Atul Narang

The paper investigates whether lactose enzymes promote allolactose accumulation during lac operon induction and repression in E. coli, finding that positive feedback exists and reverses under different conditions.

The paper investigates glucose-mediated repression of the lac operon in E. coli, showing that inducer exclusion alone cannot account for the repression and that positive feedback plays a major role when chloramphenicol is absent.