Rhodobacter sphaeroides
Chloroflexus
Photosynthetic Reaction Center Complex Proteins
Protein complexes that take part in the process of PHOTOSYNTHESIS. They are located within the THYLAKOID MEMBRANES of plant CHLOROPLASTS and a variety of structures in more primitive organisms. There are two major complexes involved in the photosynthetic process called PHOTOSYSTEM I and PHOTOSYSTEM II.
Light-Harvesting Protein Complexes
Chlorobi
Bacterial Chromatophores
Chlorophyll
Photosynthesis
The synthesis by organisms of organic chemical compounds, especially carbohydrates, from carbon dioxide using energy obtained from light rather than from the oxidation of chemical compounds. Photosynthesis comprises two separate processes: the light reactions and the dark reactions. In higher plants; GREEN ALGAE; and CYANOBACTERIA; NADPH and ATP formed by the light reactions drive the dark reactions which result in the fixation of carbon dioxide. (from Oxford Dictionary of Biochemistry and Molecular Biology, 2001)
Roseovarius tolerans gen. nov., sp. nov., a budding bacterium with variable bacteriochlorophyll a production from hypersaline Ekho Lake. (1/358)
Eight Gram-negative, aerobic, pointed and budding bacteria were isolated from various depths of the hypersaline, heliothermal and meromictic Ekho Lake (Vestfold Hills, East Antarctica). The cells contained storage granules and daughter cells could be motile. Bacteriochlorophyll a was sometimes produced, but production was repressed by constant dim light. The strains tolerated a wide range of temperature, pH, concentrations of artificial seawater and NaCl, but had an absolute requirement for sodium ions. Glutamate was metabolized with and without an additional source of combined nitrogen. The dominant fatty acid was C18:1; other characteristic fatty acids were C18:2, C12:0 2-OH, C12:1 3-OH, C16:1, C16:0 and C18:0. The main polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol and phosphatidylcholine. The DNA G+C base composition was 62-64 mol%. 16S rRNA gene sequence comparisons showed that the isolates were phylogenetically close to the genera Antarctobacter, 'Marinosulfonomonas', Octadecabacter, Sagittula, Sulfitobacter and Roseobacter. Morphological, physiological and genotypic differences to these previously described and distinct genera support the description of a new genus and a new species, Roseovarius tolerans gen. nov., sp. nov. The type strain is EL-172T (= DSM 11457T). (+info)Rubrimonas cliftonensis gen. nov., sp. nov., an aerobic bacteriochlorophyll-containing bacterium isolated from a saline lake. (2/358)
Phenotypic and phylogenetic studies were performed with two strains (OCh 317T and OCh 318; T = type strain) of aerobic chemoheterotrophic bacteriochlorophyll-containing bacteria isolated from water of a saline lake located on the west coast of Australia. Both strains were Gram-negative, short rods and were motile by means of polar flagella. Catalase, oxidase, nitrate reductase, phosphatase and urease were produced. The cells utilized D-glucose, citrate, glycolate, pyruvate and ethanol. Acids were produced from L-arabinose, D-fructose, D-galactose, D-glucose, D-ribose and D-xylose. The strains could grow in media containing 0.5-7.5% NaCl. Bacteriochlorophyll a was synthesized under aerobic conditions. The results of 16S rRNA gene sequence comparisons revealed that strain OCh 317T represented a new lineage in the alpha-3 group of the class Proteobacteria. Strains OCh 317T and OCh 318 were identified as strains of the same species because of their very similar phenotypic characteristics and their previously described high DNA-DNA homology. Therefore, it was concluded that the two strains should be assigned to a new genus and species, for which the name Rubrimonas cliftonensis is proposed. The type strain is OCh 317T (= JCM 10189T). (+info)Multiple pathways for ultrafast transduction of light energy in the photosynthetic reaction center of Rhodobacter sphaeroides. (3/358)
A pathway of electron transfer is described that operates in the wild-type reaction center (RC) of the photosynthetic bacterium Rhodobacter sphaeroides. The pathway does not involve the excited state of the special pair dimer of bacteriochlorophylls (P*), but instead is driven by the excited state of the monomeric bacteriochlorophyll (BA*) present in the active branch of pigments along which electron transfer occurs. Pump-probe experiments were performed at 77 K on membrane-bound RCs by using different excitation wavelengths, to investigate the formation of the charge separated state P+HA-. In experiments in which P or BA was selectively excited at 880 nm or 796 nm, respectively, the formation of P+HA- was associated with similar time constants of 1.5 ps and 1. 7 ps. However, the spectral changes associated with the two time constants are very different. Global analysis of the transient spectra shows that a mixture of P+BA- and P* is formed in parallel from BA* on a subpicosecond time scale. In contrast, excitation of the inactive branch monomeric bacteriochlorophyll (BB) and the high exciton component of P (P+) resulted in electron transfer only after relaxation to P*. The multiple pathways for primary electron transfer in the bacterial RC are discussed with regard to the mechanism of charge separation in the RC of photosystem II from higher plants. (+info)Kinetics of photoacclimation in cultures of Chromatium vinosum DSM 185 during shifts in light irradiance. (4/358)
