Structural basis of transcription: role of the trigger loop in substrate specificity and catalysis by Dong Wang and others

Dong Wang, David A. Bushnell, Kenneth D. Westover, Craig D. Kaplan and Roger D. Kornberg, Cell 127(5), 941–954 (2006), DOI 10.1016/j.cell.2006.11.023. Abstract and Figures 1–2: correct NTP positioning, trigger-loop closure and contacts with base, sugar and phosphates. Primary manuscript pmc.ncbi.nlm.nih.gov/articles/PMC1876690/ .