title: A Bacillus subtilis secretion vector system derived from the B. subtilis alpha-amylase promoter and signal sequence region, and secretion of Escherichia coli beta-lactamase by the vector system.
abstract: A secretion vector system in Bacillus subtilis was constructed from the alpha-amylase promoter and signal sequence coding region of an alpha-amylase hyperproducing strain, B. subtilis NA64, and the major part of the plasmid pTUB4 which was derived from pUB110. When an Escherichia coli beta-lactamase gene, lacking its own promoter and signal sequence coding region, was introduced into the secretion vector system, beta-lactamase was expressed in B. subtilis. In addition, more than 95% of the enzyme synthesized was secreted into the culture medium via the secretion vector system. Secreted beta-lactamase crossreacted with rabbit antiserum raised against the E. coli enzyme.
mesh_terms: D001412:Bacillus subtilis / Q000201:enzymology* / Q000235:genetics; D001483:Base Sequence; D004587:Electrophoresis, Agar Gel; D004591:Electrophoresis, Polyacrylamide Gel; D004926:Escherichia coli / Q000201:enzymology* / Q000235:genetics; D005796:Genes; D005822:Genetic Vectors; D009876:Operon; D010455:Peptides / Q000235:genetics*; D010957:Plasmids; D021382:Protein Sorting Signals; D000516:alpha-Amylases / Q000235:genetics*; D001618:beta-Lactamases / Q000235:genetics*
chemical_list: D010455:Peptides; D021382:Protein Sorting Signals; D000516:alpha-Amylases; D001618:beta-Lactamases