+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-16470 | ||||||||||||||||||
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タイトル | Cryo-EM structure of in vitro reconstituted Otu2-bound Ub-40S complex - body 1 | ||||||||||||||||||
マップデータ | Cryo-EM map of in vitro reconstituted Otu2-Ub-40S complex - body 1 | ||||||||||||||||||
試料 |
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キーワード | 40S / Ubiquitin / Deubiquitinating enzyme / Otu2 / Rps7 / RIBOSOME | ||||||||||||||||||
機能・相同性 | 機能・相同性情報 maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / RMTs methylate histone arginines / positive regulation of translational fidelity / Protein methylation / mTORC1-mediated signalling / Protein hydroxylation / Formation of the ternary complex, and subsequently, the 43S complex / Translation initiation complex formation / Ribosomal scanning and start codon recognition / Major pathway of rRNA processing in the nucleolus and cytosol ...maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / RMTs methylate histone arginines / positive regulation of translational fidelity / Protein methylation / mTORC1-mediated signalling / Protein hydroxylation / Formation of the ternary complex, and subsequently, the 43S complex / Translation initiation complex formation / Ribosomal scanning and start codon recognition / Major pathway of rRNA processing in the nucleolus and cytosol / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / Formation of a pool of free 40S subunits / L13a-mediated translational silencing of Ceruloplasmin expression / protein deubiquitination / 90S preribosome / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / regulation of translational fidelity / ribosomal subunit export from nucleus / 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) / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / small-subunit processome / maintenance of translational fidelity / modification-dependent protein catabolic process / cytoplasmic stress granule / protein tag activity / rRNA processing / ribosomal small subunit biogenesis / small ribosomal subunit rRNA binding / ribosome biogenesis / ribosomal small subunit assembly / cytosolic small ribosomal subunit / cytoplasmic translation / cysteine-type deubiquitinase activity / rRNA binding / ribosome / protein ubiquitination / structural constituent of ribosome / translation / ubiquitin protein ligase binding / nucleolus / mitochondrion / RNA binding / nucleoplasm / nucleus / metal ion binding / cytosol / cytoplasm 類似検索 - 分子機能 | ||||||||||||||||||
生物種 | Saccharomyces cerevisiae (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: 3.0 Å | ||||||||||||||||||
データ登録者 | Ikeuchi K / Buschauer R / Cheng J / Berninghausen O / Becker T / Beckmann R | ||||||||||||||||||
資金援助 | ドイツ, 日本, 5件
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引用 | ジャーナル: Nat Commun / 年: 2023 タイトル: Molecular basis for recognition and deubiquitination of 40S ribosomes by Otu2. 著者: Ken Ikeuchi / Nives Ivic / Robert Buschauer / Jingdong Cheng / Thomas Fröhlich / Yoshitaka Matsuo / Otto Berninghausen / Toshifumi Inada / Thomas Becker / Roland Beckmann / 要旨: In actively translating 80S ribosomes the ribosomal protein eS7 of the 40S subunit is monoubiquitinated by the E3 ligase Not4 and deubiquitinated by Otu2 upon ribosomal subunit recycling. Despite its ...In actively translating 80S ribosomes the ribosomal protein eS7 of the 40S subunit is monoubiquitinated by the E3 ligase Not4 and deubiquitinated by Otu2 upon ribosomal subunit recycling. Despite its importance for translation efficiency the exact role and structural basis for this translational reset is poorly understood. Here, structural analysis by cryo-electron microscopy of native and reconstituted Otu2-bound ribosomal complexes reveals that Otu2 engages 40S subunits mainly between ribosome recycling and initiation stages. Otu2 binds to several sites on the intersubunit surface of the 40S that are not occupied by any other 40S-binding factors. This binding mode explains the discrimination against 80S ribosomes via the largely helical N-terminal domain of Otu2 as well as the specificity for mono-ubiquitinated eS7 on 40S. Collectively, this study reveals mechanistic insights into the Otu2-driven deubiquitination steps for translational reset during ribosome recycling/(re)initiation. | ||||||||||||||||||
履歴 |
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-構造の表示
添付画像 |
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-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_16470.map.gz | 106.5 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-16470-v30.xml emd-16470.xml | 36.8 KB 36.8 KB | 表示 表示 | EMDBヘッダ |
FSC (解像度算出) | emd_16470_fsc.xml | 12.7 KB | 表示 | FSCデータファイル |
画像 | emd_16470.png | 80 KB | ||
Filedesc metadata | emd-16470.cif.gz | 9.1 KB | ||
その他 | emd_16470_half_map_1.map.gz emd_16470_half_map_2.map.gz | 122 MB 122 MB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-16470 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-16470 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_16470_validation.pdf.gz | 903.1 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_16470_full_validation.pdf.gz | 902.7 KB | 表示 | |
XML形式データ | emd_16470_validation.xml.gz | 20.5 KB | 表示 | |
CIF形式データ | emd_16470_validation.cif.gz | 26.9 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-16470 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-16470 | 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_16470.map.gz / 形式: CCP4 / 大きさ: 178 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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注釈 | Cryo-EM map of in vitro reconstituted Otu2-Ub-40S complex - body 1 | ||||||||||||||||||||||||||||||||||||
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: 1.059 Å | ||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
-ハーフマップ: Half map A
ファイル | emd_16470_half_map_1.map | ||||||||||||
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注釈 | Half map A | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: Half map B
ファイル | emd_16470_half_map_2.map | ||||||||||||
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注釈 | Half map B | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-試料の構成要素
+全体 : in vitro reconstituted yeast 40S ribosome complex with deubiquiti...
+超分子 #1: in vitro reconstituted yeast 40S ribosome complex with deubiquiti...
+超分子 #2: OTU domain-containing protein 2; Ubiquitin
+超分子 #3: yeast 40S ribosome complex
+分子 #1: OTU domain-containing protein 2
+分子 #2: Ubiquitin
+分子 #4: 40S ribosomal protein S0-A
+分子 #5: 40S ribosomal protein S2
+分子 #6: 40S ribosomal protein S4-A
+分子 #7: 40S ribosomal protein S6-A
+分子 #8: 40S ribosomal protein S7-A
+分子 #9: 40S ribosomal protein S8-B
+分子 #10: 40S ribosomal protein S9-A
+分子 #11: 40S ribosomal protein S11-A
+分子 #12: 40S ribosomal protein S13
+分子 #13: 40S ribosomal protein S21-A
+分子 #14: 40S ribosomal protein S22-A
+分子 #15: 40S ribosomal protein S23-A
+分子 #16: 40S ribosomal protein S24-A
+分子 #17: 40S ribosomal protein S27-A
+分子 #18: 40S ribosomal protein S30-A
+分子 #3: 18S ribosomal RNA
-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
緩衝液 | pH: 7.5 |
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凍結 | 凍結剤: ETHANE |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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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: 46.0 e/Å2 |
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 FIELD / 最大 デフォーカス(公称値): 4.0 µm / 最小 デフォーカス(公称値): 0.5 µm |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |