+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-3592 | |||||||||
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タイトル | Cryo-EM structure of RNA polymerase I in complex with Rrn3 and Core Factor (Orientation I) | |||||||||
マップデータ | ||||||||||
試料 |
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機能・相同性 | 機能・相同性情報 RNA polymerase I transcription regulatory region sequence-specific DNA binding / RNA polymerase I core factor complex / RNA polymerase I core promoter sequence-specific DNA binding / RNA polymerase I core binding / rDNA binding / RNA polymerase I general transcription initiation factor binding / RNA polymerase I general transcription initiation factor activity / RNA polymerase III activity / RNA polymerase I preinitiation complex assembly / RNA Polymerase I Transcription Initiation ...RNA polymerase I transcription regulatory region sequence-specific DNA binding / RNA polymerase I core factor complex / RNA polymerase I core promoter sequence-specific DNA binding / RNA polymerase I core binding / rDNA binding / RNA polymerase I general transcription initiation factor binding / RNA polymerase I general transcription initiation factor activity / RNA polymerase III activity / 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 / regulation of cell size / RNA Pol II CTD phosphorylation and interaction with CE / Formation of the Early Elongation Complex / mRNA Capping / Formation of TC-NER Pre-Incision Complex / RNA polymerase II transcribes snRNA genes / RNA Polymerase I Promoter Escape / TP53 Regulates Transcription of DNA Repair Genes / Estrogen-dependent gene expression / 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 / Dual incision in TC-NER / RNA polymerase I activity / termination of RNA polymerase I transcription / transcription initiation at RNA polymerase III promoter / tRNA transcription by RNA polymerase III / 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 elongation by RNA polymerase I / RNA polymerase I complex / transcription by RNA polymerase I / RNA polymerase III complex / transcription by RNA polymerase III / RNA polymerase II, core complex / TBP-class protein binding / promoter-specific chromatin binding / transcription elongation by RNA polymerase II / transcription initiation at RNA polymerase II promoter / ribonucleoside binding / ポリメラーゼ / ペルオキシソーム / リボソーム生合成 / RNA polymerase II-specific DNA-binding transcription factor binding / transcription by RNA polymerase II / nucleic acid binding / protein dimerization activity / 核小体 / negative regulation of transcription by RNA polymerase II / DNA binding / zinc ion binding / 核質 / metal ion binding / 細胞核 / 細胞質 類似検索 - 分子機能 | |||||||||
生物種 | Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (パン酵母) / Baker's yeast (パン酵母) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 7.7 Å | |||||||||
データ登録者 | Engel C / Gubbey T / Neyer S / Sainsbury S / Oberthuer C / Baejen C / Bernecky C / Cramer P | |||||||||
引用 | ジャーナル: Cell / 年: 2017 タイトル: Structural Basis of RNA Polymerase I Transcription Initiation. 著者: Christoph Engel / Tobias Gubbey / Simon Neyer / Sarah Sainsbury / Christiane Oberthuer / Carlo Baejen / Carrie Bernecky / Patrick Cramer / 要旨: Transcription initiation at the ribosomal RNA promoter requires RNA polymerase (Pol) I and the initiation factors Rrn3 and core factor (CF). Here, we combine X-ray crystallography and cryo-electron ...Transcription initiation at the ribosomal RNA promoter requires RNA polymerase (Pol) I and the initiation factors Rrn3 and core factor (CF). Here, we combine X-ray crystallography and cryo-electron microscopy (cryo-EM) to obtain a molecular model for basal Pol I initiation. The three-subunit CF binds upstream promoter DNA, docks to the Pol I-Rrn3 complex, and loads DNA into the expanded active center cleft of the polymerase. DNA unwinding between the Pol I protrusion and clamp domains enables cleft contraction, resulting in an active Pol I conformation and RNA synthesis. Comparison with the Pol II system suggests that promoter specificity relies on a distinct "bendability" and "meltability" of the promoter sequence that enables contacts between initiation factors, DNA, and polymerase. | |||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | EMマップ: SurfViewMolmilJmol/JSmol |
添付画像 |
-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_3592.map.gz | 48.7 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-3592-v30.xml emd-3592.xml | 35.5 KB 35.5 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_3592.png | 152.4 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-3592 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-3592 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_3592.map.gz / 形式: CCP4 / 大きさ: 52.7 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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
-試料の構成要素
+全体 : RNA polymerase I in complex with Rrn3 and Core Factor
+超分子 #1: RNA polymerase I in complex with Rrn3 and Core Factor
+超分子 #2: RNA polymerase I
+超分子 #3: Initiation factor Rrn3
+超分子 #4: Core Factor
+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: RNA polymerase I-specific transcription initiation factor RRN3
+分子 #16: RNA polymerase I-specific transcription initiation factor RRN6
+分子 #17: RNA polymerase I-specific transcription initiation factor RRN7
+分子 #18: RNA polymerase I-specific transcription initiation factor RRN11
+分子 #19: 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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解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
濃度 | 0.1 mg/mL |
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緩衝液 | pH: 7.8 |
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 100 % / チャンバー内温度: 298 K / 装置: FEI VITROBOT MARK IV |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELDBright-field microscopy |
撮影 | フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 平均電子線量: 40.0 e/Å2 |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
-画像解析
初期 角度割当 | タイプ: ANGULAR RECONSTITUTION |
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最終 角度割当 | タイプ: ANGULAR RECONSTITUTION |
最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 7.7 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用した粒子像数: 8317 |
-原子モデル構築 1
精密化 | プロトコル: RIGID BODY FIT |
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得られたモデル | PDB-5n60: |