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- A low-molecular-weight compound or a physical agent that associates with a repressor protein to produce a complex that can no longer bind to the operator. Thus, the presence of the inducer turns on the expression of the gene(s) controlled by the operator.
UN Food and Agriculture Organization - Cite This Source - This Definition
- co-repressor, derepression, down-regulate, effector molecule, gratuitous inducer, inducible gene, repressible gene