Results 131 to 140 of about 4,039 (174)

Oxidative metabolism of propionate in Rhodospirillum rubrum

Archiv f�r Mikrobiologie, 1957
Studies were conducted of the oxidative metabolism of propionate in Rhodospirillum rubrum, using C14-labeled compounds. The results, taken in conjunction with a carbon dioxide requirement described previously (Clayton et al., 1957), reveal that the first step is a carboxylation of propionic acid, yielding succinic acid. This result is confirmed through
R K, CLAYTON, F H, DETTMER, A E, ROBERTSON   +2 more
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Characterization of a blue mutant of Rhodospirillum rubrum

Biochimica et Biophysica Acta (BBA) - General Subjects, 1972
Abstract A carotenoidless, blue mutant of Rhodospirillum rubrum strain S1 was isolated and characterized with respect to its nutritional requirements, growth kinetics and absorption spectra. The mutant contained bacteriochlorophyll a and the carotenoid phytoene, required reduced sulfur compounds for growth under photosynthetic conditions, and ...
P J, Kuhn, S C, Holt
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Characterization of the pet operon of Rhodospirillum rubrum

Photosynthesis Research, 1992
The three genes of the pet operon, coding, respectively, for the Rieske iron-sulfur protein, cytochrome b and cytochrome c 1 components of the cytochrome bc 1 complex in the photosynthetic bacterium Rhodospirillum rubrum have been sequenced. The amino acid sequences deduced for these three peptides from the nucleotide sequences of the genes have been ...
S, Chankor, C, Moomau, S, Güner, J, Hsu, M K, Tokito, F, Daldal, D B, Knaff, J G, Harman   +7 more
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Purine and Pyrimidine Metabolism in Rhodospirillum rubrum

Nature, 1961
WE have investigated the ability of the photosynthetic bacterium, Rhodospirillum rubrum, to deaminate aminopurines and aminopyrimidines.
T W, GOODWIN, P N, PASSORN
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Photosynthetic metabolism of propionate in Rhodospirillum rubrum

Archiv f�r Mikrobiologie, 1957
As in the case of oxidative metabolism, the photosynthetic metabolism of propionate in Rhodospirillum rubrum begins with a carboxylation yielding succinate. This conclusion is based on experiments in which radioactive propionate (1-C14 and 2-C14) is administered in the presence of “carrier” lactate, pyruvate, succinate, and acrylate, and on studies of ...
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A carotenoprotein from chromatophores of Rhodospirillum rubrum

Biochemical and Biophysical Research Communications, 1973
Abstract A carotenoprotein has been obtained by SDS-solubilization of Rhodospirillum rubrum chromatophores. It was then purified by (NH4)2SO4 precipitation and Sephadex G-200 filtration. SDS-polyacrylamide gel electrophoresis revealed a single protein with a molecular weight of about 12,000.
U, Schwenker, G, Gingras
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The isolation and characterization of Rhodospirillum rubrum flavodoxin

Biochemical and Biophysical Research Communications, 1971
Abstract The isolation and characterization of a flavodoxin from Rhodospirillum rubrum is reported. Chemical and physical measurements indicate a molecular weight of 23,000 g-mole−1, one FMN # per mole of protein, and an amino acid composition similar, in many respects, to those of flavodoxins isolated from other organisms. R.
M A, Cusanovich, D E, Edmondson
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Untersuchungen zur Photophosphorylierung bei Rhodospirillum molischianum und Rhodospirillum rubrum

Archiv f�r Mikrobiologie, 1964
Die Thylakoide aus Rhodospirillum rubrum und Rhodospirillum molischianum werden nach Homogenisation der Zellen mit Ultraschall durch fraktionierte Zentrifugation isoliert. An diese Membranstrukturen ist das System der Photophosphorylierung gebunden. Die Aktivitat dieses Systems in Abhangigkeit vom Redoxpotential des Mediums wird untersucht.
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Bound nucleotides and phosphorylation in Rhodospirillum rubrum

Biochemical and Biophysical Research Communications, 1979
Chromatophores from Rhodospirillum rubrum contain 12 × 10−3 mol ATP and 8.3 × 10−3 mol ADP per mol chlorophyll, tightly bound to the coupling ATPase. Under energised conditions, these exchange slowly with added nucleotide. Using single turnover light flashes, it is demonstrated that the release of bound ATP is too slow to be on the direct pathway of ...
D A, Harris, M, Baltscheffsky
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Light-activated hydrogenase in Rhodospirillum rubrum

Biochimica et Biophysica Acta (BBA) - Specialized Section on Biophysical Subjects, 1964
Abstract Reduction of 37.5 mM potassium ferricyanide by hydrogen with washed suspensions of Rhodospirillum rubrum cells in phosphate buffer requires light when calcium is added. Washed cells have little hydrogenase activity in Tris buffer, but they are activated by divalent metal-complexing anions, cadmium, zinc, and detergents. Light activation of
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