Structural basis of transcription: backtracked RNA polymerase II at 3.4 angstrom resolution.
Wang, D., Bushnell, D.A., Huang, X., Westover, K.D., Levitt, M., Kornberg, R.D.(2009) Science 324: 1203-1206
- PubMed: 19478184 
- DOI: 10.1126/science.1168729
- Primary Citation of Related Structures:  
3GTG, 3GTJ, 3GTK, 3GTL, 3GTM, 3GTO, 3GTP, 3GTQ - PubMed Abstract: 
Transcribing RNA polymerases oscillate between three stable states, two of which, pre- and posttranslocated, were previously subjected to x-ray crystal structure determination. We report here the crystal structure of RNA polymerase II in the third state, the reverse translocated, or "backtracked" state ...