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. 1990 Mar;172(3):1470–1477. doi: 10.1128/jb.172.3.1470-1477.1990

Bacillopeptidase F of Bacillus subtilis: purification of the protein and cloning of the gene.

A Sloma 1, G A Rufo Jr 1, C F Rudolph 1, B J Sullivan 1, K A Theriault 1, J Pero 1
PMCID: PMC208622  PMID: 2106512

Abstract

We have purified a minor extracellular serine protease from Bacillus subtilis. Characterization of this enzyme indicated that it was most likely the previously reported enzyme bacillopeptidase F. The amino-terminal sequence of the purified protein was determined, and a "guess-mer" oligonucleotide hybridization probe was constructed on the basis of that sequence. This probe was used to identify and clone the structural gene (bpr) for bacillopeptidase F. The deduced amino acid sequence for the mature protein (496 amino acids) was preceded by a putative signal sequence of 30 residues and a putative propeptide region of 164 amino acids. The bpr gene mapped near pyrD on the chromosome and was not required for growth or sporulation.

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