Cramer, P. Department of Molecular Biology, MPI for Biophysical Chemistry, Max Planck Society;
http://ac.els-cdn.com/S0959440X09001663/1-s2.0-S0959440X09001663-main.pdf?_tid=8ea502ca-a547-11e3-a326-00000aab0f01&acdnat=1394121430_04b5c457f97180fcc8ca3e2b860097c0 (Publisher version)
1940726.pdf (Publisher version), 90KB
Cramer, P., & Arnold, E. (2009). Proteins: how RNA polymerases work. Current Opinion in Structural Biology, 19(6), 680-682. doi:10.1016/j.sbi.2009.10.013.