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 ...

Proceedings of the National Academy of Sciences of the United States of America, Vol. 102, No. 19 (May 10, 2005), pp. 6783-6788 (6 pages) A multiscale simulation of a complex between the lac repressor ...

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 ...

Researchers turned programmable proteins into a novel genetic tool, potentially enabling tighter control of gene expression. LacI is a tetrameric protein, using two dimers to bind two specific, ...