Bacillus strains with reduced extracellular protease levels

Chemistry: molecular biology and microbiology – Treatment of micro-organisms or enzymes with electrical or... – Modification of viruses

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435 68, 43525231, 435320, 435839, 935 10, 935 56, 935 42, 935 74, C12N 120, C12N 1500, C12P 2100

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048289949

ABSTRACT:
Bacillus strains having reduced levels of extracellular protease are produced by replacing the native chromosomal DNA sequence comprising the gene for an extracellular protease, such as subtilisin, with a partially homologous DNA sequence having an inactivating DNA segment inserted therein. The strains are useful as hosts for the expression and secretion of heterologous polypeptides or proteins.

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