Problem: 1. What would happen to transcription of the lac operon in an E. coli cell without a functional CAP protein? What would happen in a cell without a functional lac repressor? 

FREE Expert Solution

When lactose is present, lac operon loses its ability to bind DNA, clearing the way for RNA transcription of the operon itself. However, without a functional CAP protein, the RNA-binding activity would be weak and would make only a few transcripts. Also, without a cap protein, the e. coli cell, would lose its ability to detect nearby glucose.

View Complete Written Solution
Problem Details

1. What would happen to transcription of the lac operon in an E. coli cell without a functional CAP protein? What would happen in a cell without a functional lac repressor?