RegA Control of Bacteriochlorophyll and Carotenoid Synthesis in Rhodobacter capsulatus
نویسندگان
چکیده
منابع مشابه
RegA control of bacteriochlorophyll and carotenoid synthesis in Rhodobacter capsulatus.
We provide in vivo genetic and in vitro biochemical evidence that RegA directly regulates bacteriochlorophyll and carotenoid biosynthesis in Rhodobacter capsulatus. beta-Galactosidase expression assays with a RegA-disrupted strain containing reporter plasmids for Mg-protoporphyrin IX monomethyl ester oxidative cyclase (bchE), Mg-protoporphyrin IX chelatase (bchD), and phytoene dehydrogenase (cr...
متن کاملControl of bacteriochlorophyll accumulation by light in Rhodobacter capsulatus.
The accumulation of bacteriochlorophyll in Rhodobacter capsulatus grown either anaerobically or under low aeration is repressed by bright light. It has been proposed that an intact photosynthetic membrane system is required for light-mediated regulation. This was tested by measuring bacteriochlorophyll accumulation in various mutant strains grown under 3% oxygen. Mutants lacking either the reac...
متن کاملRegA of R. capsulatus 291 In Vivo and In Vitro Analysis of RegA Response Regulator Mutants of Rhodobacter capsulatus
In the facultative photosynthetic bacterium Rhodobacter capsulatus, the transcription of genes encoding pigment binding proteins is tightly regulated in response to the oxygen partial pressure by the RegB/ RegA two component system. After a shift from high to low oxygen tension, the response regulator RegA enhances transcription of the puf and puc operon coding for the reaction center, light-ha...
متن کاملRegA Protein from Rhodobacter capsulatus 235 DNA Binding of Wild Type RegA Protein and Its Differential Effect on the Expresion of Pigment Binding Proteins in Rhodobacter capsulatus
The transcription of genes encoding pigment binding proteins in the facultative photosynthetic bacterium Rhodobacter capsulatus is regulated in response to oxygen partial pressure. Previous results identified RegA and RegB as members of a two component system involved in oxygen dependent synthesis of the photosynthetic apparatus. Here we demonstrate that RegA differentially controls the transcr...
متن کاملIn vivo and in vitro analysis of RegA response regulator mutants of Rhodobacter capsulatus.
In the facultative photosynthetic bacterium Rhodobacter capsulatus, the transcription of genes encoding pigment binding proteins is tightly regulated in response to the oxygen partial pressure by the RegB/ RegA two component system. After a shift from high to low oxygen tension, the response regulator RegA enhances transcription of the puf and puc operon coding for the reaction center, light-ha...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 2007
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.00853-07