Continuous cultures of Chromatium vinosum DSM 185 were shifted from a high to a low irradiance (67 to 4 microE m(-2) s(-1)) and vice versa (4 to 67 microE m(-2) s(-1)). The kinetics of photoacclimation of the cultures were analysed during these transitions until steady state was reached. When irradiance was shifted from 4 to 67 microE m(-2) s(-1), bacteriochlorophyll synthesis halted for 4 h. During this period, pigments were progressively diluted in the newly formed biomass, resulting in a lower specific pigment content. The specific growth rate of the organisms did not change immediately after the shift, but rather underwent a gradual increase during the following 10 h. This transition was accompanied by a transient increase in the levels of glycogen, indicating that CO2 fixation rates increased immediately after the shift, and that unused photosynthate was stored as glycogen. The shift from a high to a low irradiance was characterized by an immediate drop in the specific growth rate to virtually zero, and by comparatively sharp decreases in the specific rates of sulfur and sulfide oxidation and in the specific rate of glycogen accumulation. The specific content of bacteriochlorophyll a increased during the first 10 h. During the same period the specific content of glycogen decreased. (+info)Roseateles depolymerans gen. nov., sp. nov., a new bacteriochlorophyll a-containing obligate aerobe belonging to the beta-subclass of the Proteobacteria. (5/358)
Strains 61AT (T = type strain) and 61B2, the first bacteriochlorophyll (BChl) a-containing obligate aerobes to be classified in the beta-subclass of the Proteobacteria, were isolated from river water. The strains were originally isolated as degraders of poly(hexamethylene carbonate) (PHC). The organisms can utilize PHC and some other biodegradable plastics. The strains grow only under aerobic conditions. Good production of BChl a and caroterioid pigments is achieved on PHC agar plates and an equivalent production is observed under oligotrophic conditions on agar medium. Spectrometric results suggest that BChl a is present in light-harvesting complex I and the photochemical reaction centre. The main carotenoids are spirilloxanthin and its precursors. Analysis of the 16S rRNA gene sequence indicated that the phylogenetic positions of the two strains are similar to each other and that their closest relatives are the genera Rubrivivax, ideonella and Leptothrix with similarities of 96.3, 96.2 and 96.1%, respectively. The cells are motile, straight rods and contain poly-beta-hydroxybutyrate granules. Ubiquinone-8 is the predominant quinone. Vitamins are not required for growth. The G + C content of genomic DNA is 66.2-66.3 mol%. Genetic and phenotypic features suggest that the strains represent a new genus in the beta-subclass which is evenly distant from known genera. Consequently, the name Roseateles depolymerans gen. nov., sp. nov. is proposed for the strains; the type strain of Roseateles depolymerans is strain 61AT (= DSM 11813T). (+info)Roseivivax halodurans gen. nov., sp. nov. and Roseivivax halotolerans sp. nov., aerobic bacteriochlorophyll-containing bacteria isolated from a saline lake. (6/358)
Phenotypic and phylogenetic studies were performed with two strains (OCh 239T and OCh 210T, T = type strain) of aerobic bacteriochlorophyll-containing bacteria isolated from the charophytes and the epiphytes on the stromatolites, respectively, of a saline lake located on the west coast of Australia. Both strains were chemoheterotrophic, Gram-negative and motile rods with subpolar flagella. Catalase and oxidase were produced. ONPG reaction was positive. Cells utilized D-glucose, acetate, butyrate, citrate, DL-lactate, DL-malate, pyruvate, succinate, L-aspartate and L-glutamate. Acids were produced from D-fructose and D-glucose. Bacteriochlorophyll a was synthesized under aerobic conditions. Strain OCh 239T had nitrate reductase and phosphatase. Acids were produced from L-arabinose, D-galactose, lactose, maltose, D-ribose and sucrose. The strain could grow in 0-20.0% (w/v) NaCl. Strain OCh 210T had urease. Hydrolysis of gelatin was positive. Acids were produced from D-xylose. The strain could grow in 0.5-20.0% (w/v) NaCl. The results of 16S rRNA sequence comparisons revealed that strains OCh 239T and OCh 210T formed a new cluster within the alpha-3 group of the alpha subclass of the class Proteobacteria. The similarity value of the 16S rRNA sequences between strains OCh 239T and OCh 210T was 95.8%. Therefore, it was concluded that these two strains should be placed in a new genus, Roseivivax gen. nov., as the new species Roseivivax halodurans sp. nov. and Roseivivax halotolerans sp. nov. The type species of the genus is Roseivivax halodurans. The type strains of Roseivivax halodurans and Roseivivax halotolerans are OCh 239T (= JCM 10272T) and OCh 210T (= JCM 10271T), respectively. (+info)Thiorhodospira sibirica gen. nov., sp. nov., a new alkaliphilic purple sulfur bacterium from a Siberian soda lake. (7/358)
