repressor /re·pres·sor/ (-pres´er) in genetics, a substance produced by a regulator gene that acts to prevent initiation by the operator gene of protein synthesis by the operon.
repressor
repressor [re-pres´or]
re·pres·sor (r -pr s  r)n. 1. One that represses. 2. A protein, especially either of two proteins produced by regulatory genes, that blocks transcription of an operon. |
repressor
[ripres′ər]
Etymology: L, reprimere, to press back
a protein produced by a regulator gene in a bacterial genome. It binds to a sequence of nucleotides in an operator gene, blocking the transcription of one or more structural genes.
repressor [re-pres´or]
that which restrains or inhibits; a specific protein molecule coded for by a regulatory gene, which acts through the cytoplasm to repress the synthesis of a specific protein.
repressor
that which restrains or inhibits; a specific protein molecule coded for by a regulatory gene, which acts to repress the synthesis of a specific protein.
lac repressor
interacts specifically with the lac operator.
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