repressor

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re·pres·sor

 (rĭ-prĕs′ər)
n.
1. also re·press·er One that represses.
2. Genetics A protein that binds to an operator, blocking transcription of an operon and the enzymes for which the operon codes.

repressor

(rɪˈprɛsə)
n
(Genetics) biochem a protein synthesized under the control of a repressor gene, which has the capacity to bind to the operator gene and thereby shut off the expression of the structural genes of an operon

re•pres•sor

(rɪˈprɛs ər)

n.
a protein that binds DNA at an operator site and thereby prevents transcription of one or more adjacent genes.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.repressor - an agent that represses
agent - an active and efficient cause; capable of producing a certain effect; "their research uncovered new disease agents"
References in periodicals archive ?
An ADIOL-ER[beta]-CtBP transrepression pathway negatively regulates microgliamediated inflammation.
Dissociation of transactivation from transrepression by a selective glucocorticoid receptor agonist leads to separation of therapeutic effects from side effects.
Parallel SUMOylation-dependent pathways mediate gene- and signal-specific transrepression by LXRs and PPAR[gamma].