Role of primary structure and disulfide bond formation in beta-lactamase secretion.

Abstract

Plasmid pBR322-encoded beta-lactamase was shown to contain a single disulfide bond, which caused the protein to migrate faster in sodium dodecyl sulfate-polyacrylamide gels than the fully reduced form. A similar difference in mobility of the in vitro synthesized precursor before and after reduction indicates that it also contained a disulfide bond… (More)

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