The lac operon genes are expressed to digest the available lactose until this sugar is depleted, at which point the operon shuts down. However, the lac operon was far from solved. “ [It] turned out ...

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 ...

How do bacteria avoid wasteful production of unnecessary proteins when their genes are always on? The answer lies in regulating the operon. As trp levels increase, trp binds to trpR, causing a ...

The 92-year-old bacterial geneticist who helped pioneer the study of gene regulation has passed away. A series of rodent experiments showed that even with abundant food and water, personal space is ...

New research suggests a possible explanation for the organization of operons, jointly controlled clusters of genes that evolved in bacterial chromosomes. Operons, which are found in the chromosomes of ...