[ ek-soh-pep-ti-deys, -deyz ]
/ ˌɛk soʊˈpɛp tɪˌdeɪs, -ˌdeɪz /

noun Biochemistry.

any enzyme that catalyzes the removal of an amino acid from the end of a polypeptide chain.
Compare endopeptidase.

Origin of exopeptidase

First recorded in 1935–40; exo- + peptidase
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for exopeptidase

/ (ˌɛksəʊˈpɛptɪˌdeɪz) /


any proteolytic enzyme, such as erepsin, that acts on the terminal bonds in a peptide chainCompare endopeptidase
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for exopeptidase

[ ĕk′sō-pĕptĭ-dās′, -dāz′ ]


Any of a group of enzymes that catalyze the hydrolysis of single amino acids from the end of a polypeptide chain.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.