Open AccessCatabolic repression of hydrogenase synthesis in Ectothiorhodospira shaposhnikovii
Author(s) -
Tsygankov A.A.,
Vasilieva L.G.
Publication year - 1990
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1990.tb13857.x
Subject(s) - hydrogenase , nitrogenase , chemostat , catabolism , biochemistry , psychological repression , rhodospirillales , bacteria , biology , intracellular , rhodospirillaceae , chemistry , enzyme , nitrogen fixation , gene expression , genetics , gene
The hydrogenase activity of purple sulfur bacterium Ectothiorhodospira shaposhnikovii was minimal when grown in acetate excess. Molecular hydrogen evolved to the nitrogenase activity of cells cultivated in chemostat under ammonium limitation did not increase the hydrogenase activity. Under acetate limitation, the flow rate decline increased the hydrogenase activity of cells and simultaneously the intracellular content of cyclic adenosine‐5′‐monophospate. Therefore, the hydrogenase synthesis by E. shaposhnikovii is regulated by catabolic repression.