Results 251 to 260 of about 1,204,088 (297)

Reaction Centres of Purple Bacteria

Sub-Cellular Biochemistry, 2000
The bacterial reaction centre is undoubtedly one of the most heavily studied electron transfer proteins and, as this article has tried to describe, it has made some unique contributions to our understanding of biological electron transfer and coupled protonation reactions, and has provided fascinating information in areas that concern basic properties ...
Michael R Jones, Marion E van Brederode
exaly   +3 more sources

The phylogeny of purple bacteria: The alpha subdivision

Systematic and Applied Microbiology, 1984
The technique of oligonucleotide cataloging shows the purple photosynthetic eubacteria to comprise three major subdivisions, temporarily called alpha, beta, and gamma--previously designated groups I-III by Gibson et al. (1979). Each subdivision contains a number of non-photosynthetic genera in addition to the photosynthetic ones.
C R, Woese, E, Stackebrandt, W G, Weisburg, B J, Paster, M T, Madigan, V J, Fowler, C M, Hahn, P, Blanz, R, Gupta, K H, Nealson, G E, Fox   +10 more
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The size of the photosynthetic unit in purple bacteria

Photosynthesis Research, 1995
Pigment analysis was performed by means of normal phase HPLC on a number of bacteriochlorophyll a and b containing species of purple bacteria that contain a core antenna only. At least 99% of the bacteriochlorophyll in Rhodobacter sphaeroides R26, Rhodopseudomonas viridis and Thiocapsa pfennigii was esterified with phytol (BChl a p and BChl b p ...
C, Francke, J, Amesz
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Sulfide utilization by purple nonsulfur bacteria

Archiv f�r Mikrobiologie, 1972
The purple nonsulfur bacteria Rhodospirillum rubrum SMG 107, Rhodopseudomonas capsulata SMG 155, Rps. sphaeroides SMG 158 and Rps. palustris SMG 124 were tested for a possible utilization of sulfide. The first three strains were found to oxidize sulfide to extracellular elemental sulfur only, whereas Rps.
T A, Hansen, H, van Gemerden
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Anoxygenic Phototrophic Purple Bacteria

2005
Akira Hiraishi, Johannes F. Imhoff
exaly   +4 more sources

Purple Bacteria: Electron Acceptors and Donors

2013
ABSTRACT: Purple bacteria form a heterogeneous group of microorganisms capable of growing under anoxic conditions by anoxygenic photosynthesis. They can be divided in purple non-sulfur bacteria, which are able to grow both phototrophically and in darkness, and purple sulfur bacteria, all of them capable to grow in the light but only few of them in the ...
ADESSI, ALESSANDRA, DE PHILIPPIS, ROBERTO   +1 more
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Photoreceptor Proteins from Purple Bacteria

2009
Purple bacteria contain representatives of four of the six main families of photoreceptor proteins: phytochromes, BLUF domain containing proteins, xanthopsins (i.e., photoactive yellow proteins), and phototropins (containing one or more light, oxygen, or voltage (LOV) domains).
Hendriks, J., van der Horst, M.A., Chua, T.K., Ávila Pérez, M., van Wilderen, L.J., Alexandre, M.T.A., Groot, M.-L., Kennis, J.T.M., Hellingwerf, K.J.   +8 more
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Physiological ecology of purple and green bacteria

Annales de l'Institut Pasteur / Microbiologie, 1983
Resume L'abondance des bacteries phototrophes dans la nature depend beaucoup du groupe etudie: les Chromatiacees et les Chlorobiacees se developpent souvent en abondance, alors que les Rhodospirillacees sont ubiquistes mais en petit nombre; les Chloroflexacees peuvent former des tapis sous une couche de cyanobacteries, mais leur presence dans des ...
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Photosynthesis in the Purple Bacteria

2017
Anoxygenic chlorophototrophic purple bacteria have long provided a useful model system for functional and structural studies of the light reactions of photosynthesis, since they possess only a single Type II photochemical reaction center (RC), while in the more complex oxygenic phototrophs, two types of RCs, designated as photosystems I and II, are ...
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Biosynthesis of Bacteriochlorophylls in Purple Bacteria

2009
The purple bacteria make bacteriochlorophylls for the photosynthetic mode of growth. These pigments are made from the simple precursors glycine and succinyl CoA and the initial steps in the pathway of bacteriochlorophyll biosynthesis are shared with the vitamin B12 and heme biosynthetic pathways.
Robert D. Willows, Alison M. Kriegel
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