Three-dimensional structures of the TAFII-containing complexes TFIID and TFTC

被引:103
作者
Brand, M [1 ]
Leurent, C [1 ]
Mallouh, V [1 ]
Tora, L [1 ]
Schultz, P [1 ]
机构
[1] Univ Strasbourg 1, Inst Genet & Biol Mol & Cellulaire, CNRS, INSERM, F-67404 Illkirch, France
关键词
D O I
10.1126/science.286.5447.2151
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
TBP (TATA-binding protein)-associated factors (TAF(II)s) are components of Large multiprotein complexes such as TFIID, TFTC, STAGA, PCAF/GCN5, and SAGA, which play a key role in the regulation of gene expression by RNA polymerase II. The structures of TFIID and TFTC have been determined at 3.5-nanometer resolution by electron microscopy and digital image analysis of single particles. Human TFIID resembles a macromolecular clamp that contains four globular domains organized around a solvent-accessible groove of a size suitable to bind DNA. TFTC is Larger and contains five domains, four of which are similar to TFIID.
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页码:2151 / 2153
页数:3
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