+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 1jqm | ||||||
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タイトル | Fitting of L11 protein and elongation factor G (EF-G) in the cryo-em map of e. coli 70S ribosome bound with EF-G, GDP and fusidic acid | ||||||
要素 |
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キーワード | RIBOSOME (リボソーム) / L11 / EF-G (EF-G) / cryo-EM (低温電子顕微鏡法) / 70s E.coli ribosome / GDP state | ||||||
機能・相同性 | 機能・相同性情報 translational elongation / translation elongation factor activity / GDP binding / large ribosomal subunit rRNA binding / ribosome binding / cytosolic large ribosomal subunit / structural constituent of ribosome / 翻訳 (生物学) / GTPase activity / GTP binding ...translational elongation / translation elongation factor activity / GDP binding / large ribosomal subunit rRNA binding / ribosome binding / cytosolic large ribosomal subunit / structural constituent of ribosome / 翻訳 (生物学) / GTPase activity / GTP binding / magnesium ion binding / 細胞質 類似検索 - 分子機能 | ||||||
生物種 | Escherichia coli (大腸菌) | ||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / Molecular Modeling based on crystal structures / クライオ電子顕微鏡法 / 解像度: 18 Å | ||||||
Model details | This structure was generated by fitting the X-ray crystal structure of L11 and EF-G into the 70S E. ...This structure was generated by fitting the X-ray crystal structure of L11 and EF-G into the 70S E. coli EF-G- (GDP form) bound ribosome map. L11 (linker region between N and C terminal) and EF-G positions of domains G' and V were modeled to accommodate the conformational changes. The structure is modeled as a C-alpha trace. Conformational changes occur in protein L11 and EF-G in two stpes due to the binding of EF-G to the 70S ribosome, and subsequent GTP hydrolysis. These changed conformations were modeled based on the fitting of the crystal coordinates to the low resolution ribosome map (factor-bound) and energy minimizing the fitted structures. | ||||||
データ登録者 | Agrawal, R.K. / Linde, J. / Segupta, J. / Nierhaus, K.H. / Frank, J. | ||||||
引用 | ジャーナル: J Mol Biol / 年: 2001 タイトル: Localization of L11 protein on the ribosome and elucidation of its involvement in EF-G-dependent translocation. 著者: R K Agrawal / J Linde / J Sengupta / K H Nierhaus / J Frank / 要旨: L11 protein is located at the base of the L7/L12 stalk of the 50 S subunit of the Escherichia coli ribosome. Because of the flexible nature of the region, recent X-ray crystallographic studies of the ...L11 protein is located at the base of the L7/L12 stalk of the 50 S subunit of the Escherichia coli ribosome. Because of the flexible nature of the region, recent X-ray crystallographic studies of the 50 S subunit failed to locate the N-terminal domain of the protein. We have determined the position of the complete L11 protein by comparing a three-dimensional cryo-EM reconstruction of the 70 S ribosome, isolated from a mutant lacking ribosomal protein L11, with the three-dimensional map of the wild-type ribosome. Fitting of the X-ray coordinates of L11-23 S RNA complex and EF-G into the cryo-EM maps combined with molecular modeling, reveals that, following EF-G-dependent GTP hydrolysis, domain V of EF-G intrudes into the cleft between the 23 S ribosomal RNA and the N-terminal domain of L11 (where the antibiotic thiostrepton binds), causing the N-terminal domain to move and thereby inducing the formation of the arc-like connection with the G' domain of EF-G. The results provide a new insight into the mechanism of EF-G-dependent translocation. #1: ジャーナル: Cell(Cambridge,Mass.) / 年: 1999 タイトル: A Detailed View of a Ribosomal Active Site: The Structure of the L11-RNA Complex 著者: Wimberly, B.T. / Guymon, R. / McCutcheon, J.P. / White, S.W. / Ramakrishnan, V. #2: ジャーナル: Embo J. / 年: 1994 タイトル: The Crystal Structure of Elongation Factor G Complexed with GDP, at 2.7A Resolution. 著者: Czworkowski, J. / Wang, J. / Steitz, T.A. / Moore, P.B. #3: ジャーナル: Embo J. / 年: 1994 タイトル: Three-dimensional structure of the ribosomal translocase: Elongation factor G from Thermus thermophilus 著者: AEvarsson, A. / Brazhnikov, E. / Garber, M. / Zheltonosova, J. / Chirgadze, Y. / al-Karadaghi, S. / Svensson, L.A. / Liljas, A. #4: ジャーナル: J.Mol.Biol. / 年: 2000 タイトル: Structure of a Mutant EF-G Reveals Domain III and Possibly the Fusidic Acid Binding Site 著者: Laurberg, M. / Kristensen, O. / Martemyanov, K. / Gudkov, A.T. / Nagaev, I. / Hughes, D. / Liljas, A. #5: ジャーナル: Nat.Struct.Biol. / 年: 1999 タイトル: EF-G-dependent GTP hydrolysis induces translocation accompanied by large conformational changes in the 70S ribosome 著者: Agrawal, R.K. / Heagle, A.B. / Penczek, P. / Grassucci, R.A. / Frank, J. | ||||||
