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corepressor

Pronunciation: ko're-pres'or

Definition: A molecule, usually a product of a specific metabolic pathway (nuclear protein), which combines with and activates a repressor produced by a regulator gene. The activated repressor then attaches to an operator gene site and inhibits activity of the structural genes. This homeostatic mechanism negatively regulates enzyme production in repressible enzyme systems.

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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