apoenzyme


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apoenzyme

 [ap″o-en´zīm]
the protein component of an enzyme that requires the presence of the prosthetic group (coenzyme) to form the functioning enzyme.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

ap·o·en·zyme (apo),

(ap'ō-en'zīm),
The protein portion of an enzyme as contrasted with the nonprotein portion, coenzyme, or prosthetic portion (if present in the intact protein).
Farlex Partner Medical Dictionary © Farlex 2012

apoenzyme

(ăp′ō-ĕn′zīm)
n.
The protein component of an enzyme, excluding additional components such as cofactors or inhibitors.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

apoenzyme

The protein part of an enzyme that requires a cofactor/coenzyme. See Apoprotein.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

ap·o·en·zyme

(ap'ō-en-zīm)
The protein portion of an enzyme as contrasted with the nonprotein portion, or coenzyme, or prosthetic portion (if present).
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

apoenzyme

A protein substance which can act as an ENZYME in the presence of a coenzyme.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
References in periodicals archive ?
An apoenzyme blank was also included in each assay to correct for endogenous PLP that might be present in the apoenzyme extract.
The apoenzyme was stable at -80 [degrees]C for 1 year.
(15) and Baines and Davies (16) have suggested that erythrocyte TDP concentrations determined by the apoenzyme recombination technique or by HPLC are a more sensitive index of thiamin status than the measurement of erythrocyte transketolase activity.
They are known to sequester metals in the cell and pass metal ions to the apoenzymes that require them.
Most of the reactions in the canonical anabolic chart require enzymes that may be isolated apoenzymes or holoenzymes (a combination of apoenzymes and coenzymes and/or metal ions).
Alternatively, MT can donate Zn to apoenzymes and transcription factors [16][17] and may thus serve as a labile source of Zn that can be utilized in many different organs to activate as-yet-unidentified metalloenzymes that are essential during the stress condition.