Biology Define catabolite activator protein (CAP) Asked by bookragstutor 13 years ago 9/10/2012 1:33 AM Last updated by anonymous 13 years ago 9/10/2012 1:33 AM
In E. coli, a helper protein that stimulates gene expression by binding within the promoter region of an operon and enhancing the promoter's ability to associate with RNA polymerase.