This is a preview. Log in through your library . Abstract A protein possessing both lac repressor and β -galactosidase activities in a single polypeptide of about 155,000 daltons was purified from a ...

The lac Operon Explained In 1964, Jacob and Monod identified the promoter region for RNA polymerase. 9 A few years later, another team mapped the genes of the lac operon —the repressor, promoter, ...

Last week I finally addressed promoters and gave a bit of background on the lac operon. Looking back, I feel that I didn't give the topic of operons adequate treatment. They are a very crucial aspect ...

Using a module exchange approach, we have tested a longstanding model for the role of Cro repressor in λ prophage induction. This epigenetic switch from lysogeny to the lytic state occurs on ...