Lac operon
Lac operon The operon that controls the synthesis of acetylase, permease, and beta galactosidase, 3 enzymes involved in the metabolism of lactose in Escherichia coli. The Lac operon is a cluster of structural genes specifying the above enzymes. These genes are controlled by the co-ordinated action of cis-dominant promoter and operator regions, the activity of which is in turn determined by a repressor molecule that is specified by a separate regulator gene. Most of the detailed discovery of this system was worked out by François Jacob and Jacques Monod during the late 1950s and early 1960s; the Lac operon DNA was isolated in pure form in 1969.
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Lac operon
