How does lactose control its metabolism? Use the lac system from E. coli as an example

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Lelia LubowitzLv2

23 Jan 2019

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1. You have discoveredan E. coli mutant that expresses a lac operon capprotein that is unable to bind cAMP. If you grew that mutant inglucose, lactose, IPTG, and glucose and lactose how would the?-galactosidase activity differ from an E. coli straincontaining a functional lac operon? What would happen if youtested an E. coli strain that contains a CAP protein thatcan bind DNA even in the absence of cAMP?