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 | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 1jqm.cif.gz | 39.5 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb1jqm.ent.gz | 20.3 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 1jqm.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/jq/1jqm ftp://data.pdbj.org/pub/pdb/validation_reports/jq/1jqm | HTTPS FTP |
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-関連構造データ
-リンク
-集合体
登録構造単位 |
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-要素
#1: タンパク質 | 分子量: 14865.637 Da / 分子数: 1 / 由来タイプ: 天然 詳細: L11 from E. coli 70S ribosome modeled by crystal structure of L11 from Thermatogoma maritima 由来: (天然) Escherichia coli (大腸菌) / 参照: UniProt: P29395 |
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#2: タンパク質 | 分子量: 76963.078 Da / 分子数: 1 / 由来タイプ: 天然 詳細: EF-G from E. coli 70S ribosome modeled by crystal structure of EF-G from Thermus thermophilus 由来: (天然) Escherichia coli (大腸菌) / 参照: UniProt: P13551 |
-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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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 |
NMR実験の詳細 | Text: This structure was generated by fitting the X-ray crystal structure of L11 and EF-G into the 70S E. coli EF-G (GDP form) bound ribosome map. L11 (linker region between N and C terminal) and EF- ...Text: This structure was generated by fitting the X-ray crystal structure of L11 and EF-G into the 70S E. coli EF-G (GDP form) bound ribosome map. L11 (linker region between N and C terminal) and EF-G positions of domains G' and V were modeled to accommodate the conformational changes. |
-試料調製
構成要素 | 名称: e. coli 70S ribosome bound with EF-G, GDP and fusidic acid タイプ: RIBOSOME |
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緩衝液 | pH: 7.6 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
結晶化 | *PLUS 手法: 電子顕微鏡法 |
-電子顕微鏡撮影
顕微鏡 | モデル: FEI/PHILIPS EM420 |
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電子銃 | 電子線源: その他 / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELDBright-field microscopy / 倍率(公称値): 52000 X |
試料ホルダ | 試料ホルダーモデル: GATAN LIQUID NITROGEN |
撮影 | 電子線照射量: 10 e/Å2 / フィルム・検出器のモデル: GENERIC FILM |
-解析
粒子像の選択 | 選択した粒子像数: 36113 | ||||||||||||||||||||
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対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||
3次元再構成 | 解像度: 18 Å / 解像度の算出法: FSC 0.5 CUT-OFF / 粒子像の数: 36113 / 対称性のタイプ: POINT | ||||||||||||||||||||
原子モデル構築 | プロトコル: OTHER / 空間: REAL / Target criteria: VISUAL AGREEMENT 詳細: REFINEMENT PROTOCOL--MANUAL DETAILS--This structure was generated by fitting the X-ray crystal structure of L11 and EF-G into the 70S E. coli EF-G (GDP form) bound ribosome electron ...詳細: REFINEMENT PROTOCOL--MANUAL DETAILS--This structure was generated by fitting the X-ray crystal structure of L11 and EF-G into the 70S E. coli EF-G (GDP form) bound ribosome electron microscopy map. L11 (linker region between N and C terminal) and EF-G positions of domains G and V were modeled to accommodate the conformational changes. Conformational changes occur in protein L11 and EF-G in two steps due to the binding of EF-G to the 70S ribosome, and subsequent GTP hydrolysis. These changed conformations were modeled based on the fitting of the crystal coordinates to the low resolution ribosome map (factor-bound) and energy minimizing the fitted structures. | ||||||||||||||||||||
精密化ステップ | サイクル: LAST
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NMR software |
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精密化 | 手法: Molecular Modeling based on crystal structures / ソフトェア番号: 1 詳細: Conformational changes occur in protein L11 and EF-G in two stpes due to the binding of EF-G to the 70S ribosome, and subsequent GTP hydrolysis. These changed conformations were modeled based ...詳細: Conformational changes occur in protein L11 and EF-G in two stpes due to the binding of EF-G to the 70S ribosome, and subsequent GTP hydrolysis. These changed conformations were modeled based on the fitting of the crystal coordinates to the low resolution ribosome map (factor-bound) and energy minimizing the fitted structures. |