Extracellular proteases increase tolerance of Bacillus subtilis to nafcillin.

Abstract

Mutants of Bacillus subtilis capable of secreting high amounts of protease were highly tolerant to the lethal and lytic effects of nafcillin. Protease-deficient mutants were more susceptible. However, when subtilisin was added to exogenously to a protease-deficient strain, the organism assumed the characteristics of nafcillin tolerance. Similarly, when… (More)

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