Severinov K. et al. 1994a
Severinov K., Fenyo D., Severinova E., Mustaev A., Chait B. T., Goldfarb A., Darst S. A. 1994a. The sigma subunit conserved region 3 is part of "5'-face" of active center of Escherichia coli RNA polymerase. J Biol Chem 269: 20826-20828.
