Results 111 to 120 of about 3,227 (159)
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Photosynthesis and respiration in Rhodospirillum rubrum
Archives of Microbiology, 1955Roderick K Clayton +2 more
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Chromatophores of Rhodospirillum rubrum
Nature, 1952THE pigments of pbiotosynthetic bacteria are not localized in chloroplasts, and appear upon microscopic examination to be evenly distributed throughout the cell. It has long been known that the absorption maxima of the bacteriochlorophyll and carotenoid pigments are markedly shifted following extraction with organic solvents—a fact first interpreted by
A B, PARDEE +2 more
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Photoproduction of Molecular Hydrogen by Rhodospirillum rubrum
Science, 1949Martin D Kamen, Howard GEST, M D Kamen
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Transamination in Rhodospirillum rubrum
Archives of Biochemistry and Biophysics, 1957Abstract Whole cell and cell extracts of Rhodospirillum rubrum grown in the dark or light contain transaminases which catalyze the formation of glutamate from α-ketoglutarate and the following amino acids: phenylalanine, aspartate, tyrosine, ornithine, valine, leucine, isoleucine, tryptophan, histidine, and alanine.
D H, HUG, C H, WERKMAN
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Oxidative metabolism of propionate in Rhodospirillum rubrum
Archiv f�r Mikrobiologie, 1957Studies 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 +2 more
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Characterization of a blue mutant of Rhodospirillum rubrum
Biochimica et Biophysica Acta (BBA) - General Subjects, 1972Abstract 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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Purine and Pyrimidine Metabolism in Rhodospirillum rubrum
Nature, 1961WE 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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A carotenoprotein from chromatophores of Rhodospirillum rubrum
Biochemical and Biophysical Research Communications, 1973Abstract 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, 1971Abstract 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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Bound nucleotides and phosphorylation in Rhodospirillum rubrum
Biochemical and Biophysical Research Communications, 1979Chromatophores 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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