A new purple sulfur bacterium was isolated from microbial films on decaying plant mass in the near-shore area of the soda lake Malyi Kasytui (pH 9.5, 0.2% salinity) located in the steppe of the Chita region of south-east Siberia. Single cells were vibrioid- or spiral-shaped (3-4 microns wide and 7-20 microns long) and motile by means of a polar tuft of flagella. Internal photosynthetic membranes were of the lamellar type. Lamellae almost filled the whole cell, forming strands and coils. Photosynthetic pigments were bacteriochlorophyll a and carotenoids of the spirilloxanthin group. The new bacterium was strictly anaerobic. Under anoxic conditions, hydrogen sulfide and elemental sulfur were used as photosynthetic electron donors. During growth on sulfide, sulfur globules were formed as intermediate oxidation products. They were deposited outside the cytoplasm of the cells, in the peripheral periplasmic space and extracellularly. Thiosulfate was not used. Carbon dioxide, acetate, pyruvate, propionate, succinate, fumarate and malate were utilized as carbon sources. Optimum growth rates were obtained at pH 9.0 and optimum temperature was 30 degrees C. Good growth was observed in a mineral salts medium containing 5 g sodium bicarbonate l-1 without sodium chloride. The new bacterium tolerated up to 60 g sodium chloride l-1 and up to 80 g sodium carbonates l-1. Growth factors were not required. The DNA G + C composition was 56.0-57.4 mol%. Based on physiological, biochemical and genetic characteristics, the newly isolated bacterium is recognized as a new species of a new genus with the proposed name Thiorhodospira sibirica. (+info)Bacteriochlorin-protein interactions in native B800-B850, B800 deficient and B800-Bchla(p)-reconstituted complexes from Rhodopseudomonas acidophila, strain 10050. (8/358)
Recently, a method which allows the selective release and removal of the 800 nm absorbing bacteriochlorophyll a (B800) molecules from the LH2 complex of Rhodopseudomonas acidophila strain 10050 has been described [Fraser, N.J. (1999) Ph.D. Thesis, University of Glasgow, UK]. This procedure also allows the reconstitution of empty binding sites with the native pigment Bchla(p), esterified with phytol. We have investigated the bacteriochlorophylla-protein interactions in native, B800 deficient (or B850) and in B8110-bacteriochlorophylla(p)-reconstituted LH2 complexes by resonance Raman spectroscopy. We present the first direct structural evidence which shows that the reconstituted pigments are correctly bound within their binding pockets. (+info)
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Bacteriochlorophyll
Structures of some bacteriochlorophylls bacteriochlorophyll a bacteriochlorophyll b bacteriochlorophyll c bacteriochlorophyll d ... bacteriochlorophyll e bacteriochlorophyll f bacteriochlorophyll g Bacteriochlorophylls a, b, and g are bacteriochlorins, ... Bacteriochlorophyll g has a vinyl group in ring (A). There are a large number of known bacteriochlorophylls but all have ... "In Vivo Energy Transfer from Bacteriochlorophyll c , d , e , or f to Bacteriochlorophyll a in Wild-Type and Mutant Cells of the ...
Chromophore
Scheer, Hugo (2006). "An Overview of Chlorophylls and Bacteriochlorophylls: Biochemistry, Biophysics, Functions and ... Applications". Chlorophylls and Bacteriochlorophylls. Advances in Photosynthesis and Respiration. Vol. 25. pp. 1-26. doi: ...
Chlorophyll
Bacteriochlorophyll, related compounds in phototrophic bacteria Chlorophyllin, a semi-synthetic derivative of chlorophyll Deep ... Scheer H (2006). "An Overview of Chlorophylls and Bacteriochlorophylls: Biochemistry, Biophysics, Functions and Applications". ... Chlorophylls and Bacteriochlorophylls. Advances in Photosynthesis and Respiration. Vol. 25. pp. 1-26. doi:10.1007/1-4020-4516-6 ...
Chlorophyllide a reductase
It is a component of the biosynthetic pathway to bacteriochlorophylls. Biosynthesis of bacteriochlorophylls Harada, Jiro; ... R. Caspi (2015-12-08). "Pathway: bacteriochlorophyll a biosynthesis". MetaCyc Metabolic Pathway Database. Retrieved 2020-06-04 ... "Chlorophyllide a Oxidoreductase Works as One of the Divinyl Reductases Specifically Involved in Bacteriochlorophyll a ... gives the characteristic 18-electron aromatic system that distinguishes bacteriochlorophylls from chlorophylls, which retain ...
Tetradentate ligand
Bacteria may use variants called bacteriochlorophylls. Schneider, Peter W.; Collman, James P. (October 1968). "Complexes of ...
Chlorophyllide
The phytyl ester of bacteriochlorophyll a is not attached directly: rather, the initial intermediate is the ester with R= ... Chlorophyll b is made by the same enzyme acting on chlorophyllide b. Bacteriochlorophylls are the light harvesting pigments ... Chlorophyllide a is also an intermediate in the biosynthesis of bacteriochlorophylls. Chlorophyllide a, is a carboxylic acid (R ... doi:10.1007/0-306-47954-0_8. ISBN 0-7923-3681-X. R. Caspi (2015-12-08). "Pathway: bacteriochlorophyll a biosynthesis". MetaCyc ...
Erythrobacter longus
It contains bacteriochlorophyll a. It is motile by means of subpolar flagella. Its type strain is OCh101 (= IFO 14126). Shiba, ... nov., an Aerobic Bacterium Which Contains Bacteriochlorophyll a". International Journal of Systematic Bacteriology. 32 (2): 211 ... Shimada, Keizo; Hayashi, Hidenori; Tasumi, Mitsuo (1985). "Bacteriochlorophyll-protein complexes of aerobic bacteria, ...
Roseobacter denitrificans
It contains Bacteriochlorophyll a. It contains spheroidenone, does not synthesize bacteriochlorophyll anaerobically, but shows ... nov., Aerobic Pink-Pigmented Bacteria which Contain Bacteriochlorophyll a". Systematic and Applied Microbiology. 14 (2): 140- ...
