Which of the following proteins does not "footprint" the lac operon control region?
A)lac repressor
B)β-galactosidase
C)RNA polymerase
D)cAMP-CAP

Question

Quizplus · Accepted Answer

"Footprinting" is a technique used to identify regions of DNA that are bound by specific proteins. In the case of the lac operon, the lac repressor, RNA polymerase, and cAMP-CAP all bind to the control region and can be detected by footprinting. β-galactosidase is an enzyme that breaks down lactose and is not involved in regulation of the lac operon, so it does not footprint the control region.

Which of the Following Proteins Does Not "Footprint" the Lac