You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is What is the role of CAP in a Lac operon? and explain in detail?
Catabolite repression is an example of positive regulation. Binding of CAP-cAMP complex at the CAP site enhance the transcription rate of the lac operon. CAP-cAMP complex exes a positive control of transcription. Lac I repressor exes negative control. Ref: Lewin's Essential Genes By Jocelyn E. Krebs, Page 300; Fundamental Bacterial Genetics By Nancy Jo Trun, J. E. Trempy, Page 200; High-Yield Cell and Molecular Biology By Ronald W. Dudek, Pa 845, Page 102; Energy Systems for Residential Buildings By David R. Hyde, Robe Carrow, Page 653