TRANSCRIPTION / Inhibitor / elongation / active site
機能・相同性
機能・相同性情報
: / Formation of RNA Pol II elongation complex / Formation of the Early Elongation Complex / Transcriptional regulation by small RNAs / RNA Polymerase II Pre-transcription Events / TP53 Regulates Transcription of DNA Repair Genes / FGFR2 alternative splicing / RNA polymerase II transcribes snRNA genes / mRNA Capping / mRNA Splicing - Minor Pathway ...: / Formation of RNA Pol II elongation complex / Formation of the Early Elongation Complex / Transcriptional regulation by small RNAs / RNA Polymerase II Pre-transcription Events / TP53 Regulates Transcription of DNA Repair Genes / FGFR2 alternative splicing / RNA polymerase II transcribes snRNA genes / mRNA Capping / mRNA Splicing - Minor Pathway / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase II Promoter Escape / RNA Polymerase II Transcription Pre-Initiation And Promoter Opening / RNA Polymerase II Transcription Initiation / RNA Polymerase II Transcription Elongation / RNA Polymerase II Transcription Initiation And Promoter Clearance / RNA Pol II CTD phosphorylation and interaction with CE / Estrogen-dependent gene expression / Formation of TC-NER Pre-Incision Complex / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / mRNA Splicing - Major Pathway / positive regulation of nuclear-transcribed mRNA poly(A) tail shortening / organelle membrane / maintenance of transcriptional fidelity during transcription elongation by RNA polymerase II / positive regulation of translational initiation / RNA polymerase I complex / transcription elongation by RNA polymerase I / RNA polymerase III complex / core promoter sequence-specific DNA binding / RNA polymerase II, core complex / tRNA transcription by RNA polymerase III / transcription by RNA polymerase I / translation initiation factor binding / transcription-coupled nucleotide-excision repair / transcription initiation at RNA polymerase II promoter / P-body / euchromatin / ribonucleoside binding / fibrillar center / DNA-directed RNA polymerase / DNA-directed RNA polymerase activity / single-stranded DNA binding / toxin activity / nucleic acid binding / transcription by RNA polymerase II / chromosome, telomeric region / single-stranded RNA binding / protein dimerization activity / nuclear speck / nucleotide binding / RNA-directed RNA polymerase activity / DNA-templated transcription / chromatin binding / nucleolus / mitochondrion / DNA binding / zinc ion binding / metal ion binding / nucleus / cytosol 類似検索 - 分子機能
Alpha-Amanitin / DNA / DNA (> 10) / RNA / RNA (> 10) / DNA-directed RNA polymerase II subunit RPB4 / DNA-directed RNA polymerase II subunit RPB11-a / DNA-directed RNA polymerases I, II, and III subunit RPABC2 / DNA-directed RNA polymerases I, II, and III subunit RPABC3 / DNA-directed RNA polymerase II subunit RPB3 ...Alpha-Amanitin / DNA / DNA (> 10) / RNA / RNA (> 10) / DNA-directed RNA polymerase II subunit RPB4 / DNA-directed RNA polymerase II subunit RPB11-a / DNA-directed RNA polymerases I, II, and III subunit RPABC2 / DNA-directed RNA polymerases I, II, and III subunit RPABC3 / DNA-directed RNA polymerase II subunit RPB3 / DNA-directed RNA polymerase subunit beta / DNA-directed RNA polymerase subunit / DNA-directed RNA polymerase II subunit RPB7 / DNA-directed RNA polymerases I, II, and III subunit RPABC4 / DNA-directed RNA polymerases I, II, and III subunit RPABC1 / DNA-directed RNA polymerase II subunit RPB9 / Alpha-amanitin proprotein 類似検索 - 構成要素
生物種
Sus scrofa (ブタ) Sus Scrofa (ブタ) Amanita phalloides (タマゴテングタケ) synthetic construct (人工物)
ジャーナル: J Biol Chem / 年: 2018 タイトル: Cryo-EM structure of a mammalian RNA polymerase II elongation complex inhibited by α-amanitin. 著者: Xiangyang Liu / Lucas Farnung / Christoph Wigge / Patrick Cramer / 要旨: RNA polymerase II (Pol II) is the central enzyme that transcribes eukaryotic protein-coding genes to produce mRNA. The mushroom toxin α-amanitin binds Pol II and inhibits transcription at the step ...RNA polymerase II (Pol II) is the central enzyme that transcribes eukaryotic protein-coding genes to produce mRNA. The mushroom toxin α-amanitin binds Pol II and inhibits transcription at the step of RNA chain elongation. Pol II from yeast binds α-amanitin with micromolar affinity, whereas metazoan Pol II enzymes exhibit nanomolar affinities. Here, we present the high-resolution cryo-EM structure of α-amanitin bound to and inhibited by its natural target, the mammalian Pol II elongation complex. The structure revealed that the toxin is located in a pocket previously identified in yeast Pol II but forms additional contacts with metazoan-specific residues, which explains why its affinity to mammalian Pol II is ∼3000 times higher than for yeast Pol II. Our work provides the structural basis for the inhibition of mammalian Pol II by the natural toxin α-amanitin and highlights that cryo-EM is well suited to studying interactions of a small molecule with its macromolecular target.
