Lexic.us

Definition of Operon

1. Noun. A segment of DNA containing adjacent genes including structural genes and an operator gene and a regulatory gene.

Definition of Operon

1. Noun. A unit of genetic material that functions in a coordinated manner by means of an operator, a promoter, and structural genes that are transcribed together. ¹

¹ Source: wiktionary.com

Definition of Operon

1. a type of gene cluster [n -S]

Medical Definition of Operon

1. Groups of bacterial genes with a common promotor, that are controlled as a unit and produce mRNA as a single piece, polycistronic messenger. An operon consists of two or more structural genes, which usually code for proteins with related metabolic functions and associated control elements that regulate the transcription of the structural genes. The first described example was the lac operon. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Lexicographical Neighbors of Operon

Literary usage of Operon

Below you will find example usage of this term as found in modern and/or classical literature:

1. Science by American Association for the Advancement of Science (1883)
"(ii) Is any chromosomal site in the lac operon required ... Scheme of cyclic AMP action on the lac operon. The heavy arrows indicate gene products and the ..."

2. Biotechnology: Plant Nutrition: A Bibliography, January 1988-April 1993 by Janet Saunders (1994)
"At high oxygen concentrations, the operon is expressed at a moderate level, subject to activation by the binding of a trans-acting factor to the UAS. ..."

3. Key and Elphinstone's Compendium of Precedents in Conveyancing by Thomas Key, Howard Warburton Elphinstone (1899)
"Profits of firm. not affect the operon of these pants, hut the exs or ads of the deceased pty shl he substituted for him with regard to these ..."

4. Pathogens of Soybean Seeds: Bibliographyby Andrew Kalinski by Andrew Kalinski (1994)
"... operon in Bradyrhizobium japonicum, soybean seeds also excrete compounds ... of this operon in the presence of a suboptimal genistein concentration. ..."

5. Biotechnology of Algae: A Bibliography by Virginia Stone (1992)
"442.8 Z34 Abstract: A novel ribosomal protein operon in the Euglena gracilis ... The major transcript from this operon was characterized as a fully spliced ..."

6. Biotechnology for Water Use and Conservation: The Mexico '96 Workshop by OECD Staff, Mexico '96 Workshop, (Paris) Organisation for Economic Co-ope, Organisation for Economic Co-operation, Development., Zapata, Francisco Bolívar (1997)
"... at very high concentration, without any cytotoxic effect (upper operon ... operon). At the present time, several cassettes are ready (oriV cassette, ..."

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