Lac Operon Activity, Explore Lac Operon with interactive practice questions. Lac-operon simply refers to the utilization of lactose (as sole carbon source) by the DNA of prokaryotic organisms for transcription and translation. The lac I gene produces the lac repressor protein, which binds to the operator region of the operon and prevents the transcription of the structural The lac I gene produces the lac repressor protein, which binds to the operator region of the operon and prevents the transcription of the structural The lac operon and its regulators were first characterized by studying mutants of E. Positive regulation Regulating the activity of an operon (rather than multiple single genes encoding single proteins) allows better coordination of the synthesis of several proteins at This operon, carrying the structural genes for the utilization of lactose as a carbon source, is depicted in Fig. Understand what a lac operon is and its function, diagram, and structure. The lac operon is controlled by a single promoter, known as the lac promoter, and an operator region, referred to as the lac operator. It encodes the We would like to show you a description here but the site won’t allow us. (Top) Schematic gene organization of the E. Explore the lac operon system, its components, and their roles in gene regulation and metabolic adaptation in bacteria. In summary, the lactose operon is an excellent example of the inducible operon reviewed in Chap.

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