repressor

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Related to Repressors: repressor gene, aporepressor

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.

re·pres·sor

(rē-pres'ŏr),
The product of a regulator or repressor gene; a molecular entity that prevents the transcription of regulator genes under control of an operator.

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

(rĭ-prĕs′ər)
n.
1. also represser 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.

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.

re·pres·sor

(rē-pres'ŏr)
The product of a regulator or repressor gene.

repressor

a substance, often proteinaceous, that prevents the function of a gene. see OPERON MODEL.

re·pres·sor

(rē-pres'ŏr)
The product of a regulator or repressor gene.

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.
References in periodicals archive ?
Experiments with ZNF 93, which shuts down L1PA retrotransposons, provided a striking illustration of the arms race between jumping genes and repressors.
Days later, the CCS said, "The 696 repressors identified by the CVJ and still enjoying impunity are the Praetorian Guard of a society that we want to change, in the same way that our disappeared companions wanted to change it and the landless campesinos today want to change it.
Aside from the question of why elites turn into repressors, however, readers will wonder why elitism arises in the first place.
Children who were identified as repressors were least likely to report somatic symptoms (Pediatr.
The mechanism by which a key hormone called auxin regulates the growth and development of plants by promoting the degradation of repressor proteins has been discovered by researchers at The University of Texas at Austin.
Mutants having alterations within operator sites occasionally exhibit a virulent phenotype because circulating repressors in the lysogen are unable to bind to mutated operator sites.
increased chest pain) than those labeled repressors; (c) repressors had lower scores on a measure of hostility and Type A personality style (e.
Agreements for automated endoscopic repressors and gas plasma sterilization were awarded to:
The researchers went on to show that the KRAB/KAP1 system works by repressing repressors of mitophagy.
But of course the young Mustafa finally begins to see what kind of a person his father might really be: An honest and loving man who indeed stands by his principles and raises his voice against his repressors but never really takes the full step of protest.
Histone deacetylase (HDAC) enzymes modulate gene expression through the deacetylation of lysine residues on histone proteins and act as transcriptional repressors of genes.
By examining DNA sequences associated with these target genes, the researchers discovered binding sites for three other proteins-Runt, Capicua, and Kruppel-which all act as repressors.