CAP in Lac operon is an example of
Positive regulator
Negative regulator
Constitutive expression
Attenuation
Catabolite activator protein(CAP) must bind to cAMP to activate transcription of the lac operon by RNA polymerase. CAP is a transcriptional activator with a ligand-binding domain at the N-terminus and a DNA-binding domain at the C-terminus.
Metabolism of nucleic acids