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

(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.

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.
References in periodicals archive ?
How do enhancers and repressors work across such large distances--and perhaps more interestingly, how is it that they're specific?
ISOLATION, PURIFICATION, MODELING, AND BINDING SITE ANALYSIS OF THE SALMONELLA BACTERIOPHAGE [epsilon]34 REPRESSOR FOR SUBSEQUENT CRYSTALLIZATION AND STRUCTURE-FUNCTION STUDIES.
Mathematical analysis of the kinetics of the lac repressor operator interaction in the E.
We decided to analyze the whole transcriptional network, observe the number of transcription factors, calculate the RI for each gene, and obtain the overall activators and repressors.
Our results agree with the assumption that SCO1678 encodes a repressor of the gnt genes.
The UC Santa Cruz researchers have, for the first time, identified genes in humans that make repressor proteins to shut down specific jumping genes.
However, when the expression level is high enough, it rather plays as a passive repressor by competing CREB/CREM/ATF1 transcriptional activators for binding to CRE (Figure 2).
In the present study, therefore, our aim was to establish whether or not repressors experienced fewer aversive images when using the TNT paradigm than when it was not used.
"We discovered that the Notch protein, which is involved in the development of most tissues, is responsible for activating the gene GATA2 which is necessary to generate hematopoietic stem cells; at the same time, it induces the reproduction of its own repressor, HES-1," said Anna Bigas, the coordinator of the research group on stem cells and cancer at IM1M:
Although they might be at a higher risk of developing certain illnesses, recovery from a range of conditions appears to be faster among repressors.
In the classic molecular genetic studies, prokaryotic promoters were believed to be regulated by a single specific regulatory protein, either a repressor and an activator, as originally identified in the lac operon regulation by LacI repressor.
"Many former repressors continue fulfilling official functions in the police and military security forces," said Teresita Asilvera, a CCS leader.