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Unformatted text preview: glucose and lactose, note on the curve whats happening at each stage. Draw molecular models and explain how do lactose and glucose control Lac gene expression? 3. (7 points) How does E. coli sense the level of tryptophan (Trp) to control its biosynthesis (consider both operon and attenuation mechanisms)? Draw models to facilitate your explanation. Design a new Trp sensor in the attenuation mechanism that DOES NOT involve the TrpL (leader); explain how your sensor would work....
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- Spring '09