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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

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]
Farlex Partner Medical Dictionary © Farlex 2012

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.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

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.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

operon

a genetic unit comprising a set of structural genes that is coordinately expressed. see OPERON MODEL.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

op·er·on

(op'ĕr-on)
A genetic functional unit that controls production of a messenger RNA.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
# Components of the LPS modification system (mgrB, phoP, phoQ, and the pmr operon) are present in the annotated genome of C.
The copper-binding operon system (PcoBCDE and CusR/S), which is known to transport copper-derived compounds out of the bacterial cell to balance the concentration of copper salts, was elaborated on the pRJ1004 plasmid of E.
All 14 VRSA identified in the United States appear to have independently acquired the vanA operon. Transmission of VRSA beyond the index patients has not been detected.
Operon Resource Management in Lowell provides job training and workforce solutions for healthcare product manufacturers, including medical device and pharmaceutical companies.
The first clinical MRSA isolate exhibiting high-level resistance to glycopeptides (vancomycin MIC > 256 [micro]g/ml; teicoplanin MIC=128 [micro]g/ml) due to acquisition of the vanA operon was detected in 2002 from Michigan.
Berchtold has recently introduced the OPERON D Series surgical tables.