Proteolysis to Identify Protease Substrates: Cleave to Decipher
- PMID: 29710386
- DOI: 10.1002/pmic.201800011
Proteolysis to Identify Protease Substrates: Cleave to Decipher
Abstract
Proteolysis is an irreversible post-translational modification process, characterized by highly precise yet stable cleavage of proteins. Downstream events in signaling processes are reliant on proteolysis triggered by the protease activity. Studies indicate that abnormal proteolytic activity may lead to the manifestation of diseased conditions. Therefore, characterization of proteases may provide clues to understand their role in fundamental cellular processes like cellular growth, differentiation, apoptosis, and survival. The relevance of proteases and their substrates as clinical targets are being studied. Understanding the mechanism of proteolytic activity, the identity, and the role of repertoire of its substrates in a physiological pathway has opened avenues for novel drug designing. However, only a limited knowledge of protease substrates is currently available. In this review, the authors recapitulate the library screening, proteomics, and bioinformatics based approaches that have been employed for the identification of protease substrates.
Keywords: Cellular Library of Peptide Substrates (CLIPS); Combined Fractional Diagonal Chromatography (COFRADIC); Terminal Amine Isotopic Labeling of Substrates (TAILS); peptide library; substrate Identity.
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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