Isolation and characterization of mutated FhlA proteins which activate transcription of the hyc operon (formate hydrogenlyase) of Escherichia coli in the absence of molybdate(1).

Abstract excerpt

Escherichia coli growing under anaerobic conditions produces H(2) and CO(2) by the enzymatic cleavage of formate catalyzed by formate hydrogenlyase (FHL) consisting of a molybdoenzyme formate dehydrogenase H (fdhF), hydrogenase 3 (hyc), and intermediate electron carriers (hyc). Transcription of both the fdhF and hyc operons requires the activator, FhlA protein, as well as formate and molybdate. Several fhlA...

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