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J. Bacteriol. doi:10.1128/JB.01265-07
Copyright (c) 2007, American Society for Microbiology and/or the Listed Authors/Institutions. All Rights Reserved.

Expression of the ^F-directed csfB Locus Prevents Premature Appearance of ^G Activity during Sporulation of Bacillus subtilis

Department of Microbiology and Immunology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140

^* To whom correspondence should be addressed. Email: piggotp{at}temple.edu.

	Abstract

During sporulation, ^G becomes active in the prespore upon completion of engulfment. We show that inactivation of the ^F-directed csfB locus resulted in premature activation of ^G. CsfB exerted a distinct but overlapping control with LonA to prevent inappropriate ^G activation. Artificial induction of csfB severely compromised spore formation.