Affiliation:
1. Commonwealth Scientific and Industrial Research Organization, Division of Animal Health, Parkville, Victoria, Australia.
Abstract
Genes encoding the basic protease of Dichelobacter nodosus (bprV) and the subtilisin of Bacillus subtilis (aprE) were cloned and expressed in Corynebacterium glutamicum. In each case, enzymatically active protein was detected in the supernatants of liquid cultures. While the secretion of subtilisin was directed by its own signal peptide, the natural signal peptide of the bprV basic protease did not facilitate secretion. A hybrid aprE-bprV gene in which the promoter and signal peptide coding sequences of subtilisin replaced those of bprV could be expressed, and basic protease was secreted by C. glutamicum. Expression of these proteases in C. glutamicum provides an opportunity to compare protein secretion from this gram-positive host with that from other gram-positive and gram-negative bacteria.
Publisher
American Society for Microbiology
Subject
Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology
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