Lac and Trp Operon | Channels for Pearson

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Structural basis of temperature sensation by the TRP channel TRPV3 - Sobolevsky Lab

TRP - TRP

The trpR gene encodes an allosteric proteinthat binds theamino acid tryptophan and regulates theinitiation of trp operon transcription. Whatwould be the most likely result ofa trpR mutation that eliminated the ability ofthe protein to bind tryptophan?Transcription would not be initiated either in thepresence or in the absence of tryptophan.Transcription would be initiated either in the presence or inthe absence of tryptophan.Transcription would be initiated if tryptophan is absent, butnot if it

1 for each of the e coli strains below determine the expression pattern of the trp e and trp c genes in the presence and absence of tryptophan in the wild type strain genotype r p o att trp 56057