zymogen

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Related to zymogen granules: Enzyme precursors

zymogen

 [zi´mo-jen]
an inactive precursor that is converted into an active enzyme by action of an acid or another enzyme or by other means; a proenzyme. adj., adj zymogen´ic.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

pro·en·zyme

(prō-en'zīm),
The precursor of an enzyme, requiring some change (usually the hydrolysis of an inhibiting fragment that masks an active grouping) to render it active; for example, pepsinogen, trypsinogen, profibrolysin.
Synonym(s): zymogen
Farlex Partner Medical Dictionary © Farlex 2012

zymogen

(zī′mə-jən)
n.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

pro·en·zyme

(prō-en'zīm)
The precursor of an enzyme, requiring some change (usually the hydrolysis of an inhibiting fragment that masks an active grouping) to render it active, e.g., pepsinogen, trypsinogen, profibrinolysin.
Synonym(s): zymogen.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

zymogen

The inactive protein precursor of an ENZYME.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

zymogen

an inactive precursor of an enzyme, particularly those concerned with protein digestion, for example, PEPSINOGEN and TRYPSINOGEN. Zymogens require ACTIVATION ENERGY to become functional.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
(a) Tumor is well circumscribed (H and E, x20); (b) tumor cells exhibited clear cytoplasm, were focally vacuolated, and lacked zymogen granules (H and E, x200); (c) cribriform pattern was also noted with eosinophilic secretion in the glands (H and E, x200).
(a) Prominent microcystic and papillary pattern (H and E, x200); (b) tumor cells with zymogen granules (H andE, x200); (c) PAS with diastase (PAS-D) stain highlighting the zymogen granules (x200); (d) DOG-1 positive tumor cells (x200).
Similar to surgical resection specimens, the cytologic distinction between ACCi, especially one that is zymogen granule poor, and SC on FNA specimen can be diagnostically challenging without molecular or immunohistochemical study [4-9].
Lowe, "The pancreatic zymogen granule membrane protein, GP2, binds Escherichia coli type 1 Fimbriae," BMC Gastroenterology, vol.
Wex et al., "Autoantibodies to GP2, the major zymogen granule membrane glycoprotein, are new markers in Crohn's disease," Clinica Chimica Acta, vol.
monodon had a distinct response to feeding through either digestive enzyme production via formation of zymogen granules (Al-Mohanna et al.
semisulcatas using electron microscopy, with one occurrence of enzyme production in the form of zymogen granules. However, it should be noted that no other authors have found zymogen granules in penaeids (Dall 1992, Icely & Nott 1992).