Studies with the Escherichia coli galactose operon regulatory region carrying a point mutation that simultaneously inactivates the two overlapping promoters. Interactions with RNA polymerase and the cyclic AMP receptor protein
1. Department of Biochemistry, University of Birmingham, PO Box 363, Birmingham B15 2 TT, England;2. Département de Biologie Moléculaire, Institut Pasteur, 25 Rue du Dr Roux, 75724 Paris Cedex 15, France