Structural basis of initial RNA polymerase II transcription.
Structural basis of initial RNA polymerase II transcription.
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DOI:
10.1038/emboj.2011.396
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发表时间:
2011-11-04
期刊:
影响因子:
11.4
通讯作者:
Cramer, Patrick
中科院分区:
文献类型:
--
作者:
Cheung, Alan C. M.;Sainsbury, Sarah;Cramer, Patrick
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 non-hydrolyzable nucleoside triphosphate (NTP) in the insertion site +1. The partial OC structure reveals that Pol II positions the melted template strand opposite the active site. The ITC-mimicking structures show that two invariant lysine residues anchor the 3′-proximal phosphate of short RNAs. Short DNA–RNA hybrids adopt a tilted conformation that excludes the +1 template nt from the active site. NTP binding induces complete DNA translocation and the standard hybrid conformation. Conserved NTP contacts indicate a universal mechanism of NTP selection. The essential residue Q1078 in the closed trigger loop binds the NTP 2′-OH group, explaining how the trigger loop couples catalysis to NTP selection, suppressing dNTP binding and DNA synthesis.
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影响因子:
56.9
作者:
Brueckner, Florian;Hennecke, Ulrich;Cramer, Patrick
通讯作者:
Cramer, Patrick
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH
影响因子:
14.9
作者:
Andrecka, Joanna;Treutlein, Barbara;Michaelis, Jens
通讯作者:
Michaelis, Jens
影响因子:
16
作者:
Kaplan, Craig D.;Larsson, Karl-Magnus;Kornberg, Roger D.
通讯作者:
Kornberg, Roger D.