ENDOGENOUS PHOTOSENSITIZATION IN A CAROTENOIDLESS MUTANT OF RHODOPSEUDOMONAS SPHEROIDES
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چکیده
منابع مشابه
Endogenous Photosensitization in a Carotenoidless Mutant of Rhodopseudomonas Spheroides
Endogenous photosensitization in a carotenoidless mutant of Rhodopseudomonas spheroides has been studied. When this mutant is exposed to visible light and oxygen there is a short lag period followed by exponential killing of the cells. The killing process obeys the Bunsen-Roscoe law of reciprocity and is temperature-independent. The chlorophyll content of the cells does not affect the rate of k...
متن کاملElectron microscopy of chromatophores of Rhodopseudomonas spheroides.
Gibson, K. D. (St. Mary's Hospital Medical School, London, England). Electron microscopy of Rhodopseudomonas spheroides. J. Bacteriol. 90:1059-1072. 1965.-Fixed and stained chromatophores and whole cells of anaerobically grown Rhodopseudomonas spheroides were examined in thin sections in the electron microscope. Both purified chromatophores and intracellular membrane-bound vesicles had exactly ...
متن کاملIntracellular location of enzymes in rhodopseudomonas spheroides.
By differential centrifugation of extracts of pigmented Rhodopseudomonas spheroides a number of constituents, phospholipid and lipid ornithine, and enzymes, zinc protoporphyrin chelatase, succinic dehydrogenase and S-adenosylmethionine-magnesium protoporphyrin methyltransferase, have been found to be associated both with chromatophores and with non-pigmented particulate material. These componen...
متن کاملCofactor-dependent Aldose Dehydrogenase of Rhodopseudomonas Spheroides.
Niederpruem, Donald J. (University of California, Berkeley), and Michael Doudoroff. Cofactor-dependent aldose dehydrogenase of Rhodopseudomonas spheroides. J. Bacteriol. 89:697-705. 1965.-Particulate enzyme preparations of cell extracts of Rhodopseudomonas spheroides possess constitutive dehydrogenase and oxidase activities for aldose sugars, reduced nicotinamide adenine dinucleotide (NADH(2)),...
متن کاملBacteriochlorophyll Synthesis and the Ultrastructure of Wild Type and Mutant Strains of Rhodopseudomonas spheroides.
The ultrastructure of sectioned cells of mutant and wild type Rhodopseudomonas spheroides has been examined by electron microscopy. The characteristic vesicles associated with the presence of bacteriochlorophyll were found in wild type cells grown with low aeration. These were also found in mutant TA-R which forms bacteriochlorophyll under high aeration. None of the mutants with blocks in bacte...
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ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 1958
ISSN: 1540-7748,0022-1295
DOI: 10.1085/jgp.41.6.1099