Roseobacter litoralis
It contains Bacteriochlorophyll a. It contains spheroidenone, does not synthesize bacteriochlorophyll anaerobically, but shows ... nov., Aerobic Pink-Pigmented Bacteria which Contain Bacteriochlorophyll a". Systematic and Applied Microbiology. 14 (2): 140- ...
Chlorobaculum tepidum
They contain bacteriochlorophyll c and chlorosomes. Chlorobaculum tepidum contains a genome that contains 2.15 Mbp. There are a ... Frigaard NU, Voigt GD, Bryant DA (June 2002). "Chlorobium tepidum mutant lacking bacteriochlorophyll c made by inactivation of ... eds.). Chlorophylls and Bacteriochlorophylls: Biochemistry, Biophysics, Functions and Applications. Vol. 25. Springer. 201-221 ... It synthesizes chlorophyll a and bacteriochlorophylls (BChls) a and c and is a model organism used to elucidate the ...
Chlorophyll c
Zapata M, Garrido JL, Jeffrey SW (2006). "Chlorophyll c Pigments: Current Status". Chlorophylls and Bacteriochlorophylls: ...
Chromatophore (bacteria)
Chromatophores contain bacteriochlorophyll pigments and carotenoids. In purple bacteria, such as Rhodospirillum rubrum, the ...
Light-harvesting complex
Purple bacteria use bacteriochlorophyll and carotenoids to gather light energy. These proteins are arranged in a ring-like ... Their form of bacteriochlorophyll is green. Chlorophylls and carotenoids are important in light-harvesting complexes present in ...
Photoautotrophism
Both of these photosystems use bacteriochlorophyll. There are multiple hypotheses for how oxygenic photosynthesis evolved. The ... the chlorophyll molecules in their chloroplasts while prokaryotic photoautotrophs use chlorophylls and bacteriochlorophylls ...
Chromatiaceae
Bacteriochlorophylls and carotenoids are part of the light-harvesting complex; together with the reaction center, this one ... Most of them have bacteriochlorophyll a, with a maximum absorption wavelength of 800-900 nm, and a number of species uniquely ... nov., a novel purple sulfur bacterium with bacteriochlorophyll b." International Journal of Systematic and Evolutionary ... and Isochromatium spp.) and bacteriochlorophyll b-containing genera (Thiococcus spp., Thioflavicoccus spp. and Thioalkalicoccus ...
Chlorosome
Bacteriochlorophyll and carotenoids are two molecules responsible for harvesting light energy. Current models of the ... The composition of the chlorosomes is mostly bacteriochlorophyll (BChl) with small amounts of carotenoids and quinones ... Recently, another study has determined the organization of the bacteriochlorophyll molecules in green sulfur bacteria. Because ... "Alternating syn-anti bacteriochlorophylls form concentric helical nanotubes in chlorosomes". Proceedings of the National ...
Green sulfur bacteria
Electron donors include H2, H2S, S. The major photosynthetic pigment in these bacteria is Bacteriochlorophylls c or d in green ... The GSB reaction centers contain bacteriochlorophyll a and are known as P840 reaction centers due to the excitation wavelength ... Energy production from both sulfide oxidation and photon absorption via bacteriochlorophylls. The majority of green sulfur ... have a peak absorption in the far red region of the spectrum between 720 and 750 nm because they contain bacteriochlorophyll c ...
Chlorophyll a
These organisms use bacteriochlorophyll and some chlorophyll a but do not produce oxygen. Anoxygenic photosynthesis is the term ... The porphyrin ring of bacteriochlorophyll is saturated, and lacking alternation of double and single bonds causing variation in ... "Singlet and triplet excited state properties of natural chlorophylls and bacteriochlorophylls". Photosynthesis Research. 106 (3 ...
Roseiflexus castenholzii
The majority of these pigments are bacteriochlorophyll (BChl). The reaction center in Roseiflexus castenholzii is closely ...
Fenna-Matthews-Olson complex
Tronrud, D.E.; Schmid, M.F.; Matthews, B.W. (April 1986). "Structure and X-ray amino acid sequence of a bacteriochlorophyll a ... Pearlstein, Robert M. (1992). "Theory of the optical spectra of the bacteriochlorophyll an antenna protein trimer from ... Fenna, R. E.; Matthews, B. W. (1975). "Chlorophyll arrangement in a bacteriochlorophyll protein from Chlorobium limicola". ... Each of the three monomers contains eight bacteriochlorophyll a (BChl a) molecules. They are bound to the protein scaffold via ...
Magnesium-protoporphyrin IX monomethyl ester (oxidative) cyclase
"Origin of the Two Carbonyl Oxygens of Bacteriochlorophyll a. Demonstration of two Different Pathways for the Formation of Ring ...
Biological pigment
Purple sulfur bacteria produce bacteriochlorophyll a and bacteriochlorophyll b. In cyanobacteria, many other carotenoids exist ...
Blastomonas
nov., a bacteriochlorophyll-containing bacterium isolated from lake water". International Journal of Systematic and ...
Roseococcus thiosulfatophilus
It is an obligately aerobic, bacteriochlorophyll a-containing bacteria. Yurkov, V.; Stackebrandt, E.; Holmes, A.; Fuerst, J. A ... Bacteriochlorophyll a-Containing Bacteria and Description of Roseococcus thiosulfatophilus gen. nov., sp. nov., ... the aerobic bacteria Roseococcus thiosulfatophilus RB3 and Erythromicrobium ramosum E5 is not bound to the bacteriochlorophyll ...
