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Related to Repressor Protein: aporepressor


1. also re·press·er One that represses.
2. Genetics A protein that binds to an operator, blocking transcription of an operon and the enzymes for which the operon codes.


(Genetics) biochem a protein synthesized under the control of a repressor gene, which has the capacity to bind to the operator gene and thereby shut off the expression of the structural genes of an operon


(rɪˈprɛs ər)

a protein that binds DNA at an operator site and thereby prevents transcription of one or more adjacent genes.
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Noun1.repressor - an agent that represses
agent - an active and efficient cause; capable of producing a certain effect; "their research uncovered new disease agents"
References in periodicals archive ?
sup][24],[25] VWRPY interacts with a Groucho/TLE/R-esp repressor protein, and osteocalcin promoter is activated through a VWRPY-dependent mechanism.
Expression of recombinant proteins is induced by, IPTG which binds to the lac repressor protein, inactivating it leading to transcription of sequences downstream of the promoter Expression of the gene facilitated the production of large amounts of the recombinant protein for immunological studies.
The reduction of R1, a novel repressor protein for monoamine oxidase A, in major depressive disorder.
In addition, the Kelch-like ECH-associated protein-1 (Keap1), a repressor protein, and p62, a substrate adaptor sequestosome-1 protein that competes with Nrf2 for binding to Keap1, were examined in the liver by western blot.
Mycoparasitic interaction relieves binding of the Cre1 carbon catabolite repressor protein to promoter sequences of the ech42 (endochitinase-encoding) gene in Trichoderma harzianum.
4EBP1 is a translational repressor protein that binds elF4E in its hypo-phosphorylated state and inhibits the initiation of the translation of mRNA with 5'-UTRs including cydin D1 (Faivre et al.
In the absence of iron, a repressor protein binds to the iron response element (IRE), a stemloop structure in the 5'-leader sequence of ferritin mRNA.
We identified a repressor protein in the clock and found that by removing this protein, the brain clock function was surprisingly improved," Dr.