core pressor

corepressor

[koh-ri-pres-er]
noun Genetics.
a molecule that is capable of combining with a specific repressor molecule and activating it, thereby blocking gene transcription.

Origin:
1960–65; co- + repressor

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American Heritage
Medical Dictionary

corepressor co·re·pres·sor (kō'rĭ-prěs'ər)
n.
A substance that combines with and activates a genetic repressor, thus preventing gene transcription and inhibiting protein synthesis.

The American Heritage® Stedman's Medical Dictionary
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