Studies in carotenogenesis. 14. Carotenoid synthesis in the photosynthetic bacterium Rhodopseudomonas spheroides
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منابع مشابه
Fluorescence studies on photosynthetic pigment development in Rhodopseudomonas spheroides.
When bleached, aerobically grown cells of Rhodopseudornonas spheroides are transferred to semi-aerobic conditions to induce bacteriochlorophyll synthesis, a new fluorescence band, with a maximum at 790 nm, is observed in addition to the 885 nm emission maximum normally seen in pigmented cells. The 790 nm fluorescence may be due to bacteriochlorophyll which has not been bound into the chromatoph...
متن کاملProperties of a cytochrome c-enriched light particulate fraction isolated from the photosynthetic bacterium Rhodopseudomonas spheroides.
Differential centrifugation of suspensions of French-press-disrupted Rhodopseudomonas spheroides yielded a light particulate fraction that was different in many properties from the bulk membrane fraction. It was enriched in cytochrome c and had a low cytochrome b content. When prepared from photosynthetically grown cells this fraction had a very low specific bacteriochlorophyll content. The cyt...
متن کاملPigment Carrying Structures of the Photosynthetic Non-sulphur Purple Bacterium Rhodopseudomonas Spheroides.
As observed under the electron microscope (6), aqueous extracts of photosynthetic bacteria contain grana-like structures; most probably, these organelles are built up of lamellae. Pardee, Schachman and Stanier (5) showed that the colored sediment obtained by centrifugation of aqueous extracts of Rhodospirillum rubrum consisted of the above-mentioned granalike structures. Niklowitz and Drews (4)...
متن کاملVitamin B(12) in photosynthetic bacteria and methionine synthesis by Rhodopseudomonas spheroides.
1. Assay of some photosynthetic bacteria for vitamin B(12) showed them to be relatively rich in this factor. Rhodopseudomonas spheroides, grown photosynthetically in Co(2+)-supplemented medium, contained about 100mug./g. dry wt. 2. Extracts of wild-type Rps. spheroides methylated homocysteine by a mechanism similar to the cobalamin-dependent pathway present in Escherichia coli. However, no mech...
متن کاملCoupling between bacteriochlorophyll and membrane protein synthesis in Rhodopseudomonas spheroides.
Bacteriochlorophyll-containing membranes from Rhodopseudomonas spheroides contain proteins with estimated molecular weights of 26,000, 22,000, 19,000, and 10,000-6,000 (proteins 9, 10, 11, and 15) when analyzed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. Proteins 9, 10, and 11 may be associated with the reaction center form of bacteriochlorophyll and protein 15, with the light...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1955
ISSN: 0306-3283
DOI: 10.1042/bj0590491