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-Structure paper
タイトル | Structural insights into preinitiation complex assembly on core promoters. |
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ジャーナル・号・ページ | Science, Vol. 372, Issue 6541, Year 2021 |
掲載日 | 2021年4月30日 |
著者 | Xizi Chen / Yilun Qi / Zihan Wu / Xinxin Wang / Jiabei Li / Dan Zhao / Haifeng Hou / Yan Li / Zishuo Yu / Weida Liu / Mo Wang / Yulei Ren / Ze Li / Huirong Yang / Yanhui Xu / |
PubMed 要旨 | Transcription factor IID (TFIID) recognizes core promoters and supports preinitiation complex (PIC) assembly for RNA polymerase II (Pol II)-mediated eukaryotic transcription. We determined the ...Transcription factor IID (TFIID) recognizes core promoters and supports preinitiation complex (PIC) assembly for RNA polymerase II (Pol II)-mediated eukaryotic transcription. We determined the structures of human TFIID-based PIC in three stepwise assembly states and revealed two-track PIC assembly: stepwise promoter deposition to Pol II and extensive modular reorganization on track I (on TATA-TFIID-binding element promoters) versus direct promoter deposition on track II (on TATA-only and TATA-less promoters). The two tracks converge at an ~50-subunit holo PIC in identical conformation, whereby TFIID stabilizes PIC organization and supports loading of cyclin-dependent kinase (CDK)-activating kinase (CAK) onto Pol II and CAK-mediated phosphorylation of the Pol II carboxyl-terminal domain. Unexpectedly, TBP of TFIID similarly bends TATA box and TATA-less promoters in PIC. Our study provides structural visualization of stepwise PIC assembly on highly diversified promoters. |
リンク | Science / PubMed:33795473 |
手法 | EM (単粒子) |
解像度 | 2.77 - 19.3 Å |
構造データ | EMDB-31075, PDB-7edx: EMDB-31107, PDB-7eg7: EMDB-31108, PDB-7eg8: EMDB-31109, PDB-7eg9: EMDB-31110, PDB-7ega: EMDB-31111, PDB-7egb: EMDB-31112, PDB-7egc: EMDB-31113, PDB-7egd: EMDB-31114, PDB-7ege: EMDB-31115, PDB-7egf: EMDB-31116, PDB-7egg: EMDB-31117, PDB-7egh: EMDB-31118, PDB-7egi: EMDB-31119, PDB-7egj: EMDB-31120: EMDB-31121: EMDB-31122: EMDB-31123: EMDB-31124: EMDB-31125: EMDB-31126: EMDB-31127: EMDB-31128: EMDB-31129: EMDB-31130: EMDB-31131: EMDB-31132: EMDB-31133: EMDB-31134: |
化合物 | ChemComp-ZN: ChemComp-MG: ChemComp-SF4: |
由来 |
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キーワード | TRANSCRIPTION / TFIID / preinitiation complex / core promoter / transcription initiation / TRANSLATION |