Panaghie G. et al. 2000
Panaghie G., Aiyar S. E., Bobb K. L., Hayward R. S., de Haseth P. L. 2000. Aromatic amino acids in region 2.3 of Escherichia coli sigma 70 participate collectively in the formation of an RNA polymerase-promoter open complex. J Mol Biol 299: 1217-1230.