+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-5127 | |||||||||
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タイトル | Three-dimensional EM structure of an intact activator-dependent transcription initiation complex | |||||||||
マップデータ | E. coli Class I transcription activation complex | |||||||||
試料 |
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キーワード | transcription / initiation / Class I / activator / RNA polymerase / holoenzyme / sigma70 / open complex / CAP / CRP / cAMP-dependent / DNA / prokaryotic | |||||||||
機能・相同性 | 機能・相同性情報 carbon catabolite repression of transcription / sigma factor antagonist complex / DNA binding, bending / RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / bacterial-type RNA polymerase core enzyme binding / cytosolic DNA-directed RNA polymerase complex / regulation of DNA-templated transcription initiation / sigma factor activity ...carbon catabolite repression of transcription / sigma factor antagonist complex / DNA binding, bending / RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / bacterial-type RNA polymerase core enzyme binding / cytosolic DNA-directed RNA polymerase complex / regulation of DNA-templated transcription initiation / sigma factor activity / bacterial-type flagellum assembly / minor groove of adenine-thymine-rich DNA binding / bacterial-type flagellum-dependent cell motility / nitrate assimilation / cAMP binding / transcription elongation factor complex / protein-DNA complex / regulation of DNA-templated transcription elongation / DNA-templated transcription initiation / transcription antitermination / cell motility / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / response to heat / protein-containing complex assembly / intracellular iron ion homeostasis / sequence-specific DNA binding / protein dimerization activity / DNA-binding transcription factor activity / response to antibiotic / negative regulation of DNA-templated transcription / DNA-templated transcription / regulation of DNA-templated transcription / positive regulation of DNA-templated transcription / magnesium ion binding / DNA binding / zinc ion binding / identical protein binding / membrane / cytosol / cytoplasm 類似検索 - 分子機能 | |||||||||
生物種 | Escherichia coli (大腸菌) / unidentified (未定義) | |||||||||
手法 | 単粒子再構成法 / ネガティブ染色法 / 解像度: 19.8 Å | |||||||||
データ登録者 | Hudson BP / Quispe J / Lara S / Kim Y / Berman HM / Arnold E / Ebright RH / Lawson CL | |||||||||
引用 | ジャーナル: Proc Natl Acad Sci U S A / 年: 2009 タイトル: Three-dimensional EM structure of an intact activator-dependent transcription initiation complex. 著者: Brian P Hudson / Joel Quispe / Samuel Lara-González / Younggyu Kim / Helen M Berman / Eddy Arnold / Richard H Ebright / Catherine L Lawson / 要旨: We present the experimentally determined 3D structure of an intact activator-dependent transcription initiation complex comprising the Escherichia coli catabolite activator protein (CAP), RNA ...We present the experimentally determined 3D structure of an intact activator-dependent transcription initiation complex comprising the Escherichia coli catabolite activator protein (CAP), RNA polymerase holoenzyme (RNAP), and a DNA fragment containing positions -78 to +20 of a Class I CAP-dependent promoter with a CAP site at position -61.5 and a premelted transcription bubble. A 20-A electron microscopy reconstruction was obtained by iterative projection-based matching of single particles visualized in carbon-sandwich negative stain and was fitted using atomic coordinate sets for CAP, RNAP, and DNA. The structure defines the organization of a Class I CAP-RNAP-promoter complex and supports previously proposed interactions of CAP with RNAP alpha subunit C-terminal domain (alphaCTD), interactions of alphaCTD with sigma(70) region 4, interactions of CAP and RNAP with promoter DNA, and phased-DNA-bend-dependent partial wrapping of DNA around the complex. The structure also reveals the positions and shapes of species-specific domains within the RNAP beta', beta, and sigma(70) subunits. | |||||||||
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_5127.map.gz | 1.3 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-5127-v30.xml emd-5127.xml | 18.2 KB 18.2 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_5127_1.tif | 764.8 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-5127 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-5127 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_5127_validation.pdf.gz | 296.4 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_5127_full_validation.pdf.gz | 296 KB | 表示 | |
XML形式データ | emd_5127_validation.xml.gz | 5.2 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-5127 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-5127 | 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_5127.map.gz / 形式: CCP4 / 大きさ: 1.9 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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注釈 | E. coli Class I transcription activation complex | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 4.64 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 : E. coli RNA polymerase holoenzyme (sigma70) and E. coli catabolit...
