray * Light-Harvesting Protein Complexes / chemistry* * Light-Harvesting Protein ...
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 ...
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 = ...
Nutrient Acquisition and the Metabolic Potential of Photoferrotrophic Chlorobi.. Thompson KJ, Simister RL, Hahn AS, Hallam SJ, ...
The σG T averages are very small (≤ 0.005) and vary widely in three phyla (Actinobacteria, Chlorobi, and Deinococcus-Thurmus), ...
Chlorobi. ; Phylum: formerly Cytophaga-Flavobacteria-Bacteroides(CFB). +. Kingdom: Bacteria; Group: Bacteroidetes; Phylum: ... that are Specific for the Bacteroidetes and Chlorobi Species." BMC Evol. Biol. 2001. 1471-2148. ... that are Specific for the Bacteroidetes and Chlorobi Species. BMC Evol. Biol. 2001. 1471-2148.]. ...
CHLOROBI CHROMATIUM CYANOBACTERIA DISULFIDES DISULFIDES/ANALYSIS EUKARYOTES EUKARYOTIC CELLS EVOLUTION EXOBIOLOGY GLUTATHIONE ... CHLOROBI; CHROMATIUM; CYANOBACTERIA; DISULFIDES/ANALYSIS; EUKARYOTIC CELLS; OXIDATION-REDUCTION; OXYGEN/TOXICITY; ...
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 ...
Chlorobi. , , , `--Bacteroidetes. , , `--+--Spirochaetes. , , `--+--Fusobacteria. , , `--Proteobacteria. , , ,--Rhodobacteria. ...
6). Importantly, phyla Chlorobi, which was observed absent in RV- alone group, was significantly abundant RV + EPEC mixed ... 4). Dominance of phyla Chlorobi was associated with moderate dehydration in NoV infected children. Microbial profiles and their ...
  • The RNAs are found only in bacteria classified as within the phylum Chlorobi. (wikipedia.org)
  • In fact all predicted metK and ahcY genes within Chlorobi bacteria as of 2010 are preceded by predicted SAM-Chlorobi RNAs. (wikipedia.org)
  • The promoter sequences are commonly associated with strong transcription in the phyla Chlorobi and Bacteroidetes, but are not used by most lineages of bacteria. (wikipedia.org)
  • It is found within bacteria in the phylum Chlorobi, and is exclusively detected in the presumed 5' untranslated regions (5' UTRs) of genes that encode putative RNA-binding proteins. (wikipedia.org)
  • Most described members of the Chlorobi are anoxygenic photoautotrophic bacteria that occur in aquatic sediments, sulfur springs, and hot springs, reducing sulfur compounds instead of oxygen ( 1 ). (asm.org)
  • In addition to the green sulphur bacteria (phylum Chlorobi ), they are also present in some filamentous anoxygenic phototrophs of the phylum Chloroflexi (formerly know as green non-sulphur bacteria), and in the newly discovered aerobic phototroph, Candidatus Chloracidobacterium thermophilum (Cab. (springer.com)
  • The bacteria species belonging to Chlorobi, Chloroflexi, Bacteroidetes, Proteobacterium, Nitrosomonas and Armatimonadetes are the common accompanying bacteria with Plantomycetes in anammox consortia, serving as core microorganisms. (omicsonline.org)
  • Desulfobacter and Desulfobulbus), while the analysis of 16S rRNA, aprA, and pufM genes assigned the sulfur-oxidizing bacteria community to the photosynthetic representatives belonging to the Chlorobi (green sulfur bacteria) and the Proteobacteria (purple sulfur and non sulfur bacteria) phyla. (benran.ru)
  • These are traits otherwise found only in the green sulfur Bacteria (Chlorobi), and it is likely that the genes encoding these were acquired by Chloroflexus by horizontal transfer. (ncsu.edu)
  • To date, despite a long evolutionary history, species containing (bacterio)chlorophyll-based reaction centers have been reported in only 6 out of more than 30 formally described bacterial phyla: Cyanobacteria, Proteobacteria, Chlorobi, Chloroflexi, Firmicutes, and Acidobacteria. (pnas.org)
  • These chlorosomes resemble those of the Chlorobi (see below), but phototrophy in Chloroflexi otherwise resembles that of typical purple bacterial photosynthesis. (ncsu.edu)
  • Analyses of the 16S rRNA revealed a relatively high microbial diversity where Proteobacteria, Chlorobi, Bacteroidetes, and Cyanobacteria constitute the major bacterial groups. (benran.ru)
  • The genome of a member of the phylum Chlorobi was assembled from a shotgun metagenomic sequence of a hot spring in Mammoth Lakes, CA. This organism appears to be a novel, aerobic, photosynthetic Chlorobi member, expanding the knowledge of this underrepresented phylum. (asm.org)
  • [1] This phylum is sometimes grouped with Chlorobi , Fibrobacteres , Gemmatimonadates , Caldithrix , and marine group A to form the FCB group or superphylum. (wikipedia.org)
  • Although Fibrobacteres , which consists of a single genus Fibrobacter containing two species, is currently recognized as a distinct phylum, phylogenetic studies based RpoC and Gyrase B protein sequences, indicate that Fibrobacter succinogenes is closely related to the species from the phyla Bacteroidetes and Chlorobi . (eol.org)
  • Este filo agrúpase ás veces con Chlorobi , Fibrobacteres , Gemmatimonadetes , Caldithrix e o grupo mariño A para formar o grupo FCB ou superfilo. (wikipedia.org)
  • In addition, other genes associated with the production of bacteriochlorophyll and chlorosomes common to the Chlorobi were also present. (asm.org)
  • Chromosomal synteny of genes is not preserved in the phylum Chlorobi. (dtu.dk)
  • These can be discrete disks like the chlorosomes of Chlorobi, or concentric layers of thylakoid membrane around the periphery of the cell. (ncsu.edu)
  • This draft genome, therefore, represents a potentially novel genus within the Chlorobi . (asm.org)
  • The genome sequenced represents a potentially deep branching member of the Chlorobi and provides crucial data to this underrepresented group of microorganisms. (asm.org)
  • The SAM-Chlorobi RNA motif is a conserved RNA structure that was identified by bioinformatics. (wikipedia.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)
  • 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)
  • Phototrophic species are green or orange en masse, the color depending of which photopigments are produced. (ncsu.edu)
  • Aerobic members of the Chlorobi have recently been described, but only through metagenomic approaches ( 2 ). (asm.org)
  • abstract = "Eleven completely sequenced Chlorobi genomes were compared in oligonucleotide usage, gene contents, and synteny. (dtu.dk)
  • In addition, we present a formal description of the phylum-level taxon 'Chlorobi' as Chlorobi phyl. (microbiologyresearch.org)
  • phylum Chlorobi , family Chlorobiaceae ). (asm.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)