1. The blob operon produces enzymes that convert compound A into compound B. The operon is...

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Biology

1. The blob operon produces enzymes that convert compound A intocompound B. The operon is controlled by a regulatory gene S.Normally, the enzymes are synthesized only in the absence ofcompound B. If gene S is mutated, the enzymes are synthesized inthe presence and in the absence of compound B. Does gene S producea regulatory protein that exhibits positive or negative control? Isthis operon inducible or repressible?
2.A mutation prevents the catabolite activator protein (CAP)from binding to the promoter in the lac operon. What will theeffect of this mutation be on transcription of the operon?
3.Compare the regulation of the lac operon and the effect on theproduction of ÃŸ-galactosidae when E. coli is grown under thefollowing conditions:
a) In the presence of high levels of lactose and absence ofglucose
b) In the presence of high levels of lactose and high levels ofglucose

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Answer 1 An operon is a group of genes that code for proteins that work for the same regulation They have a single promoter also There are inducible and repressible operons The blobe operon here produces enzymes that convert A to B Thus B is the required product and enzymes are needed for its synthesis Thus the operon has to be activated only when B is absent So to control this a regulatory protein is present here the gene code for this protein is S The regulatory protein in the normal case gets translated from the mRNA which got transcribed from the operon This protein get bound with B when it is present will bind to See Answer

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