Results 161 to 170 of about 12,477 (201)

On the mechanism of photosynthetic electron transfer in Rhodopseudomonas capsulata and Rhodopseudomonas sphaeroides

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1981
Abstract (1) Current models for the mechanism of cyclic electron transport in Rhodopseudomonas sphaeroides and Rhodopseudomonas capsulata have been investigated by observing the kinetics of electron transport in the presence of inhibitors, or in photosynthetically incompetent mutant strains.
J R, Bowyer, A R, Crofts
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Purification and properties of the adenylate kinases from Rhodopseudomonas palustris, Rhodopseudomonas sphaeroides and Rhodopseudomonas rubrum

Archives of Microbiology, 1983
The adenylate kinases (EC 2.7.4.3) from photosynthetically grown Rhodopseudomonas palustris, Rhodopseudomonas sphaeroides and Rhodospirillum rubrum were purified to homogeneity by the same procedure. The purified enzymes showed optimal rates of activity with MgCl2 at 25° C and pH 8.0.
Hartmut Neufang, Horst M�ller, Karl Knobloch   +2 more
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Adaptation of Rhodopseudomonas spheroids

Proceedings of the Royal Society of London. Series B. Biological Sciences, 1968
Abstract The composition of Rhodopseudomonas spheroides grown under oxygen or under air in the dark, or semi-anaerobically in the light was studied. The amounts of various constituents were expressed per cell. Anaerobically grown cells were 20 % lighter than cells grown under oxygen but contained approximately 50 % more protein and 85
A, Gorchein, A, Neuberger, G H, Tait
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Nitrogen assimilation in Rhodopseudomonas acidophila

Archives of Microbiology, 1978
Rhodopseudomonas acidophila strain 7050 assimilated ammonia via a constitutive glutamine synthetase/glutamate synthase enzyme system. Glutamine synthetase had a Km for NH+4 of 0.38 mM whilst the nicotinamide adenine dinucleotide linked glutamate synthase had a Km for glutamine of 0.55 mM. R.
R A, Herbert, E, Siefert, N, Pfennig
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Catabolism of glycine in Rhodopseudomonas spheroides

Biochimica et Biophysica Acta, 1962
Abstract Catabolism of glycine in Rhodopseudomonas spheroides grown anaerobically in the light was studied under various conditions. Under dark-aerobic conditions, formation of 14CO2 from [1-14C] and [2-14C]glycine was inhibited strongly by 5·10−5M sodium fluoroacetate.
S, TSUIKI, G, KIKUCHI
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Membrane lipids of Rhodopseudomonas viridis

Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1997
In search of the precyanobacterial origin of the typical thylakoid lipids found in cyanobacteria and chloroplasts, we analyzed the polar lipids of the anaerobic phototrophic bacterium Rhodopseudomonas viridis. Glycolipids (monogalactosyl-, digalactosyl- and glucuronosyl diacylglycerol), phospholipids (phosphatidyl choline, -ethanolamine, -glycerol and ...
M, Linscheid, B W, Diehl, M, Overmöhle, I, Riedl, E, Heinz   +4 more
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Porphobilinogenase from Rhodopseudomonas palustris

Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1989
1. Porphobilinogenase (PBGase) from Rp. palustris has been isolated and some properties of a partially purified fraction were studied. 2. PBGase has an optimum pH of 7.4 when activity was expressed in terms of porphyrins formed and two pH maxima at 7.4 and 8.5 when activity was based on the amount of PBG consumed. 3.
A A, Juknat, M L, Kotler, G E, Koopmann, A M, Batlle   +3 more
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[Isolation and identification of Rhodopseudomonas viridis and Rhodopseudomonas sulfoviridis].

Wei sheng wu xue bao = Acta microbiologica Sinica, 1995
Under selective culture conditions, two pure cultures (strain G and strain SG) of the purple nonsulfur photosynthetic bacteria containing bacteriochlorophyll b were isolated from pulp effluent and sludge of sewage treatment plant by means of agar shake dilution.
S, Yang, Z, Zhang, C, Zhao
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THE ESTABLISHMENT OF MITOCHONDRIA: PARACOCCUS AND RHODOPSEUDOMONAS

Annals of the New York Academy of Sciences, 1981
Many aerobic bacteria (both facultative and obligate) possess a number of those biochemical features of mitochondria which are concerned with energy metabolism. However, only restricted number, notably Paracoccus denitrificans and Rhodopseudomonas spheroides, have the majority of these features.
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Regulatory properties of the ADPglucose pyrophosphorylase from Rhodopseudomonas sphaeroides and from Rhodopseudomonas gelatinosa

Archives of Microbiology, 1980
The ADPglucose pyrophosphorylases from Rhodopseudomonas sphaeroides and Rhodopseudomonas gelatinosa are activated by fructose-6-phosphate, pyruvate and fructose-1,6 biophosphate-P2. The effects of the activators are to increase significantly the Vmax of ADPglucose synthesis and to lower the S0.5 values (concentration of substrates giving 50% maximal ...
J, Preiss, E, Greenberg, T F, Parsons, J, Downey   +3 more
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