全体 | 名称: E. coli RNA polymerase holoenzyme (sigma70) and E. coli catabolite activator protein (CAP) bound to 98-mer DNA containing the lac promoter and engineered open transcription bubble |
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要素 |
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-超分子 #1000: E. coli RNA polymerase holoenzyme (sigma70) and E. coli catabolit...
超分子 | 名称: E. coli RNA polymerase holoenzyme (sigma70) and E. coli catabolite activator protein (CAP) bound to 98-mer DNA containing the lac promoter and engineered open transcription bubble タイプ: sample / ID: 1000 / 詳細: Complex formation was verified by gel shift 集合状態: One molecule of RNAP (containing six subunits) and one CAP homodimer bound to a DNA duplex) Number unique components: 3 |
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分子量 | 理論値: 570 KDa |
-分子 #1: Catabolite Activator Protein
分子 | 名称: Catabolite Activator Protein / タイプ: protein_or_peptide / ID: 1 / Name.synonym: CAP / コピー数: 1 / 集合状態: homodimer / 組換発現: Yes |
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由来(天然) | 生物種: Escherichia coli (大腸菌) / 株: K12 |
分子量 | 理論値: 50 KDa |
組換発現 | 生物種: Escherichia coli BL21(DE3) (大腸菌) / 組換プラスミド: pET21(a) |
配列 | GO: regulation of DNA-templated transcription / InterPro: INTERPRO: IPR001808 |
-分子 #3: RNA polymerase holoenzyme (sigma70)
分子 | 名称: RNA polymerase holoenzyme (sigma70) / タイプ: protein_or_peptide / ID: 3 / Name.synonym: RNAP 詳細: Six subunits include alphaI (RpoA), alphaII (RpoA), beta (RpoB), beta prime (RpoC) with C-terminal 6His-tag, omega (RpoZ), and sigma70. コピー数: 1 / 集合状態: heterohexamer / 組換発現: Yes |
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由来(天然) | 生物種: Escherichia coli (大腸菌) / 株: K12 / 別称: Escherichia coli |
分子量 | 理論値: 460 KDa |
組換発現 | 生物種: Escherichia coli BL21(DE3) (大腸菌) 組換プラスミド: pEcABC-H6, pRSFduet-sigma, pCDF-omega |
配列 | GO: DNA-templated transcription |
-分子 #2: lac(ICAP)UP-UV5-bubble
分子 | 名称: lac(ICAP)UP-UV5-bubble / タイプ: dna / ID: 2 / Name.synonym: lac(ICAP)UP-UV5-bubble 詳細: An engineered 98mer duplex based on positions -78 to 20 of the Class I CAP-dependent promoter lac but containing consensus -10 sequence and consensus binding sites for CAP and RNAP alpha-CTD. ...詳細: An engineered 98mer duplex based on positions -78 to 20 of the Class I CAP-dependent promoter lac but containing consensus -10 sequence and consensus binding sites for CAP and RNAP alpha-CTD. Positions -11 to 2 are non-complementary to create an artificial transcription bubble. Top strand 5'-CGCAATAAATGTGATCTAGATCACATTTTAGGCAAAAAAGGCTTTACACTTTATGCTTCCGGCTCGTATAATCGCACCTTATGTGAGCGGATAACAAG-3' Bottom strand 5'-CTTGTTATCCGCTCACAATTCCACACTAATAACGAGCCGGAAGCATAAAGTGTAAAGCCTTTTTTGCCTAAAATGTGATCTAGATCACATTTATTGCG-3' 分類: DNA / Structure: OTHER / Synthetic?: Yes |
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由来(天然) | 生物種: unidentified (未定義) |
分子量 | 実験値: 60 KDa / 理論値: 60 KDa |
-実験情報
-構造解析
手法 | ネガティブ染色法 |
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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 | 6.18 mg/mL |
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緩衝液 | pH: 8 詳細: 25mM HEPES, 100mM KCl, 10mM MgCl2, 1mM DTT, 0.2mM cAMP |
染色 | タイプ: NEGATIVE 詳細: Sample and 2% uranyl formate stain were applied to the grid in rapid succession, with the last drop of stain remaining on the sample for 1 minute. The grid was then submerged in stain and ...詳細: Sample and 2% uranyl formate stain were applied to the grid in rapid succession, with the last drop of stain remaining on the sample for 1 minute. The grid was then submerged in stain and brought up under thin carbon to form an upper sandwich layer. The grid was then blotted and dried for 10 minutes. |
