operon

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operon

 [op´er-on]
a segment of a chromosome comprising an operator gene and closely linked structural genes having related functions, the activity of the latter being controlled by the operator gene through its interaction with a regulator gene.

op·er·on

(op'ĕr-on),
A genetic functional unit that controls production of a messenger RNA; it consists of an operator gene and two or more structural genes located in sequence in the cis position on one chromosome.
[L. operor, to work, act, + -on]

operon

/op·er·on/ (op´er-on) a segment of a chromosome comprising an operator gene and closely linked structural genes having related functions.

operon

(ŏp′ə-rŏn′)
n.
A unit of genetic material that functions in a coordinated manner by means of an operator, a promoter, and one or more structural genes that are transcribed together.

operon

[op′əron]
Etymology: L, operare, to work
a section of bacterial DNA consisting of an operator gene and one or more structural genes with related functions. Transcription of the structural genes is controlled by the operator gene in conjunction with a regulator gene. See also operator gene, regulator gene.

operon

A row of consecutive genes on a chromosome that operates as a functional unit. The structural genes in the operon are preceded by two regulatory sites occupied by regulatory genes, the promoter and the operator. These are essential for the expression of the operon. The genes in an operon have related functions that occur sequentially. All the genes in the operon are turned on and off together. All are transcribed into one large segment of MESSENGER RNA.

operon

a genetic unit comprising a set of structural genes that is coordinately expressed. see OPERON MODEL.

op·er·on

(op'ĕr-on)
A genetic functional unit that controls production of a messenger RNA.

operon (op´əron´),

n a segment of DNA consisting of an operator gene and one or more structural genes with related functions controlled by the operator gene in conjunction with a regulator gene.

operon

a segment of a chromosome comprising an operator gene and closely linked structural genes having related functions, the activity of the latter being controlled by the operator gene through its interaction with a regulator gene.
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