a repressor that is inactive until it combines with a corepressor.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
A regulatory protein that, when combined with another corepressor, undergoes allosteric transformation, which allows it to combine with an operator locus and inhibit transcription of certain genes.
Farlex Partner Medical Dictionary © Farlex 2012
in·ac·tive re·pres·sor(in-ak'tiv rĕ-pres'ŏr)
A repressor that cannot combine with an operator gene until it has combined with a corepressor (usually a product of a protein pathway); after activation, the repressor arrests production of the proteins controlled by the operator gene; a homeostatic mechanism for regulation of repressible enzyme systems.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
aporepressora regulatory protein that inhibits the activity of specific genes when in the presence of a COREPRESSOR.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005