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基本情報
登録情報 | データベース: PDB / ID: 6woo | |||||||||
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タイトル | CryoEM structure of yeast 80S ribosome with Met-tRNAiMet, eIF5B, and GDP | |||||||||
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![]() | RIBOSOME / yeast / initiation / eIF5B / GDP / Met-tRNAiMet | |||||||||
機能・相同性 | ![]() formation of cytoplasmic translation initiation complex / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / eukaryotic 48S preinitiation complex / Negative regulators of DDX58/IFIH1 signaling / regulation of amino acid metabolic process / negative regulation of glucose mediated signaling pathway / positive regulation of translational fidelity / RMTs methylate histone arginines / Protein methylation / mTORC1-mediated signalling ...formation of cytoplasmic translation initiation complex / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / eukaryotic 48S preinitiation complex / Negative regulators of DDX58/IFIH1 signaling / regulation of amino acid metabolic process / negative regulation of glucose mediated signaling pathway / positive regulation of translational fidelity / RMTs methylate histone arginines / Protein methylation / mTORC1-mediated signalling / protein-synthesizing GTPase / Protein hydroxylation / regulation of translational initiation / ribosome-associated ubiquitin-dependent protein catabolic process / GDP-dissociation inhibitor activity / positive regulation of nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / pre-mRNA 5'-splice site binding / Formation of the ternary complex, and subsequently, the 43S complex / Translation initiation complex formation / Ribosomal scanning and start codon recognition / preribosome, small subunit precursor / nonfunctional rRNA decay / response to cycloheximide / cleavage in ITS2 between 5.8S rRNA and LSU-rRNA of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Major pathway of rRNA processing in the nucleolus and cytosol / mRNA destabilization / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / negative regulation of translational frameshifting / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / negative regulation of mRNA splicing, via spliceosome / Formation of a pool of free 40S subunits / preribosome, large subunit precursor / L13a-mediated translational silencing of Ceruloplasmin expression / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / translational elongation / ribosomal large subunit export from nucleus / G-protein alpha-subunit binding / 90S preribosome / positive regulation of protein kinase activity / Ub-specific processing proteases / ribosomal subunit export from nucleus / regulation of translational fidelity / protein-RNA complex assembly / endonucleolytic cleavage in ITS1 to separate SSU-rRNA from 5.8S rRNA and LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / translational termination / maturation of LSU-rRNA / ribosomal small subunit export from nucleus / translation regulator activity / translation initiation factor binding / DNA-(apurinic or apyrimidinic site) endonuclease activity / rescue of stalled ribosome / translation initiation factor activity / cellular response to amino acid starvation / ribosome assembly / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosomal large subunit biogenesis / cytosolic ribosome assembly / protein kinase C binding / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA / translational initiation / small-subunit processome / macroautophagy / maintenance of translational fidelity / modification-dependent protein catabolic process / protein tag activity / cytoplasmic stress granule / rRNA processing / ribosome biogenesis / ribosome binding / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / 5S rRNA binding / ribosomal large subunit assembly / cytosolic small ribosomal subunit / large ribosomal subunit rRNA binding / small ribosomal subunit rRNA binding / cytosolic large ribosomal subunit / cytoplasmic translation / negative regulation of translation / rRNA binding / protein ubiquitination / ribosome / structural constituent of ribosome / G protein-coupled receptor signaling pathway / translation / negative regulation of gene expression / response to antibiotic / GTPase activity / mRNA binding / ubiquitin protein ligase binding / GTP binding / nucleolus / mitochondrion / RNA binding / zinc ion binding / nucleoplasm 類似検索 - 分子機能 | |||||||||
生物種 | ![]() ![]() | |||||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.9 Å | |||||||||
![]() | Wang, J. / Wang, J. / Puglisi, J. / Fernandez, I.S. | |||||||||
![]() | ![]() タイトル: Structural basis for the transition from translation initiation to elongation by an 80S-eIF5B complex. 著者: Jinfan Wang / Jing Wang / Byung-Sik Shin / Joo-Ran Kim / Thomas E Dever / Joseph D Puglisi / Israel S Fernández / ![]() 要旨: Recognition of a start codon by the initiator aminoacyl-tRNA determines the reading frame of messenger RNA (mRNA) translation by the ribosome. In eukaryotes, the GTPase eIF5B collaborates in the ...Recognition of a start codon by the initiator aminoacyl-tRNA determines the reading frame of messenger RNA (mRNA) translation by the ribosome. In eukaryotes, the GTPase eIF5B collaborates in the correct positioning of the initiator Met-tRNA on the ribosome in the later stages of translation initiation, gating entrance into elongation. Leveraging the long residence time of eIF5B on the ribosome recently identified by single-molecule fluorescence measurements, we determine the cryoEM structure of the naturally long-lived ribosome complex with eIF5B and Met-tRNA immediately before transition into elongation. The structure uncovers an unexpected, eukaryotic specific and dynamic fidelity checkpoint implemented by eIF5B in concert with components of the large ribosomal subunit. | |||||||||
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 | 分子: ![]() ![]() |
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ダウンロードとリンク
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PDBx/mmCIF形式 | ![]() | 5.2 MB | 表示 | ![]() |
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PDB形式 | ![]() | 表示 | ![]() | |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
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アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
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リンク
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集合体
登録構造単位 | ![]()
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要素
-RNA鎖 , 6種, 6分子 578234
#1: RNA鎖 | 分子量: 1057318.625 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() |
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#2: RNA鎖 | 分子量: 38951.105 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() |
#3: RNA鎖 | 分子量: 50376.758 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() |
#81: RNA鎖 | 分子量: 578475.125 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() |
#83: RNA鎖 | 分子量: 24583.705 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() |
#84: RNA鎖 | 分子量: 1923.237 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) ![]() ![]() |
+タンパク質 , 76種, 76分子 ABCDEFGHIJLMNOPQRSTUVWXYZabcde...
-タンパク質・ペプチド , 2種, 2分子 ln
#40: タンパク質・ペプチド | 分子量: 6114.286 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() |
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#42: タンパク質・ペプチド | 分子量: 3137.985 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() |
-非ポリマー , 4種, 9分子 






#85: 化合物 | ChemComp-ZN / #86: 化合物 | ChemComp-GDP / | #87: 化合物 | ChemComp-U6A / | #88: 化合物 | ChemComp-MET / | |
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-詳細
研究の焦点であるリガンドがあるか | N |
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Has protein modification | Y |
-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 |
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試料調製
構成要素 | 名称: 80S ribosome with eIF5B, Met-tRNAiMet, mRNA, and GDP タイプ: RIBOSOME / Entity ID: #1-#84 / 由来: NATURAL |
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由来(天然) | 生物種: ![]() ![]() |
緩衝液 | pH: 7 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | 詳細: unspecified |
急速凍結 | 凍結剤: ETHANE |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: TFS KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD |
撮影 | 電子線照射量: 60 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||
3次元再構成 | 解像度: 2.9 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 107000 / 対称性のタイプ: POINT | ||||||||||||||||
原子モデル構築 | プロトコル: RIGID BODY FIT | ||||||||||||||||
原子モデル構築 | PDB-ID: 4V8Y Accession code: 4V8Y / Source name: PDB / タイプ: experimental model |