履歴
登録
2017年11月9日
登録サイト: PDBE / 処理サイト: PDBE
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2018年3月21日
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Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Database references / Experimental summary / Data content type: EM metadata / EM metadata / カテゴリ: database_2 / em_admin / Data content type: EM metadata / EM metadata / EM metadata Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _em_admin.last_update
A: DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB1 B: DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB2 C: DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB3 D: DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB3 E: DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC1 F: DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC1 G: DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB7 H: DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC3 I: DNA-directed RNA polymerase II subunit RPB9 J: DNA-directed RNA polymerases I, II, and III subunit RPABC5 K: DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC4 L: DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC4 M: AMATOXIN N: DNA (25-MER) P: RNA (5'-R(P*CP*AP*UP*AP*AP*AP*GP*AP*CP*CP*AP*GP*GP*C)-3') T: DNA (36-MER) ヘテロ分子
DNA-directedRNApolymeraseIIsubunitRPB9 / RNA polymerase II subunit B9 / DNA-directed RNA polymerase II subunit I / RNA polymerase II 14.5 ...RNA polymerase II subunit B9 / DNA-directed RNA polymerase II subunit I / RNA polymerase II 14.5 kDa subunit / RPB14.5
タイプ: Cyclic peptide / クラス: 毒素 / 分子量: 939.004 Da / 分子数: 1 / 由来タイプ: 天然 詳細: ALPHA-AMANITIN, IS AN 8 AMINO-ACID PEPTIDE. THE OUTER LOOP IS FORMED BY A PEPTIDE BOND BETWEEN THE C- AND THE N-TERMINI. THE SIDE-CHAINS OF RESIDUES 2 AND 8 ARE LINKED TO FORM THE INNER LOOP. 由来: (天然) Amanita phalloides (タマゴテングタケ) 参照: UniProt: P85421, Alpha-Amanitin
ALPHA-AMANITIN, AN AMATOXIN, IS A DI-CYCLIC PEPTIDE. HERE, ALPHA-AMANITIN IS REPRESENTED BY THE ...ALPHA-AMANITIN, AN AMATOXIN, IS A DI-CYCLIC PEPTIDE. HERE, ALPHA-AMANITIN IS REPRESENTED BY THE SEQUENCE (SEQRES)
Has protein modification
Y
-
実験情報
-
実験
実験
手法: 電子顕微鏡法
EM実験
試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法
-
試料調製
構成要素
ID
名称
タイプ
Entity ID
Parent-ID
由来
1
Mammalian RNA polymerase II elongation complex inhibited by Alpha-amanitin
COMPLEX
#1-#16
0
NATURAL
2
RNApolymeraseIIelongationcomplex
COMPLEX
#1-#12
1
NATURAL
3
Nucleicacids
COMPLEX
#14-#16
1
RECOMBINANT
4
Alpha-amanitin
COMPLEX
#13
1
NATURAL
分子量
値: 0.607 MDa / 実験値: NO
由来(天然)
ID
Entity assembly-ID
生物種
Ncbi tax-ID
組織
2
2
Sus scrofa (ブタ)
9823
Thymus
3
4
Amanita phalloides (タマゴテングタケ)
67723
4
3
synthetic construct (人工物)
32630
由来(組換発現)
生物種: synthetic construct (人工物)
緩衝液
pH: 7.6
試料
濃度: 0.244 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES