Genetic Recombination in Rhodopseudomonas capsulata
نویسندگان
چکیده
منابع مشابه
Genetic recombination in Rhodopseudomonas capsulata.
A system for genetic exchange in Rhodopseudomonas capsulata has been discovered. Each genetic marker thus far examined can be transferred, and many strains of Rps. capsulata can participate in genetic exchange. The mechanism of gene transfer seems unlike that of any previously described bacterial system, since genes can be transferred by cell-free filtrates, but the vector is resistant to deoxy...
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Regulation o f nitrogenase activity in Rhodopseudomonas capsulata AD 2 differs in several respects from other Rhodospirillaceae: 1) Nitrogenase activity in this strain grown under severe N-starvation was fully derepressed, but in contrast to other Rhodospirillaceae, it was inhibited by am m onia in vivo. 2) Nitrogenase in extracts o f glutamate grown cells was fully active and not further stimu...
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The isolation and study of glycerol-utilizing mutants of Rhodopseudomonas capsulata indicated that the wild-type organism has genes capable of coding for the catabolism of glycerol but is unable to express them. Furthermore, the genetic lesion in the original glycerol-utilizing mutant, L1, occurred very close to these genes.
متن کاملAnaerobic regulation of nitrogen-fixation genes in Rhodopseudomonas capsulata.
A Rhodopseudomonas capsulata nifH::lacZ gene fusion was used to isolate constitutive mutants of R. capsulata, unable to repress nif gene transcription anaerobically with every fixed-nitrogen source tested. When these nifc strains were grown aerobically, nif gene transcription was repressed. These results indicate that the regulation of nif gene transcription by fixed nitrogen is different from ...
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Five structural genes coding for the reaction center (RC) L, M, and H subunits and the two light-harvesting (LH) I polypeptides, B870alpha and B870beta, have been mapped on two restriction fragments from the R-prime plasmid pRPS404. It has been recently shown that enhanced near-infrared fluorescence mutants of Rhodopseudomonas capsulata typically lack RC or LH I polypeptides and that these lesi...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1974
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.71.3.971