A chemical which, when bound to a repressor protein, shuts off expression of a gene; usually the chemical produced by the enzymes coded for by that gene.
In the field of molecular biology, a corepressor is a substance that inhibits the expression of genes. In prokaryotes, corepressors are small molecules whereas in eukaryotes, corepressors are proteins. A corepressor does not directly bind to DNA, but instead indirectly regulates gene expression by binding to repressors. A corepressor downregulates...Found on http://en.wikipedia.org/wiki/Corepressor
(ko″re-pres´әr) a small molecule that combines with a protein aporepressor molecule to form an active substance, which then binds to an operator gene and inhibits the synthesis of an enzyme.Found on http://www.encyclo.co.uk/local/21001
An effector molecule which can bind to a repressor molecule, so that together the effector repressor complex can stop transcription of a gene. ... (09 Oct 1997) ... Found on http://www.encyclo.co.uk/local/20973
Type: Term Pronunciation: kō′rē-pres′ŏr Definitions: 1. 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. ...Found on http://www.medilexicon.com/medicaldictionary.php?t=20435
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