Craurococcus
nov., novel aerobic bacteriochlorophyll a-containing bacteria from soil". International Journal of Systematic Bacteriology. 48 ...
Roseobacter
nov., aerobic pink-pigmented bacteria which contain bacteriochlorophyll a". Syst. Appl. Microbiol. 14 (2): 140-145. doi:10.1016 ... both pink-pigmented bacteriochlorophyll a-producing strains isolated from marine algae. The role members of the Roseobacter ...
Brian Matthews (biochemist)
Fenna RE, Matthews BW (1975). "Chlorophyll arrangement in a bacteriochlorophyll protein from Chlorobium limicola". Nature. 258 ... and the light-antenna bacteriochlorophyll protein. Beyond his contributions to biochemistry, Matthews is also known in the ...
Erythrobacter ramosus
It is an obligately aerobic, bacteriochlorophyll a-containing bacteria. Parte, A.C. "Erythromicrobium". LPSN. Yurkov, V.; ... Yurkov, V. "Gad'on N, Angerhofer A, Drews G (1994) Light harvesting complexes of aerobic bacteriochlorophyll-containing ... Bacteriochlorophyll a-Containing Bacteria and Description of Roseococcus thiosulfatophilus gen. nov., sp. nov., ... E5 and the transfer of excitation energy from carotenoids to bacteriochlorophyll." Z Naturforsch 49: 579-586. "Erythrobacter ...
Heliothrix oregonensis
... is a phototrophic filamentous, gliding bacterium containing bacteriochlorophyll a that is aerotolerant ... nov., a phototrophic filamentous gliding bacterium containing bacteriochlorophyll a". Archives of Microbiology. 142 (2): 164- ...
Blastomonas aquatica
nov., a bacteriochlorophyll-containing bacterium isolated from lake water". International Journal of Systematic and ... Blastomonas aquatica is a Gram-negative, bacteriochlorophyll-containing and aerobic bacteria from the genus of Blastomonas ...
PICOSECOND KINETICS OF EVENTS LEADING TO REACTION CENTER BACTERIOCHLOROPHYLL OXIDATION. - Nokia Bell Labs
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Generation and quenching of singlet molecular oxygen by aggregated bacteriochlorophyll d in model systems and chlorosomes<...
keywords = "bacteriochlorophyll d, bacteriochlorophyll d dimers and oligomers, bacteriochlorophyll d triplet state, chlorosomes ... Generation and quenching of singlet molecular oxygen by aggregated bacteriochlorophyll d in model systems and chlorosomes. In: ... Generation and quenching of singlet molecular oxygen by aggregated bacteriochlorophyll d in model systems and chlorosomes. ... Dive into the research topics of Generation and quenching of singlet molecular oxygen by aggregated bacteriochlorophyll d in ...
Photosensitization of TiO2 and SnO2 by artificial self-assembling mimics of the natural chlorosomal bacteriochlorophylls<...
Photosensitization of TiO2 and SnO2 by artificial self-assembling mimics of the natural chlorosomal bacteriochlorophylls. In: ... Photosensitization of TiO2 and SnO2 by artificial self-assembling mimics of the natural chlorosomal bacteriochlorophylls. / ... Photosensitization of TiO2 and SnO2 by artificial self-assembling mimics of the natural chlorosomal bacteriochlorophylls. ... Photosensitization of TiO2 and SnO2 by artificial self-assembling mimics of the natural chlorosomal bacteriochlorophylls. ...
Complete genome sequence of the photoautotrophic and bacteriochlorophyll e-synthesizing green sulfur bacterium Chlorobaculum...
Complete genome sequence of the photoautotrophic and bacteriochlorophyll e-synthesizing green sulfur bacterium Chlorobaculum ... Complete genome sequence of the photoautotrophic and bacteriochlorophyll e-synthesizing green sulfur bacterium Chlorobaculum ... Complete genome sequence of the photoautotrophic and bacteriochlorophyll e-synthesizing green sulfur bacterium Chlorobaculum ...
Dynamic Exchange Properties of the Antiparallel Bacteriochlorophyll c Dimers<...
Umetsu M, Seki R, Kadota T, Wang ZY, Adschiri T, Nozawa T. Dynamic Exchange Properties of the Antiparallel Bacteriochlorophyll ... Dynamic Exchange Properties of the Antiparallel Bacteriochlorophyll c Dimers. In: Journal of Physical Chemistry B. 2003 ; Vol. ... Dynamic Exchange Properties of the Antiparallel Bacteriochlorophyll c Dimers. Mitsuo Umetsu, Ryoichi Seki, Tomoyuki Kadota, ... The dynamic exchange behavior of the (31R)-type bacteriochlorophyll (BChl) c dimer with an antiparallel piggy-back conformation ...
Pharmaceutics | Free Full-Text | Antitumor Immune Response Triggered by Metal-Based Photosensitizers for Photodynamic Therapy:...
In Chlorophylls and Bacteriochlorophylls; Grimm, B., Porra, R.J., Rüdiger, W., Scheer, H., Eds.; Advances in Photosynthesis and ... It is a negatively charged derivative of the photosynthetic pigment bacteriochlorophyll a (Bchl), a molecule that certain ... Brandis, A.S.; Salomon, Y.; Scherz, A. Bacteriochlorophyll Sensitizers in Photodynamic Therapy. ... a novel water-soluble bacteriochlorophyll derivative; cellular uptake, pharmacokinetics, biodistribution and vascular-targeted ...
