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J. Bacteriol., Mar 1995, 1634-1637, Vol 177, No. 6
Copyright © 1995, American Society for Microbiology

Genetic evidence that PpsR from Rhodobacter sphaeroides 2.4.1 functions as a repressor of puc and bchF expression

M Gomelsky and S Kaplan
Department of Microbiology and Molecular Genetics, University of Texas Health Science Center Medical School, Houston 77030.

The ppsR gene (R. J. Penfold and J. M. Pemberton, J. Bacteriol. 176:2869-2876, 1994) from Rhodobacter sphaeroides 2.4.1 functions as a transcriptional repressor of puc and bchF expression. The carboxy terminus of PpsR, containing the putative DNA-binding domain, by itself possesses repressor activity. Intact palindromes having the motif TGT- N12-ACA are required for PpsR activity.

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