Structural basis of transcription: -Amanitin-RNA polymerase II cocrystal at 2.8 A resolution
نویسندگان
چکیده
منابع مشابه
Structural basis of transcription: -Amanitin–RNA polymerase II cocrystal at 2.8 Å resolution
T structure of 10-subunit 0.5-MDa yeast RNA polymerase II (pol II), recently determined at 2.8 Å resolution, reveals the architecture and key functional elements of the enzyme (1). The two largest subunits, Rpb1 and Rpb2, lie at the center, on either side of a nucleic acid-binding cleft, with the many smaller subunits arrayed around the outside. Rpb1 and Rpb2 interact extensively in the region ...
متن کاملStructural basis of transcription: an RNA polymerase II-TFIIB cocrystal at 4.5 Angstroms.
The structure of the general transcription factor IIB (TFIIB) in a complex with RNA polymerase II reveals three features crucial for transcription initiation: an N-terminal zinc ribbon domain of TFIIB that contacts the "dock" domain of the polymerase, near the path of RNA exit from a transcribing enzyme; a "finger" domain of TFIIB that is inserted into the polymerase active center; and a C-term...
متن کاملStructural basis of transcription: an RNA polymerase II elongation complex at 3.3 A resolution.
The crystal structure of RNA polymerase II in the act of transcription was determined at 3.3 A resolution. Duplex DNA is seen entering the main cleft of the enzyme and unwinding before the active site. Nine base pairs of DNA-RNA hybrid extend from the active center at nearly right angles to the entering DNA, with the 3' end of the RNA in the nucleotide addition site. The 3' end is positioned ab...
متن کاملStructural basis of transcription: RNA polymerase II at 2.8 angstrom resolution.
Structures of a 10-subunit yeast RNA polymerase II have been derived from two crystal forms at 2.8 and 3.1 angstrom resolution. Comparison of the structures reveals a division of the polymerase into four mobile modules, including a clamp, shown previously to swing over the active center. In the 2.8 angstrom structure, the clamp is in an open state, allowing entry of straight promoter DNA for th...
متن کاملStructural basis of initial RNA polymerase II transcription
During transcription initiation by RNA polymerase (Pol) II, a transient open promoter complex (OC) is converted to an initially transcribing complex (ITC) containing short RNAs, and to a stable elongation complex (EC). We report structures of a Pol II-DNA complex mimicking part of the OC, and of complexes representing minimal ITCs with 2, 4, 5, 6, and 7 nucleotide (nt) RNAs, with and without a ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2002
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.251664698