repressor protein
(re-pres\'or)
A protein coded for by a regulator gene that can bind to the operator and inhibit transcription; it may be active by itself or only when the corepressor is bound to it.

Microbiology. . 2009.

Look at other dictionaries:

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  • repressor — [ri pres′ər] n. something that represses; esp., a protein produced in a cell that prevents the synthesis of a specific enzyme: also sp. represser …   English World dictionary

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  • repressor — The product of a regulator or r. gene. active r. a r. that combines directly with an operator gene to repress the operator and its structural genes, thus repressing protein synthesis; an active r. may be repressed by an …   Medical dictionary

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