3 Points The Trp Operon Is A Coordinately Regulated Group Of Genes (TrpA-TrpE) That Are Required For Tryptophan Synthesis In E. Coli. The Presence Of Excess Tryptophan, Which Causes The Repressor To Be Attached To The Operator, Results In Decreased Transcription Of The Trp Operon. Explain The Consequences To The Cell Of A Mutation At The Regulatory Gene

 

 

 

 

 

The Trp operon is a coordinately regulated group of genes (trpA-trpE) that are required for tryptophan synthesis in E. coli. The presence of excess tryptophan, which causes the repressor to be attached to the operator, results in decreased transcription of the trp operon. Explain the consequences to the cell of a mutation at the regulatory gene locus (trpR) that prevents binding of the repressor protein. RNA Polymerase 3 points Promoter Operator DNA PR trpR R trpE trpD trpC trpB trpA T 5'- trpR mRNA Inactive Repressor -3' T Active Repressor R T R Active Repressor