Transcriptional regulation and structure of the Bacillus subtilis sporulation locus spoIIIC - PubMed (original) (raw)

Transcriptional regulation and structure of the Bacillus subtilis sporulation locus spoIIIC

J Errington et al. J Bacteriol. 1988 Mar.

Abstract

The spoIIIC locus of Bacillus subtilis has been cloned from the lambda library of Ferrari et al. (E. Ferrari, D. J. HEnner, and J. A. Hoch, J. Bacteriol. 146:430-432, 1981) by using as an assay transformation of the mutant allele spoIIIC94 to the wild type. Regulation of the spoIIIC locus was studied by hybridization of cloned spoIIIC DNA to RNA pulse-labeled at various times during growth and sporulation. The relative rate of transcription of the spoIIIC locus was highest 3 h after the end of growth. The DNA sequence of the spoIIIC transcription unit indicated the coding capacity for a small protein (138 amino acids) having significant similarity with one domain of RNA polymerase sigma factors. Interruption of this coding sequence by an insertion mutation caused cells to become Spo-.

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