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SG11 - Gene Regulation Prokaryotes

SG11 - Gene Regulation Prokaryotes - corepressor •...

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Study Guide 11 Gene Regulation in Prokaryotes After these lectures you should be able to: Answer the following questions from your textbook o Chapter 16 2, 3, 4, 5, 7, 10, 19, 20, 23, 25, 28 Explain trans vs. cis acting elements Briefly describe the main levels at which gene expression is controlled Compare and contrast negative inducible, negative repressible, positive inducible and positive repressible operons Explain why grouping genes into an operon can be advantageous for bacteria Using the lac operon function as an example, explain the concept of an operon under negative control that is inducible Using the trp operon function as an example, explain the concept of an operon under negative control that is repressible Describe the functions of the promoter, operator, inducer, repressor, and
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Unformatted text preview: corepressor. • Explain how repressible and inducible enzymes differ and how these differences reflect differences in the pathways they control. • Distinguish between positive and negative control and give examples of each • Explain how CAP is affected by glucose concentration. • Explain attenuation and why it is necessary. WORD LIST allolactose co-repressor positive control antiterminator domain promoter attenuation effector molecule regulatory gene cAMP inducible genes repressor CAP lac operon structural gene catabolite activator protein negative control terminator catabolite repression operator trans cis operon trp operon constitutive genes partial diploid...
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