Molecular Biology of the Gene 7th Edition by Richard Losick, James Watson, Michael Levine, Tamara Baker, Alexander Gann

Exercise 13

Review Box 18-4 Figure 1. For the following DNA-binding proteins, do you expect a plot of the % DNA bound versus protein concentration to look like the red line or the black line? Explain why.
A. NtrC and the regulatory DNA upstream of the glnA gene
B. CAP in the presence of RNA polymerase and the DNA upstream of the lac operator
C. The amino domain of the ? repressor (carboxyl domain re moved) and the ? repressor operator sites