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 ...

Scientists have been trying to understand the nature and importance of protein-DNA interactions since the early 1960s. Such research started with studies of the association of RNA polymerase with DNA, ...

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 ...