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 ...

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 ...

This fully-resourced lesson describes the regulatory mechanisms that control gene expression at a transcriptional level. The detailed PowerPoint and accompanying resources have been designed to cover ...