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Article

Oxygen regulation of the Escherichia coli cytochrome d oxidase (cydAB) operon: roles of multiple promoters and the Fnr-1 and Fnr-2 binding sites.

Molecular microbiology - 1 Sept 2000

Govantes F, Albrecht J A, Gunsalus R P

Abstract excerpt

The Escherichia coli cydAB operon encodes the high-affinity terminal oxidase of the oxygen respiratory chain, cytochrome d oxidase. The sensor-regulator pair, ArcB-ArcA, is responsible for the microaerobic activation of the cydAB operon, whereas the anaerobic regulator Fnr represses its expression in the absence of oxygen. Fnr binds in vitro at two sites within the cydAB promoter element. To discern whether these...

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PMID: 10998176
DOI: 10.1046/j.1365-2958.2000.02100.x

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

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