repressor


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Related to repressor: repressor gene, Lac repressor

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 ?
Auxin allows these genes to perform their function by stimulating the degradation of the repressor proteins.
The trans acting c1 repressor binds to newly infecting P1 phage DNA if the c4 gene product prevents the production of ant, the gene product that interferes with c1 repressor function.
A repressor protein coding sequence with a promoter that is active all of the time; and
For example, it's still possible that with certain chromosomal rearrangements, both the seed-lethal and the repressor traits could spread to a non-GM plant.
Specifically our objectives are: 1) Construction of transcriptional repressors and nucleases for RHO silencing.
With reports of other violations emerging and lenient sentences for abusers, the incident highlights problems in the punishment of convicted repressors from Argentina's 1976-1983 dictatorship.
Kaech of the Howard Hughes Medical Institute and Yale University School of Medicine underscore how IL-7 treatment downregulates levels of a critical repressor of cytokine signaling in immune cells, Socs3, thus allowing for the extensive expansion of naive and effector T cells.
The system also had a built-in on/off control: the inserted EPO-encoding gene was linked to a repressor protein that prevented it from being turned on unless the mice were given the oral drug doxycycline (added to their drinking water).
Bcl-6 is a transcriptional repressor that down-regulates hundreds of genes important for control of function of normal and tumor cells.
Our approach of targeting TrkA at the DNA level using a ZFP repressor delivered directly into the relevant tissue, the affected nerve, derives specificity at two levels and thus avoids possible non-specific effects of a systemic treatment.
REST encodes a transcriptional repressor protein and has already been described as a gene involved in early neural development.
Other accepted abstracts include: Ranexa(R) (ranolazine extended-release tablets) * Long-Term Therapy with Ranolazine Decreases mRNA and Protein Expression of the Transcriptional Repressor Nab1 and the Transcription Factor Egr1 in Dogs with Chronic Heart Failure; Poster, Sunday, March 25, 9:00 - 10:00 a.