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Rhodospirillum rubrum strain F24.1 is a spontaneous revertant of nonphototrophic mutant F24 derived from wild-type strain S1. Strain F24 shows no detectable photochemical activity and contains, at most, traces of the photoreaction center polypeptides. Strain F24.1 has a phototrophic growth rate close to that of the wild-type strain (Picorel, R., del Valle-Tascón, S. and Ramírez, J.M. (1977) Arch. Biophys. Biochem. 181, 665-670) but shows little photochemical activity. Light-induced absorbance changes in the near-infrared, photoinduced EPR signals and ferricyanide-elicited absorbance changes indicate that strain F24.1 has a photoreaction center content of 7-8% as compared to strain S1. Polyacrylamide gel electrophoresis of isolated F24.1 chromatophores shows the photoreaction center polypeptides to be present in amounts compatible with this value. Photoreaction center was prepared from strain F24.1 and showed no detectable difference with that of strain S1. It is concluded that strain F24.1 photosynthesis is due entirely to its residual 7-8% of typical photoreaction center.
R Picorel, and
F F Del Campo, and
J M Ramirez, and
G Gingras
October 1979,
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R Picorel, and
F F Del Campo, and
J M Ramirez, and
G Gingras
November 1975,
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R Picorel, and
F F Del Campo, and
J M Ramirez, and
G Gingras
October 1979,
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R Picorel, and
F F Del Campo, and
J M Ramirez, and
G Gingras
May 1977,
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R Picorel, and
F F Del Campo, and
J M Ramirez, and
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R Picorel, and
F F Del Campo, and
J M Ramirez, and
G Gingras
June 1988,
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R Picorel, and
F F Del Campo, and
J M Ramirez, and
G Gingras
September 1976,
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R Picorel, and
F F Del Campo, and
J M Ramirez, and
G Gingras
January 1972,
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R Picorel, and
F F Del Campo, and
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G Gingras
August 1981,
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R Picorel, and
F F Del Campo, and
J M Ramirez, and
G Gingras
July 2011,
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