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| reg·u·la·tor gene (plural reg·u·la·tor genes) or reg·u·la·to·ry gene (plural reg·u·la·to·ry genes) |
noun |
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| Definition: |
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gene that controls another: a gene that regulates the expression of one or more structural genes, thereby controlling the synthesis of their corresponding proteins. In the simplest case, the regulator gene encodes a repressor molecule that binds to a site adjacent to the structural gene, so preventing transcription of the latter.
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