- EMDB-3956: RNA Polymerase III - open DNA complex (OC-POL3) -
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基本情報
登録情報
データベース: EMDB / ID: EMD-3956
タイトル
RNA Polymerase III - open DNA complex (OC-POL3)
マップデータ
RNA Polymerase III - DNA Complex
試料
複合体: RNA Polymerase III - DNA Complex
複合体: RNA Polymerase III
タンパク質・ペプチド: x 17種
複合体: DNA
DNA: x 2種
リガンド: x 2種
キーワード
RNA Pol III / promoter opening / transcription
機能・相同性
機能・相同性情報
RNA Polymerase I Transcription Initiation / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase III Transcription Initiation From Type 2 Promoter / RNA Pol II CTD phosphorylation and interaction with CE / Formation of the Early Elongation Complex / mRNA Capping / RNA polymerase II transcribes snRNA genes / TP53 Regulates Transcription of DNA Repair Genes / RNA Polymerase II Promoter Escape / RNA Polymerase II Transcription Pre-Initiation And Promoter Opening ...RNA Polymerase I Transcription Initiation / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase III Transcription Initiation From Type 2 Promoter / RNA Pol II CTD phosphorylation and interaction with CE / Formation of the Early Elongation Complex / mRNA Capping / RNA polymerase II transcribes snRNA genes / TP53 Regulates Transcription of DNA Repair Genes / RNA Polymerase II Promoter Escape / RNA Polymerase II Transcription Pre-Initiation And Promoter Opening / RNA Polymerase II Transcription Initiation / RNA Polymerase II Transcription Initiation And Promoter Clearance / RNA-templated transcription / termination of RNA polymerase III transcription / RNA Polymerase II Pre-transcription Events / Formation of TC-NER Pre-Incision Complex / termination of RNA polymerase I transcription / RNA Polymerase I Promoter Escape / transcription initiation at RNA polymerase III promoter / nucleolar large rRNA transcription by RNA polymerase I / Gap-filling DNA repair synthesis and ligation in TC-NER / transcription initiation at RNA polymerase I promoter / transcription by RNA polymerase I / Estrogen-dependent gene expression / transcription by RNA polymerase III / Dual incision in TC-NER / transcription elongation by RNA polymerase I / RNA polymerase I complex / RNA polymerase III complex / RNA polymerase III activity / RNA polymerase II, core complex / tRNA transcription by RNA polymerase III / RNA polymerase I activity / RNA polymerase II activity / nucleotidyltransferase activity / transcription elongation by RNA polymerase II / transcription initiation at RNA polymerase II promoter / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / peroxisome / ribosome biogenesis / single-stranded DNA binding / transcription by RNA polymerase II / nucleic acid binding / protein dimerization activity / nucleotide binding / nucleolus / mitochondrion / DNA binding / zinc ion binding / nucleoplasm / nucleus / metal ion binding / cytoplasm / cytosol 類似検索 - 分子機能
DNA-directed RNA polymerase III subunit RPC1 / DNA-directed RNA polymerases I and III subunit RPAC1 / DNA-directed RNA polymerase III subunit RPC7 / DNA-directed RNA polymerases I, II, and III subunit RPABC1 / DNA-directed RNA polymerases I, II, and III subunit RPABC2 / DNA-directed RNA polymerases I, II, and III subunit RPABC3 / DNA-directed RNA polymerases I, II, and III subunit RPABC5 / DNA-directed RNA polymerase III subunit RPC2 / DNA-directed RNA polymerase III subunit RPC4 / DNA-directed RNA polymerases I and III subunit RPAC2 ...DNA-directed RNA polymerase III subunit RPC1 / DNA-directed RNA polymerases I and III subunit RPAC1 / DNA-directed RNA polymerase III subunit RPC7 / DNA-directed RNA polymerases I, II, and III subunit RPABC1 / DNA-directed RNA polymerases I, II, and III subunit RPABC2 / DNA-directed RNA polymerases I, II, and III subunit RPABC3 / DNA-directed RNA polymerases I, II, and III subunit RPABC5 / DNA-directed RNA polymerase III subunit RPC2 / DNA-directed RNA polymerase III subunit RPC4 / DNA-directed RNA polymerases I and III subunit RPAC2 / DNA-directed RNA polymerase III subunit RPC3 / DNA-directed RNA polymerase III subunit RPC6 / DNA-directed RNA polymerase III subunit RPC8 / DNA-directed RNA polymerase III subunit RPC5 / DNA-directed RNA polymerases I, II, and III subunit RPABC4 / DNA-directed RNA polymerase III subunit RPC9 / DNA-directed RNA polymerase III subunit RPC10 類似検索 - 構成要素
Biotechnology and Biological Sciences Research Council
BB/K014390/1
英国
Cancer Research UK Programme Foundation
CR-UK C47547/A21536
英国
Wellcome Trust
200818/Z/16/Z
英国
Marie Sklodowska-Curie Intra-European Fellowship
655238
英国
引用
ジャーナル: Nature / 年: 2018 タイトル: Structural basis of RNA polymerase III transcription initiation. 著者: Guillermo Abascal-Palacios / Ewan Phillip Ramsay / Fabienne Beuron / Edward Morris / Alessandro Vannini / 要旨: RNA polymerase (Pol) III transcribes essential non-coding RNAs, including the entire pool of transfer RNAs, the 5S ribosomal RNA and the U6 spliceosomal RNA, and is often deregulated in cancer cells. ...RNA polymerase (Pol) III transcribes essential non-coding RNAs, including the entire pool of transfer RNAs, the 5S ribosomal RNA and the U6 spliceosomal RNA, and is often deregulated in cancer cells. The initiation of gene transcription by Pol III requires the activity of the transcription factor TFIIIB to form a transcriptionally active Pol III preinitiation complex (PIC). Here we present electron microscopy reconstructions of Pol III PICs at 3.4-4.0 Å and a reconstruction of unbound apo-Pol III at 3.1 Å. TFIIIB fully encircles the DNA and restructures Pol III. In particular, binding of the TFIIIB subunit Bdp1 rearranges the Pol III-specific subunits C37 and C34, thereby promoting DNA opening. The unwound DNA directly contacts both sides of the Pol III cleft. Topologically, the Pol III PIC resembles the Pol II PIC, whereas the Pol I PIC is more divergent. The structures presented unravel the molecular mechanisms underlying the first steps of Pol III transcription and also the general conserved mechanisms of gene transcription initiation.