The zymogen of the protease that degrades small, acid-soluble proteins of spores of Bacillus species can rapidly autoprocess to the active enzyme in vitro

Author:

Illades-Aguiar B1,Setlow P1

Affiliation:

1. Department of Biochemistry, University of Connecticut Health Center, Farmington 06030.

Abstract

The zymogen of the protease (GPR) that initiates protein degradation during spore germination in Bacillus species is not activated in vitro under normal physiological conditions. However, there is rapid, acid-pH-dependent, zero-order, proteolytic activation of the purified zymogen in high concentrations of dimethyl sulfoxide. These findings provide further evidence that GPR activates itself during sporulation.

Publisher

American Society for Microbiology

Subject

Molecular Biology,Microbiology

Reference15 articles.

1. Properties of Bacillus subtilis small, acid-soluble spore proteins with changes in the sequence recognized by their specific protease;Camllo-Martinez Y.;J. Bacteriol.,1994

2. Effects of dimethyl sulfoxide on subunit proteins;Henderson T. R.;Ann. N. Y. Acad. Sci.,1975

3. Studies of the processing of the protease which initiates degradation of small, acid-soluble proteins during germination of spores of Bacillus species;Illades-Aguiar B.;J. Bacteriol.,1994

4. Beware of proteins in DMSO;Jackson M. J.;Biochim. Biophys. Acta,1991

5. Bacillus megaterium spore protease: purification, radioimmunoassay, and analysis of antigen level and localization during growth, sporulation, and spore germination;Loshon C. A.;J. Bacteriol.,1982

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