グリッド | 詳細: 400-mesh copper 2.0x0.5 hole pattern C-flat grid covered with thin layer of continuous carbon |
凍結 | 凍結剤: NONE / 装置: OTHER |
-電子顕微鏡法
顕微鏡 | FEI TECNAI F20 |
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温度 | 平均: 293 K |
詳細 | 15 um pixel size on detector |
日付 | 2008年11月4日 |
撮影 | カテゴリ: CCD フィルム・検出器のモデル: TVIPS TEMCAM-F415 (4k x 4k) 実像数: 349 / 平均電子線量: 16 e/Å2 |
電子線 | 加速電圧: 120 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 FIELD / Cs: 2.0 mm / 最大 デフォーカス(公称値): 1.5 µm / 最小 デフォーカス(公称値): 0.5 µm / 倍率(公称値): 50000 |
試料ステージ | 試料ホルダー: standard side-entry room-temperature stage 試料ホルダーモデル: SIDE ENTRY, EUCENTRIC |
実験機器 | モデル: Tecnai F20 / 画像提供: FEI Company |
-画像解析
詳細 | 32816 particles were automatically selected by the Appion DoGpicker initially |
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CTF補正 | 詳細: ACE |
最終 再構成 | アルゴリズム: OTHER / 解像度のタイプ: BY AUTHOR / 解像度: 19.8 Å / 解像度の算出法: FSC 0.5 CUT-OFF / ソフトウェア - 名称: EMAN, SPIDER 詳細: EMAN interleaved with SPIDER correspondence analysis 使用した粒子像数: 14097 |
最終 2次元分類 | クラス数: 280 |
-原子モデル構築 1
初期モデル | PDB ID: |
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ソフトウェア | 名称: Chimera, Yup.scx |
詳細 | Protocol: rigid body, Yup.scx simulated annealing. A complete ternary complex model was generated using multiple PDB entries, with a homology modelling step for RNAP. The model was regularized with PHENIX and the refined against the EM map with Yup.scx using default parameters. |
精密化 | 空間: REAL / プロトコル: RIGID BODY FIT 当てはまり具合の基準: map-derived potential energy |
得られたモデル | PDB-3iyd: |
-原子モデル構築 2
初期モデル | PDB ID: |
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ソフトウェア | 名称: Chimera, Yup.scx |
詳細 | Protocol: rigid body fit followed by Yup.scx simulated annealing. A complete ternary complex model was generated using multiple PDB entries, with a homology modelling step for RNAP. The model was regularized with PHENIX and the refined against the EM map with Yup.scx using default parameters. |
精密化 | 空間: REAL / プロトコル: RIGID BODY FIT 当てはまり具合の基準: map-derived potential energy |
得られたモデル | PDB-3iyd: |
-原子モデル構築 3
初期モデル | PDB ID: Chain - Chain ID: A |
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ソフトウェア | 名称: Chimera, Yup.scx |
詳細 | Protocol: manual fit followed by Yup.scx simulated annealing. A complete ternary complex model was generated using multiple PDB entries, with a homology modelling step for RNAP. The model was regularized with PHENIX and the refined against the EM map with Yup.scx using default parameters. |
精密化 | 空間: REAL / プロトコル: RIGID BODY FIT 当てはまり具合の基準: map-derived potential energy |
得られたモデル | PDB-3iyd: |
-原子モデル構築 4
初期モデル | PDB ID: Chain - Chain ID: A |
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ソフトウェア | 名称: Chimera, Yup.scx |
詳細 | Protocol: rigid body fit followed by Yup.scx simulated annealing. A complete ternary complex model was generated using multiple PDB entries, with a homology modelling step for RNAP. The model was regularized with PHENIX and the refined against the EM map with Yup.scx using default parameters. |
精密化 | 空間: REAL / プロトコル: RIGID BODY FIT 当てはまり具合の基準: map-derived potential energy |
得られたモデル | PDB-3iyd: |
-原子モデル構築 5
初期モデル | PDB ID: |
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ソフトウェア | 名称: Chimera, Modeller, Yup.scx |
詳細 | Protocol: rigid body fit followed by Yup.scx simulated annealing. A complete ternary complex model was generated using multiple PDB entries, with a homology modelling step for RNAP. The model was regularized with PHENIX and the refined against the EM map with Yup.scx using default parameters. |
精密化 | 空間: REAL / プロトコル: RIGID BODY FIT 当てはまり具合の基準: map-derived potential energy |
得られたモデル | PDB-3iyd: |