Coupled photoreduction of ubiquinone and photooxidation of ferrocytochrome C catalyzed by chromatophores of Rhodospirillum rubrum.
نویسنده
چکیده
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منابع مشابه
Photo-oxidations catalyzed by chromatophores of Rhodospirillum rubrum under anaerobic conditions.
In the previous paper of this series (l), some characteristics of the photoreducing system of Rhodospirillum rubrum chromatophores were presented. In one of the experiments described, it appeared that methylene blue was being oxidized in the illuminated reaction mixture. Since such a photooxidation would be an expression of the photooxidizing system of the chromatophore, this reaction was inves...
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A stimulation by phenazine methosulfate (PMS) of photophosphorylation with extracts of Rhodospirillum rubrum was first reported by Geller and Gregory,' who at the same time presented spectroscopic evidence that PMS was oxidized during the reaction. Jagendorf and Avron2 subsequently reported that PMS serves as a cofactor for cyclic photophosphorylation in chloroplasts, and considerable interest ...
متن کاملCoupled photooxidation and photoreduction reactions and associated phosphorylation by chromatophores of Rhodosprillum rubrum.
The light-induced flow of electrons in the chlorophyll-containing particles of photosynthetic bacteria can result in a phosphorylation of adenosine diphosphate to form adenosine triphosphate (l-4), a photooxidation of added mammalian cytochrome c and oxidation-reduction dyes (5), or a photoreduction of diphosphopyridine nucleotide (6). The photoreduction of diphosphopyridine nucleotide by chrom...
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Chromatophores isolated from photosynthetic bacteria contain a disulfide-bonded repeating antigenic substructure that is serologically specific and present on the cell particles only during photosynthetic growth (l-3). This finding suggests that the structural antigen may also be a functional part of the photosynthetic electron transport system. This suggestion has been explored and supported b...
متن کاملRoles of ubiquinone-10 and rhodoquinone in photosynthetic formation of adenosine triphosphate by chromatophores from Rhodospirillum rubrum.
1. The roles of ubiquinone-IO and of rhodoquinone in photosynthetic ATP formation were studied with chromatophores from a blue-green mutant (G-9) of Rhodospirillum rubrum. 2. Chromatophores contained ubiquinone-10 and rhodoquinone in amounts equal approximately to 50% and lo%, respectively, on a molar basis, of that of bacteriochlorophyll. Other quinones were not present in appreciable amounts....
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ورودعنوان ژورنال:
- Proceedings of the National Academy of Sciences of the United States of America
دوره 50 شماره
صفحات -
تاریخ انتشار 1963