Proceedings of the National Academy of Sciences of the United States of America, Vol. 87, No. 22 (Nov., 1990), pp. 8726-8730 (5 pages) We have cloned and characterized the mtr operon of Bacillus ...
Support for the hypothesis that transcription is initiated before the operator region of the trp-operon of E. coli, and that the repressor, in binding to the operator region, directly blocks the ...