Evolution of protease activation and specificity via alpha-2-macroglobulin-mediated covalent capture.

ABSTRACT: Tailoring of the activity and specificity of proteases is critical for their utility across industrial, medical and research purposes. However, engineering or evolving protease catalysts is challenging and often labour intensive. Here, we describe a generic method to accelerate this process based on yeast display. We introduce the protease selection system A2M^cap that covalently captures protease catalysts by repurposed alpha-2-macroglobulin (A2Ms). To demonstrate the utility of A2M^cap for protease engineering we exemplify the directed activity and specificity evolution of six serine proteases. This resulted in a variant of Staphylococcus aureus serin-protease-like (Spl) protease SplB, an enzyme used for recombinant protein processing, that no longer requires activati

SUBMITTER: Knyphausen P 

PROVIDER: S-EPMC9918453 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature