THE INHIBITION OF BACTERIOCHLOROPHYLL BIOSYNTHESIS IN RHODOPSEUDOMONAS SPHEROIDES BY 8-HYDROXYQUINOLINE
نویسندگان
چکیده
منابع مشابه
The Inhibition of Bacteriochlorophyll Biosynthesis in Rhodopseudomonas Spheroides by 8-hydroxyquinoline.
Granick (1948, 1950, 1961) has isolated different mutants of Chlorella which are unable to synthesize chorophyll and which accumulate magnesium protoporphyrin, magnesium vinyl phaeoporphyrin a5 and a monoester of magnesium protoporphyrin, presumed to be the monomethyl ester. Granick (1961) has proposed that these compounds are intermediates in chlorophyll biosynthesis, and it has been suggested...
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...
متن کاملThe synthesis of porphyrins and bacteriochlorophyll by cell suspensions of Rhodopseudomonas spheroides.
Free porphyrins are formed by growing cultures of some bacteria and yeasts under conditions in which formation of cytochromes is limited. With Corynebacterium diphtheriae, production of both porphyrin and toxin is dependent upon the concentration of iron salts in the medium; increasing this beyond a critical point decreases both porphyrin and toxin production (Pappenheimer, 1947). Cells grown w...
متن کاملThe accumulation of bacteriochlorophyll precursors by mutant and wild-type strains of Rhodopseudomonas spheroides.
1. Two mutant strains of Rhodopseudomonas spheroides, which are blocked in the synthesis of bacteriochlorophyll, accumulate pigments. These have been tentatively identified as magnesium 2,4-divinylphaeoporphyrin a(5) monomethyl ester and the magnesium derivative of 2-devinyl-2-hydroxyethyl-phaeophorbid a, formed by mutant 2/73 and 2/21 respectively. 2. Maximum extracellular production of these ...
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: Biochemical Journal
سال: 1963
ISSN: 0006-2936
DOI: 10.1042/bj0880335