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データを開く
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基本情報
登録情報 | データベース: PDB / ID: 7mpi | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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タイトル | Stm1 bound vacant 80S structure isolated from cbf5-D95A | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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![]() | RIBOSOME / yeast / 80S complex / chemical modification | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
機能・相同性 | ![]() triplex DNA binding / ribosome hibernation / translation elongation factor binding / Platelet degranulation / regulation of translational initiation in response to stress / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / Negative regulators of DDX58/IFIH1 signaling / regulation of amino acid metabolic process / negative regulation of glucose mediated signaling pathway / positive regulation of translational fidelity ...triplex DNA binding / ribosome hibernation / translation elongation factor binding / Platelet degranulation / regulation of translational initiation in response to stress / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / 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 hydroxylation / 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) / telomeric DNA binding / 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) / TOR signaling / 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 repressor activity / DNA-(apurinic or apyrimidinic site) endonuclease activity / rescue of stalled ribosome / telomere maintenance / 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 / 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 / mRNA binding / ubiquitin protein ligase binding / negative regulation of apoptotic process / nucleolus / perinuclear region of cytoplasm / mitochondrion / DNA binding 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: 3.05 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Rai, J. / Zhao, Y. / Li, H. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: CryoEM structures of pseudouridine-free ribosome suggest impacts of chemical modifications on ribosome conformations. 著者: Yu Zhao / Jay Rai / Hongguo Yu / Hong Li / ![]() 要旨: Pseudouridine, the most abundant form of RNA modification, is known to play important roles in ribosome function. Mutations in human DKC1, the pseudouridine synthase responsible for catalyzing the ...Pseudouridine, the most abundant form of RNA modification, is known to play important roles in ribosome function. Mutations in human DKC1, the pseudouridine synthase responsible for catalyzing the ribosome RNA modification, cause translation deficiencies and are associated with a complex cancer predisposition. The structural basis for how pseudouridine impacts ribosome function remains uncharacterized. Here, we characterized structures and conformations of a fully modified and a pseudouridine-free ribosome from Saccharomyces cerevisiae in the absence of ligands or when bound with translocation inhibitor cycloheximide by electron cryomicroscopy. In the modified ribosome, the rearranged N1 atom of pseudouridine is observed to stabilize key functional motifs by establishing predominately water-mediated close contacts with the phosphate backbone. The pseudouridine-free ribosome, however, is devoid of such interactions and displays conformations reflective of abnormal inter-subunit movements. The erroneous motions of the pseudouridine-free ribosome may explain its observed deficiencies in translation. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
履歴 |
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構造の表示
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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ダウンロード
PDBx/mmCIF形式 | ![]() | 4.3 MB | 表示 | ![]() |
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PDB形式 | ![]() | 表示 | ![]() | |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
関連構造データ | ![]() 23934MC ![]() 7mpjC ![]() 7n8bC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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リンク
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集合体
登録構造単位 | ![]()
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1 |
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要素
+40S ribosomal protein ... , 32種, 32分子 BABBBCBDBEBFBGBHBIBJBKBLBMBNBOBPBQBRBSBTBUBVBWBXBYBZBaBbBcBdBeBf
-タンパク質 , 2種, 2分子 BgBh
#33: タンパク質 | 分子量: 34151.484 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() |
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#34: タンパク質 | 分子量: 9664.376 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() |
-RNA鎖 , 4種, 4分子 B5A1A3A4
#35: RNA鎖 | 分子量: 574269.875 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() |
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#36: RNA鎖 | 分子量: 1014553.312 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() |
#37: RNA鎖 | 分子量: 38951.105 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() |
#38: RNA鎖 | 分子量: 50682.922 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() |
+60S ribosomal protein ... , 41種, 41分子 AAABACADAEAFAGAHAIAJALAMANAOAPAQARASATAUAVAWAXAYAZAaAbAcAdAe...
-非ポリマー , 2種, 368分子 


#80: 化合物 | ChemComp-MG / #81: 化合物 | |
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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 |
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由来(天然) |
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緩衝液 | pH: 7.5 | ||||||||||||||||||||||||||||||
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||||||||||||
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: FEI TITAN 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: 61 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
ソフトウェア | 名称: PHENIX / バージョン: 1.18.2_3874: / 分類: 精密化 | ||||||||||||||||||||||||
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EMソフトウェア | 名称: PHENIX / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
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: 3.05 Å / 解像度の算出法: OTHER / 粒子像の数: 404065 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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