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.
Operator gene
A gene with the function of activating the production of messenger rna by one or more adjacent structural loci; part of the feedback system for determining the rate of production of an enzyme.
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 ...
Operator
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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 ...
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.
Operator
The DNA sequence where a repressor protein reversibly binds to regulate the activity of one or more closely linked structural genes.
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.
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.
Operator A DNA segment that is adjacent to a group of structural genes and is the target sequence for a repressor protein; ...
cooperator - in agricultural parlance, usually refers to the grower who works with a scientist
coprophagous - to feed on excrement, i.e. dung beetles, face flies, etc.
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.
operator A gene responsible for the activation and deactivation of the structural genes.
binds to the operator and prevents the repressor from binding at this site.
E.
binds to the termination codons and allows protein synthesis to continue.
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.
Additionally, Maestro allows queries with mixed Boolean operators for a more refined search. For example, a user may wish to compare relatively long mouse and human sequences that do not contain identified coding regions.
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.
- A protein that binds to the operator locus and thereby inhibits the transcription of adjacent genes by blocking the RNA polymerase from the promoter for those genes
Restriction enzymes
- Bacterial enzymes that cleave DNA at very specific locations.
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.
The metabolite that when bound to the repressor (of a repressible operon) forms a functional unit that can bind to its operator and block transcription.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
Living beings are able to set no-spontaneously (autonomously) a transitory quasi-steady sequence of intervals that delays the spontaneous transference of thermal equilibrium by means of inner operators.
LEVELS OF ORGANIZATION IN BIOLOGY ...
Term coined by Demerec & Hartman (1959) for a group of closely linked genes that code for a series of enzymes for successive steps in a metabolic pathway. If the gene cluster is controlled by an operator the whole unit is called operon.
 See also: Trans, Sequence, DNA, Gene, Protein
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