exopeptidase

exopeptidase

 [ek″so-pep´tĭ-dās]

a proteolytic enzyme whose action is limited to terminal peptide linkages.

Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

ex·o·pep·ti·dase

(ek'sō-pep'ti-dās),

An enzyme that catalyzes the hydrolysis of the terminal amino acid of a peptide chain; for example, carboxypeptidase. Compare: endopeptidase.

Farlex Partner Medical Dictionary © Farlex 2012

exopeptidase

(ĕk′sō-pĕp′tĭ-dās′, -dāz′)

n.

Any of a group of enzymes that catalyze the hydrolysis of single amino acids from the end of a polypeptide chain.

The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

ex·o·pep·ti·dase

(eks'ō-pep'ti-dās)

An enzyme that catalyzes the hydrolysis of the terminal amino acid of a peptide chain (e.g., carboxypeptidase).
Compare: endopeptidase

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

exopeptidase

An enzyme that acts to split off AMINO ACIDS or sometimes dipeptides from the ends of a protein molecule.

Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

exopeptidase

a type of protein-splitting ENZYME that hydrolyses the terminal PEPTIDE BONDS rather than those bonds within the chain. There are three main types of exopeptidase in the mammalian gut, each attacking a particular area of the protein: carboxypeptidase attacks the carboxyl end of the chain; aminopeptidase attacks the amino end of the chain; dipeptidase breaks the bond between DIPEPTIDES. Such enzymes complete the digestion of protein prior to absorption into the blood stream. Compare ENDOPEPTIDASE.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005