What would happen in bacterial cells that had acquired a mut

What would happen in bacterial cells that had acquired a mutation in the gene for the Trp Repressor such that the protein could no longer bind to DNA?

Solution

Ques-1: What would happen in bacterial cells that had acquired a mutation in the gene for the Trp Repressor such that the protein could no longer bind to DNA?

Answer:

As told before if the trypophan is crucial for the survival of the prokaryote E. coli , thereby trp levels are very less then trp repressor will not go for considerable binding with the operator site finally trp operon genes will be transcribed. Vice versa, if the tryptophan levels are high genes turned off by repressor binding.

Absence of a functional Trp repressor protein is due to \"mutant trpA gene\" & bacterial strains containing this mutant trpA gene are leading to “no transcriptional control of trp operon” in the functional Trp repressor. This is due to Trp repressor is going to bind with operon genes of prokaryotic genome during high level of cytoplasmic tryptophan result in \"triggering of transcription\". Therefore, absence of trp repressor is leading to no chance of binding to operator region to control transcription