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RCSB PDB - 1NKZ: Crystal structure of LH2 B800-850 from Rps. acidophila at 2.0 Angstrom resolution
BACTERIOCHLOROPHYLL A. C55 H74 Mg N4 O6. DSJXIQQMORJERS-RUUWGSCADZ. Ligand Interaction. ... B850 bacteriochlorophyll molecules are arranged in a ring of 18 pigments composed of nine approximate dimers. These pigments ... C-terminal residues of the alpha-chain and a carboxy modified alpha-Met1 which forms the ligand of the B800 bacteriochlorophyll ...
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Bacteriochlorophyll a is the major chlorophyll found in the turbidity layer,. but also chlorophyll a is present at the upper ... synthesis of bacteriochlorophyll by populations of Chromatium okenii under natural environ-. mental conditions. FEMS Microbial ... bacteria dominated by Chromatium okenii is located in the subsequent 2-m layer containing up to 200 mg bacteriochlorophyll ( ...
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Microbiome Structure in Biofilms From a Volcanic Island in Maritime Antarctica Investigated by Genome-Centric Metagenomics and...
In: Advances in Photosysnthesis and Respiration: Chlorophylls and Bacteriochlorophylls (eds Grimm, B; Porra, RJ; Rudiger, W; ... Scheer, H. In: Advances in Photosysnthesis and Respiration: Chlorophylls and Bacteriochlorophylls (eds Grimm, B; Porra, RJ; ... Senge, MO; Wiehe, A; Ryppa, C. In: Advances in Photosysnthesis and Respiration: Chlorophylls and Bacteriochlorophylls (eds ... Selective oxidation of B800 bacteriochlorophyll a in photosynthetic light-harvesting protein LH2. Scientific Reports. 9 (2019 ...
Periodic Report Summary - GENS (Genomic Approach to Study the Role of Bacterioplankton in the Sulfur Cycle) | FP7 | CORDIS |...
Professor Mark Dickman | CBE | The University of Sheffield
Using Nature 's Designs to Build a Better Mousetrap - Reasons to Believe
Flashcards - Microbiology Exam 2
bacteriochlorophyll*anaerobic*anoxygenic*H2S as e- source*deposit S outside cell*rods, cocci, or vibrios ... Anaerobic - photoorganoheterotroph, bacteriochlorophyll, organic molecules as e- & C source*Aerobic w/ no light - no ... bacteriochlorophyll*anoxygenic*thermophillic*organic molecules as e- source*filamentous (gliding motility)*Chloroflex ...
Biochemistry & Molecular Biology - Research output - Penn State
Comparing the photophysics of the two forms of the Orange Carotenoid Protein using 2D electronic spectroscopy | EPJ Web of...
Jasaitis A. - сотрудник | ИСТИНА - Интеллектуальная Система Тематического Исследования НАукометрических данных
MH DELETED MN ADDED MN
Journal of Biophysics and Structural Biology - December 2009 edition
Awesome Cool Words That Start with B - Your Info Master
BChlBiosynthesisMoleculesPigmentsAbsorbsPigmentBacteriaAerobicReactionElectronStatePropertiesCarotenoidsCarotenoid-to-bacteriochlorophyllChlorophyll and bacteriochlorophyllChlorophylls and bacteriochlorophyllsProteinProteinsPrimary electron donorProkaryotesBacteriopheophytinAerobicPhotosensitizerAbsorptionBacteriumEnzymeVivoLigandDerivativeEnergyStructureControlImportantFound
BChl3
- Both photogeneration and quenching of singlet oxygen by monomeric and aggregated (dimeric and oligomeric) molecules of bacteriochlorophyll (BChl) d have been studied in solution and in chlorosomes isolated from the green photosynthetic bacterium Chlorobium vibrioforme f. thiosulfatophilum. (elsevier.com)
- The dynamic exchange behavior of the (3 1 R)-type bacteriochlorophyll (BChl) c dimer with an antiparallel piggy-back conformation has been investigated by two-dimensional nuclear magnetic resonance exchange spectroscopy (EXSY). (elsevier.com)
- and two direct photoheterotrophic mechanisms in which bacteria obtain energy through bacteriochlorophyll a (Bchl a) and proteorhodospin (prho) generated ion fluxes (electrons and protons, respectively). (europa.eu)
Biosynthesis3
- The ahcY mutant, when grown in supplementedmedium, synthesizes significantly reduced levels of bacteriochlorophyll,indicating that modulation of the intracellular ratio ofS-adenosyl-L-methionine to S-adenosyl-L-homocysteine may be an importantfactor in regulating bacteriochlorophyll biosynthesis. (embl-heidelberg.de)
- Nomata, J., Mizoguchi, T., Tamiaki, H. and Fujita, Y. A second nitrogenase-like enzyme for bacteriochlorophyll biosynthesis: reconstitution of chlorophyllide a reductase with purified X-protein (BchX) and YZ-protein (BchY-BchZ) from Rhodobacter capsulatus . (enzyme-database.org)
- were observed in all six samples and contained genes involved in bacteriochlorophyll biosynthesis and the 3-hydroxypropionate carbon fixation pathway. (montana.edu)
Molecules2
- Of all known photosynthetic organisms, the green sulfur bacteria are able to survive under the lowest illumination conditions due to highly efficient photon management and exciton transport enabled by their special organelles, the chlorosomes, which consist mainly of self-assembled bacteriochlorophyll c, d, or e molecules. (utwente.nl)
- B850 bacteriochlorophyll molecules are arranged in a ring of 18 pigments composed of nine approximate dimers. (rcsb.org)
Pigments2
