Operator

operator
in an operon, the site at which the repressor binds, shutting off transcription
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row ...
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A DNA region at one end of an operon that acts as the binding site for repressor protein. A DNA sequence that is recognized by a repressor protein or repressor-corepressor complex. When the operator is complexed with the repressor, ...
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Operators and levels of abstraction
To begin with, the usage of operator in mathematics is subsumed in the usage of function: an operator can be taken to be some special kind of function.
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Operator
Main article operator (biology).
An operator is a segment of DNA that regulates the activity of the structural genes of an operon it is linked to, by interacting with a specific repressor or activator.
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Operator
The term introduced by Jacob, Perrin, Sanchez and Monod (1960) for the site at one end of an operon where a repressor molecule binds to the DNA and thereby inhibits transcription.
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operator
A segment of DNA that interacts with a repressor protein to regulate the transcription of the structural genes of an operon.
operon ...
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operator and its associated
structural genes.
The gene encoding the lac repressor is called the I gene. It happens to be located just upstream of the lac promoter.
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Operator
The DNA sequence where a repressor protein reversibly binds to regulate the activity of one or more closely linked structural genes.
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operator A gene responsible for the activation and deactivation of the structural genes.
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operator - site on DNA at which repressor protein binds to prevent transcription, e.g. in the lac operon.
organogenesis - creation of specific tissues and bodily organs by cell interaction and rearrangement following gastrulation.
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Operator. A prokaryotic regulatory element that interacts with a repressor to control the transcription of adjacent structural genes.
Organelle. A cell structure that carries out a specialized function in the life of a cell.
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Modal operators like possibility and impossibility have propositions in their scope. What is possible or impossible is not the event or fact, but the proposition related to them.
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(See Reading frame.) Operator. A prokaryotic regulatory element that interacts with a repressor to control the transcription of adjacent structural genes. Organelle. A cell structure that carries out a specialized function in the life of a cell.
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operator A region of DNA that interacts with a regulatory protein to control the expression of a gene or group of genes.
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One of the first modifications to Angel allows the operator to use a slide bar to vary the contrast of the displayed image. Another enhancement is the automatic display of both the normal gel lanes as well as the special marker lanes.
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As early as 1962, John Holland's work on adaptive systems laid the foundation for later developments; most notably, Holland was also the first to explicitly propose crossover and other recombination operators.
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An operon consists of an operator, promoter, regulator, and structural genes. The regulator gene codes for a repressor protein that binds to the operator, obstructing the promoter (thus, transcription) of the structural genes.
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The region of DNA where the repressor protein binds is the operator site. The promoter site is a region of DNA where RNA polymerase can bind. The entire unit (promoter, operator, and genes) is an operon.
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