Structure of pol II TFIIB complex. (A) "Top" view of pol II
in a surface representation, with previously identified domains
in the colors indicated, and with TFIIB in ribbon
representation. TFIIB zinc ribbon (TFIIB[N]), linker (TFIIB[L]),
first cyclin repeat (TFIIB[C]) are indicated. (B) Difference
(F[o]-F[c]) electron density map between pol II TFIIB and pol II
alone, contoured at 2.0[sigma], shown in green mesh, and Se-Met
anomalous peaks, contoured at 6-10[sigma], shown in blue mesh.
Science. Author manuscript; available in PMC 2010 January 28.
Published in final edited form as: Science. 2010 January 8;
327(5962): 206. Published online 2009 November 12. doi:
10.1126/science.1182015. Copyright notice and Disclaimer
The above figure is reprinted
from an Open Access publication published by the AAAs: