Results 81 to 90 of about 1,210 (138)
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Characterization and stability of hydrogenase from Chromatium
Biochimica Et Biophysica Acta - Biomembranes, 1980The absorption spectrum of the hydrogenase from Chromatium, which contains four iron atoms and four atoms of acid-labile sulfide, in 80% dimethylsulfoxide or hexamethylphosphoramide suggests the presence of a single [4Fe-4S] cluster. The EPR spectra of the oxidized enzyme in air, argon or carbon monoxide are the same with signals centered at g = 2.01 ...
B C Antanaitis +2 more
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Antenna organization in the purple sulfur bacteria Chromatium tepidum and Chromatium vinosum
Photosynthesis Research, 1996Structural aspects of the core antenna in the purple sulfur bacteria Chromatium tepidum and Chromatium vinosum were studied by means of fluorescence emission and singlet-singlet annihilation measurements. In both species the number of bacteriochlorophylls of the core antenna between which energy transfer can occur corresponds to one core-reaction ...
H, Kramer, J, Amesz
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Solubilization and properties of the hydrogenase of Chromatium
Biochimica et Biophysica Acta (BBA) - Enzymology, 1970Abstract Cell-free extracts of Chromatium were separated into a soluble and a particulate chromatophore fraction and the latter fraction contained most of the hydrogenase activity of the cells as well as the ferrodoxin-dependent H 2 NAD + reducing activity.
E, Feigenblum, A I, Krasna
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Malic enzyme of Chromatium vinosum
Archives of Microbiology, 1980Malic enzyme of the phototropic bacterium Chromatium vinosum strain D that lacks malate dehydrogenase was partially purified yielding a specific activity of 55 units/mg protein. The constitutive enzyme with a molecular weight of 110,000 and a pH optimum of 8.0 was absolutely dependent on the presence of a monovalent cation (NH4+, K+, Cs+, or Rb+) as ...
H G, Sahl, H G, Trüper
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The fine structure of Chromatium buderi
Archiv f�r Mikrobiologie, 1973The fine structure of the phototrophic sulfur bacterium Chromatium buderi was studied in ultrathin sections and freeze-etch preparations. In addition to an intracytoplasmic membrane system common to all species of the Chromatiaceae, C. buderi contained extended lamellar membrane structures possibly due to too high light intensities during growth.
C C, Remsen, H G, Trüper
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Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1991
Phosphorylation and dephosphorylation reactions were studied in situ by 31 P-NMR on chromatophores from purple sulfur bacteria ( Chromatium (C.) vinosum , and Chromatium tepidum ) with special emphasis on examination of adenylate kinase as well as of H + -ATPase and of their thermal natures.
Tsunenori Nozawa +3 more
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Phosphorylation and dephosphorylation reactions were studied in situ by 31 P-NMR on chromatophores from purple sulfur bacteria ( Chromatium (C.) vinosum , and Chromatium tepidum ) with special emphasis on examination of adenylate kinase as well as of H + -ATPase and of their thermal natures.
Tsunenori Nozawa +3 more
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Energy trapping in the purple sulfur bacteria Chromatium vinosum and Chromatium tepidum
Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1994Energy trapping in chromatophores of the purple sulfur bacteria Chromatium vinosum and Chromatium tepidum has been examined by means of picosecond transient absorption spectroscopy. In C. vinosum, time constants for excitation quenching in the core antenna by open and closed reaction centres were 50 and 230 ps, respectively. In C.
John T.M. Kennis +2 more
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Isolation and characterization of Chromatium vinosum membranes
Archives of Microbiology, 1974A fractionation of Chromatium vinosum into an outer layer (cell wall) and three intracellular membrane fractions by isopycnic sucrose density centrifugation of a total membrane fraction obtained by lysis of lysozyme-EDTA spheroplasts is decribed.
Ronald E. Hurlbert +2 more
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On the mechanism of glycolate synthesis by Chromatium and Chlorella
Archives of Biochemistry and Biophysics, 1978Abstract When cultures of the photosynthetic bacterium, Chromatium vinosum , capable of photosynthesizing glycolate at about 10 μmol/mg of bacteriochlorophyll/h were exposed to atmospheres enriched with 18 O 2 , one atom of oxygen-18 was incorporated into the car☐yl group of glycolate.
G H, Lorimer +3 more
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Spectrofluorometry of pyridine nucleotide reactions in Chromatium
Biochimica et Biophysica Acta, 1959Abstract The spectrum of the blue fluorescence increase caused by photosynthetic illumination of Chromatium has been found to be similar to the fluorescence spectrum of bound reduced pyridine nucleotude, which supports the hypothesis that the light-induced fluorescence increase in the blue region is caused by reduction of this coenzyme.
J M, OLSON +2 more
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