DNA repair systems in the phototrophic bacterium Rhodobacter capsulatus

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UV irradiation and mitomycin C exposure trigger a protease-activity-dependent inhibition of cell division in Rhodobacter capsulatus, which begins about 2 h after the treatment is applied. UV irradiation also induces a dose-dependent mutagenesis with a maximal rate between 5 and 10 J m-2, with increased synthesis of a protein of M(r) approximately 30,000 between 2 and 3 h after UV irradiation. In addition, R. capsulatus has an efficient photoreactivation system that reverses the lethal effects of UV irradiation in the presence of intense visible light.
Original languageEnglish
Pages (from-to)961-966
Number of pages6
JournalJournal of General Microbiology
Issue number4
Publication statusPublished - 1 Apr 1987


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