What is lac operon?

Lac Operon

The lac operon is an operon required for the transport and metabolism of lactose in Escherichia coli and some other enteric bacteria. It consists of three adjacent structural genes, lacZ, lacY and lacA. The genes encode β-galactosidase, lactose permease, and thiogalactoside transacetylase (or galactoside O-acetyltransferase), respectively.

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Some articles on lac operon:

Trp Operon
... Trp operon is an operon - a group of genes that are used, or transcribed, together - that codes for the components for production of tryptophan ... The Trp operon is present in many bacteria, but was first characterized in Escherichia coli ... Discovered in 1953 by Jacques Monod and colleagues, the trp operon in E ...
Lac Operon - Use in Molecular Biology
... The lac gene and its derivatives are amenable to use as a reporter gene in a number of bacterial-based selection techniques such as two hybrid analysis, in which the ... The many lac fusion techniques which include only the lacZ gene are thus suited to the X-gal plates or ONPG liquid broths ...
The trp Operon
... Discovered in 1953 by Jacques Monod and colleagues, the trp operon in E ... coli was the first repressible operon to be discovered ... While the lac operon can be activated by a chemical (allolactose), the tryptophan (Trp) operon is inhibited by a chemical (tryptophan) ...