Anaerobic Regulation of Citrate Fermentation by CitAB in Escherichia coli

Kaneyoshi YAMAMOTO; Fumika MATSUMOTO; Taku OSHIMA; Nobuyuki FUJITA; Naotake OGASAWARA; Akira ISHIHAMA

doi:10.1271/bbb.80301

Biochemistry & Molecular Biology Notes

Anaerobic Regulation of Citrate Fermentation by CitAB in Escherichia coli

Kaneyoshi YAMAMOTO, Fumika MATSUMOTO, Taku OSHIMA, Nobuyuki FUJITA, Naotake OGASAWARA, Akira ISHIHAMA

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Keywords: citrate fermentation, anaerobic regulation, two-component signal transduction, CitA/CitB, Escherichia coli

JOURNAL FREE ACCESS

2008 Volume 72 Issue 11 Pages 3011-3014

DOI https://doi.org/10.1271/bbb.80301

View "Advance Publication" version (November 7, 2008).

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Abstract

In Escherichia coli, CitB, a cognate response regulator of CitA, specifically bound to the promoter regions for mdh, citA, citC, and exuT. Transcription of these genes was induced by citrate under anaerobic conditions in a CitAB-dependent manner. Taking this together, we conclude that CitAB is the master regulatory system that activates the set of genes involved in citrate fermentation in E. coli.

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