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 ...
When glucose, but not lactose, is available in the cell, the LacI binds to the O 1 sequence, preventing RNA polymerase from binding to the promoter region. However, due to protein kinetics, a small ...
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 ...
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