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The Determination of Protease Specificity in Mouse Tissue Extracts by MALDI-TOF Mass Spectrometry: Manipulating PH to Cause Specificity Changes
Published on: May 25, 2018
Complementary positional proteomics for screening substrates of endo- and exoproteases
Petra Van Damme1, An Staes, Silvia Bronsoms
1Department of Medical Protein Research, Vlaams Instituut voor Biotechnologie, Ghent, Belgium.
Abstract:
We describe a positional proteomics approach to simultaneously analyze N- and C-terminal peptides and used it to screen for human protein substrates of granzyme B and carboxypeptidase A4 in human cell lysates. This approach allowed comprehensive proteome studies, and we report the identification of 965 database-annotated protein C termini, 334 neo-C termini resulting from granzyme B processing and 16 neo-C termini resulting from carboxypeptidase A4 processing.
