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The Two-Component Response Regulator RcsB Regulates Type 1 Piliation in Escherichia coli

Department of Microbiology, University of Wisconsin—La Crosse, La Crosse, Wisconsin 54601,¹ Department of Life Sciences, Prefectural University of Hiroshima, 562 Nanatsuka, Shobara, Hiroshima 727-0023, Japan,² CREST Soft Nano-Machine Project, Innovation Plaza Hiroshima, 3-10-23 Kagamiyama, Higashi-Hiroshima 739-0046, Japan,³ Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, Illinois 60153⁴

Received 3 May 2007/ Accepted 12 July 2007

The ability of Escherichia coli cells to produce type 1 pili depends upon the orientation of the fimA promoter. The orientation depends upon the ratios of the FimB and FimE recombinases. Here, we report that the two-component response regulator RcsB influences the piliation state by controlling fimB and fimE transcription.

Published ahead of print on 20 July 2007.

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