Required for the transport and metabolism of lactose in Escherichia Coli (E. coli).The lactose operon or lac operon consists of three structural genes namely lacZ, lacY, and lacA that encode proteins ...

The repression of the lac operon in the absence of lactose can be improved through DNA looping, in which LacI binds to O 1 and a second operator sequence, either O 2 or O 3. This increases the local ...

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 ...

You have full access to this article via your institution. Figure 1: Variation of the steady-state β-galactosidase activity with the specific growth rate. Because the β-galactosidase activity of ...

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 ...

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 ...