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基本情報
登録情報 | データベース: EMDB / ID: EMD-3446 | |||||||||
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タイトル | RNA Polymerase I open complex | |||||||||
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機能・相同性 | ![]() RNA polymerase I preinitiation complex assembly / 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 / regulation of cell size / TP53 Regulates Transcription of DNA Repair Genes ...RNA polymerase I preinitiation complex assembly / 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 / regulation of cell size / 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 / RNA Polymerase II Pre-transcription Events / termination of RNA polymerase III transcription / Formation of TC-NER Pre-Incision Complex / termination of RNA polymerase I transcription / RNA polymerase III activity / transcription initiation at RNA polymerase III promoter / RNA Polymerase I Promoter Escape / 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 / tRNA transcription by RNA polymerase III / RNA polymerase I activity / RNA polymerase I complex / RNA polymerase III complex / RNA polymerase II, core complex / promoter-specific chromatin binding / transcription initiation at RNA polymerase II promoter / transcription elongation by RNA polymerase II / ribonucleoside binding / DNA-directed RNA polymerase / ribosome biogenesis / peroxisome / nucleic acid binding / RNA polymerase II-specific DNA-binding transcription factor binding / transcription by RNA polymerase II / protein dimerization activity / nucleolus / negative regulation of transcription by RNA polymerase II / DNA binding / zinc ion binding / nucleoplasm / nucleus / metal ion binding / cytoplasm 類似検索 - 分子機能 | |||||||||
生物種 | ![]() ![]() ![]() ![]() | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.8 Å | |||||||||
![]() | Tafur L / Sadian Y / Hoffmann NA / Jakobi AJ / Wetzel R / Hagen WJH / Sachse C / Muller CW | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Molecular Structures of Transcribing RNA Polymerase I. 著者: Lucas Tafur / Yashar Sadian / Niklas A Hoffmann / Arjen J Jakobi / Rene Wetzel / Wim J H Hagen / Carsten Sachse / Christoph W Müller / ![]() 要旨: RNA polymerase I (Pol I) is a 14-subunit enzyme that solely synthesizes pre-ribosomal RNA. Recently, the crystal structure of apo Pol I gave unprecedented insight into its molecular architecture. ...RNA polymerase I (Pol I) is a 14-subunit enzyme that solely synthesizes pre-ribosomal RNA. Recently, the crystal structure of apo Pol I gave unprecedented insight into its molecular architecture. Here, we present three cryo-EM structures of elongating Pol I, two at 4.0 Å and one at 4.6 Å resolution, and a Pol I open complex at 3.8 Å resolution. Two modules in Pol I mediate the narrowing of the DNA-binding cleft by closing the clamp domain. The DNA is bound by the clamp head and by the protrusion domain, allowing visualization of the upstream and downstream DNA duplexes in one of the elongation complexes. During formation of the Pol I elongation complex, the bridge helix progressively folds, while the A12.2 C-terminal domain is displaced from the active site. Our results reveal the conformational changes associated with elongation complex formation and provide additional insight into the Pol I transcription cycle. | |||||||||
履歴 |
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構造の表示
ムービー |
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構造ビューア | EMマップ: ![]() ![]() ![]() |
添付画像 |
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マップデータ | ![]() | 2.7 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 29.4 KB 29.4 KB | 表示 表示 | ![]() |
FSC (解像度算出) | ![]() | 6.3 KB | 表示 | ![]() |
画像 | ![]() | 105.6 KB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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ボクセルのサイズ | X=Y=Z: 1.35 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
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試料の構成要素
+全体 : RNA Polymerase I Open Complex
+超分子 #1: RNA Polymerase I Open Complex
+超分子 #2: Transcription scaffold
+分子 #1: DNA-directed RNA polymerase I subunit RPA190
+分子 #2: DNA-directed RNA polymerase I subunit RPA135
+分子 #3: DNA-directed RNA polymerases I and III subunit RPAC1
+分子 #4: DNA-directed RNA polymerase I subunit RPA14
+分子 #5: DNA-directed RNA polymerases I, II, and III subunit RPABC1
+分子 #6: DNA-directed RNA polymerases I, II, and III subunit RPABC2
+分子 #7: DNA-directed RNA polymerase I subunit RPA43
+分子 #8: DNA-directed RNA polymerases I, II, and III subunit RPABC3
+分子 #9: DNA-directed RNA polymerase I subunit RPA12
+分子 #10: DNA-directed RNA polymerases I, II, and III subunit RPABC5
+分子 #11: DNA-directed RNA polymerases I and III subunit RPAC2
+分子 #12: DNA-directed RNA polymerases I, II, and III subunit RPABC4
+分子 #13: DNA-directed RNA polymerase I subunit RPA49
+分子 #14: DNA-directed RNA polymerase I subunit RPA34
+分子 #15: Non-template strand
+分子 #16: Template strand
+分子 #17: ZINC ION
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
濃度 | 0.2 mg/mL | ||||||||||
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緩衝液 | pH: 7.5 構成要素:
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グリッド | モデル: Quantifoil R2/1 / 材質: COPPER / メッシュ: 200 | ||||||||||
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 100 % / チャンバー内温度: 293.15 K / 装置: FEI VITROBOT MARK II 詳細: 2.5 ul of sample 15 seconds wait time Blot for 8 seconds. |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 検出モード: SUPER-RESOLUTION / 平均電子線量: 40.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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画像解析
-原子モデル構築 1
精密化 | 空間: REAL / プロトコル: OTHER |
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得られたモデル | ![]() PDB-5m5w: |