- The pulsed electric field linear dichroism technique is utilized to study the orientations of pigments in antenna bacteriochlorophyll-protein and reaction center complexes, and chromatophores isolated from the photosynthetic bacterium Rhodopseudomonas spheroides. (nyu.edu)
- These bacteria contain chlorophyll pigments that are called as bacteriochlorophyll. (askmicrobiology.com)
Absorbs1
- These bacteriochlorophyll absorbs the longer wavelength light and converts it into chemical energy. (askmicrobiology.com)
Pigment1
- Numerous kinetic data for excitation energy decay in bacteriochlorophylls as well as extremely short lifetimes of excitations in dominating chlorosoma pigment exclude the possibility of an efficient migration of this energy from chlorosoma to the main intra-membrane photosystem of some green bacteria. (academicjournals.org)
Bacteria1
- nov., aerobic bacteriochlorophyll-containing bacteria isolated from a saline lake. (dsmz.de)
Aerobic1
- nov., aerobic bacteriochlorophyll-con- egaly, a nontender renal transplant, were subsequently R. conorii positive. (cdc.gov)
Reaction1
- EPR and optical spectroscopic properties of the electron carrier intermediate between the reaction center bacteriochlorophylls and the primary acceptor in Chromatium vinosum. (semanticscholar.org)
Electron3
- In the present work we have studied exciton transport and dissociation in a bilayer of an electron-accepting semiconductor and an artificial self-assembling zinc porphyrin that mimics natural chlorosomal bacteriochlorophylls using time-resolved microwave conductivity (TRMC). (utwente.nl)
- The electron density reveals a second carotenoid molecule, the last five C-terminal residues of the alpha-chain and a carboxy modified alpha-Met1 which forms the ligand of the B800 bacteriochlorophyll. (rcsb.org)
- Under such conditions, charge separation between the primary electron donor (bacteriochlorophyll dimer, P) and the electron acceptor (bacteriopheophytin, HA) was followed by P+HA- → PHA charge recombination. (bris.ac.uk)
State1
- The modeling included the energetic relaxation of the charge-separated states caused by protein dynamics and evidenced the appearance of an intermediate charge-separated state, P+BA-, with BA being the bacteriochlorophyll located between P and HA. (bris.ac.uk)
Properties1
- Connolly, J. S., E. B. Samuel and A. F. Janzen (1982) Effects of solvent on the fluorescence properties of bacteriochlorophyll α. (photochemcad.com)
Carotenoids5
- The carotenoids quench the bacteriochlorophylls' triplet states and, as a result, electronic excitation of O 2 is prevented and with it the damaging properties of this compound in its reactive singlet form. (uiuc.edu)
- Energy transfer between carotenoids and bacteriochlorophylls in a light harvesting protein. (uiuc.edu)
- The pigment binding proteins encoded by the puc and puf operons assemble with bacteriochlorophyll and carotenoids to seize mild power. (casinokingschance.com)
- Spectral analysis suggested the presence of bacteriochlorophyll a and carotenoids pigments peaks. (uprm.edu)
- The cells contain bacteriochlorophyll a and carotenoids, both of which are located on the cystic intima. (microbialtec.com)
Carotenoid-to-bacteriochlorophyll2
- Spectroscopic studies of carotenoid-to-bacteriochlorophyll energy transfer in LHRC photosynthetic complex from Roseiflexus castenholzii. (doximity.com)
- This specific response might support adaptation by maintaining high carotenoid-to-bacteriochlorophyll ratios and preventing the accumulation of porphyrin-derived photosensitizers. (helmholtz-hzi.de)
Chlorophyll and bacteriochlorophyll3
- Caption: Figure 1: The connection between the molecular, energetic, and spectral characteristics of the chlorophyll and bacteriochlorophyll molecules. (thefreedictionary.com)
- For comparison, the free energy of 1 mole photon with the wavelength of 660 nm and 800 nm (wavelengths that are characteristic to chlorophyll and bacteriochlorophyll absorption, resp. (thefreedictionary.com)
- 1996. Evolution of chlorophyll and bacteriochlorophyll: the problem of invariant sites in sequence analysis. (icprs.ru)
Chlorophylls and bacteriochlorophylls14
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- The molecular structure of naturally existing dyes like chlorophylls and bacteriochlorophylls could be modified tailoring their photophysical properties. (icddt.com)
- Buku Chlorophylls and Bacteriochlorophylls ISBN 13 978-1-4020-4516 -8 (hal. (machung.ac.id)
Protein5
- Bacteriochlorophyll is a large, complicated protein, and can be used to illustrate the various problems in hydrogenation, and the different steps in resolving them. (openmopac.net)
- So the original PDB file downloaded from the Protein Data Bank is stored in the file "Bacteriochlorophyll (4BCL).ent" By using the alternative suffix ".ent" there is no danger that the original file could be accidentally modified by MOPAC. (openmopac.net)
- Sunlight absorbed by bacteriochlorophyll (green) within the FMO protein (gray) generates a wavelike motion of excitation energy whose quantum mechanical properties can be mapped through the use of two-dimensional electronic spectroscopy. (nextbigfuture.com)
- Stable photobleaching of P480 in Chlorobium reaction center preparations: presence of the 42-kDa bacteriochlorophyll a protein and a 17-kDa polypeptide. (itwreagents.com)
- An ancestral reaction center of Photosystem I and II (RCI/II) type of photosynthesis arose in which a membrane-spanning helix (MSH) protein bound two molecules of chlorophyll/bacteriochlorophyll in a special pair and had a Chl/quinone primary acceptor. (semanticscholar.org)
Proteins1
- If there's no oxygen around and the bacterium is safe, the bacterium uses vibronic mixing by matching the energy difference between two electronic states in an assembly of molecules and proteins called the FMO complex, with the energy of the vibration of a bacteriochlorophyll molecule. (phys.org)
Primary electron donor1
- we have studied the backward electron transfer from the primary quinone acceptor, Q A -, to the oxidized primary electron donor, P + (a dimer of bacteriochlorophyll) under different conditions of salt concentration, lipid environment, viscosity and temperature. (researchtrends.net)
Prokaryotes1
- There are 5 significant chlorophylls: a, b, c as well as d, in addition to an associated particle discovered in prokaryotes called bacteriochlorophyll. (lukesnyderstudio.com)
Bacteriopheophytin1
- At elevated temperatures, the characteristic absorbance bands of the bacteriochlorins bound to the polypeptides within the reaction center are lost, and are replaced by features typical of unbound bacteriochlorophyll and bacteriopheophytin. (houstonmethodist.org)
Aerobic3
- Bacteriochlorophyll a was synthesized under aerobic conditions. (nih.gov)
- nov., the first aerobic bacteriochlorophyll a-containing fresh water bacterium in the genus Aquabacterium of the class Betaproteobacteria, Int. J. Syst. (go.jp)
- nov., a novel bacteriochlorophyll a -containing, obligately aerobic bacterium isolated from freshwater lakes. (microbiologyresearch.org)
Photosensitizer2
- Localisation and origin of the bacteriochlorophyll-derived photosensitizer in the retina of the deep-sea dragon fish Malacosteus niger. (kersti.de)
- Steba Biotech's flagship product, TOOKAD®, for treatment of prostate cancer, is a first-in-class photosensitizer derived from palladium-substituted bacteriochlorophyll and developed in collaboration with the Weizmann Institute. (yedarnd.com)
Absorption2
- Every bacteriochlorophyll has its characteristic absorption spectrum. (thefreedictionary.com)
- In studies designed to investigate the energetic and structural determinants of the charge separation process of photosynthesis, the residue tyrosine M210 (M210Y) has been changed to phenylalanine (M210YF), asparagine (M210YN) and serine (M210YS) in reaction centers of Rhodobacter sphaeroides (Ga). The optical absorption spectra showed that all three mutants have red shifts of the monomeric bacteriochlorophyll Qy band and the redox midpoint potential of the primary donor also varied. (illinois.edu)
Bacterium1
- The effect of the lack of bluB function in R. rubrum was reflected by the impaired ability of a DeltabluB strain to convert Mg-protoporphyrin IX monomethyl ester (MPE) into protochlorophylide, a reaction of the bacteriochlorophyll biosynthetic pathway catalyzed by the MPE-cyclase enzyme present in this bacterium (BchE, EC 1.14.13.81), a predicted coenzyme B(12)-dependent enzyme. (nih.gov)
Enzyme1
- The enzyme catalyzes the successive reduction of the geranylgeraniol esterifying group to phytol, reducing three out of four double bonds, and transforming geranylgeranyl bacteriochlorophyllide a via dihydrogeranylgeranyl bacteriochlorophyllide a and tetrahydrogeranylgeranyl bacteriochlorophyllide a to bacteriochlorophyll a. (expasy.org)
Vivo1
- Title: In vivo stability and photodynamic efficacy of fluorinated bacteriopurpurinimides derived from bacteriochlorophyll-a. (aablocks.com)
Ligand1
- In L and M chains, the first histidine is a ligand of the magnesium ion of the special pair bacteriochlorophyll, the second is a ligand of a ferrous non-heme iron atom. (expasy.org)
Derivative1
- The product is a bacteriochlorophyll derivative, which, after being activated by light, initiates a cascade of pathophysiologic events that result in the instantaneous occlusion of the entire tumor blood supply, followed by rapid ablation of tumor tissue, said principal investigator Abdel Rahmene Azzouzi, MD, a urologist from the University of Angers, France. (medscape.com)
Energy1
- Global target analysis of two-dimensional (2D) transient spectra revealed the main energy transfer pathways between carotenoid S 2 , 1B u - and S 1 states and bacteriochlorophyll Q x state. (princeton.edu)
Structure1
- A specific bacteriochlorophyll that is similar in structure to chlorophyll a. (nih.gov)
Control1
- Diastereoselective control of bacteriochlorophyll e aggregation. (tu-berlin.de)
Important1
- An important reaction in the structural elucidation of the bacteriochlorophylls is the dehydrogenation to chlorophyll derivatives. (chempedia.info)
Found1
- All the files used can be found in Files used in Hydrogenation of Bacteriochlorophyll .zip . (openmopac.net)