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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: EMDB / ID: EMD-4794 | |||||||||
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タイトル | Yeast pre-40S Rps20 DeltaLoop C1-Headonly | |||||||||
![]() | C1-headonly S20Delta loop yeast pre-40S particle Structural state 1 3D reconstruction of the head only(signal subtraction of the body) Local sharpening with LocScale | |||||||||
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機能・相同性 | ![]() positive regulation of RNA import into nucleus / 18S rRNA (adenine1779-N6/adenine1780-N6)-dimethyltransferase / 18S rRNA (adenine(1779)-N(6)/adenine(1780)-N(6))-dimethyltransferase activity / rRNA modification / rRNA (adenine-N6,N6-)-dimethyltransferase activity / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / endonucleolytic cleavage to generate mature 5'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / rRNA primary transcript binding / Negative regulators of DDX58/IFIH1 signaling ...positive regulation of RNA import into nucleus / 18S rRNA (adenine1779-N6/adenine1780-N6)-dimethyltransferase / 18S rRNA (adenine(1779)-N(6)/adenine(1780)-N(6))-dimethyltransferase activity / rRNA modification / rRNA (adenine-N6,N6-)-dimethyltransferase activity / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / endonucleolytic cleavage to generate mature 5'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, LSU-rRNA,5S) / rRNA primary transcript binding / 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 / rRNA methylation / Protein hydroxylation / ribosome-associated ubiquitin-dependent protein catabolic process / GDP-dissociation inhibitor activity / U3 snoRNA binding / positive regulation of nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / poly(A)+ mRNA export from nucleus / Formation of the ternary complex, and subsequently, the 43S complex / Translation initiation complex formation / Ribosomal scanning and start codon recognition / snoRNA binding / preribosome, small subunit precursor / nonfunctional rRNA decay / 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 / 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 translational frameshifting / Formation of a pool of free 40S subunits / positive regulation of protein kinase activity / 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) / G-protein alpha-subunit binding / 90S preribosome / Ub-specific processing proteases / proteasome assembly / ribosomal subunit export from nucleus / regulation of translational fidelity / ribonucleoprotein complex binding / 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) / ribosomal small subunit export from nucleus / translation regulator activity / DNA-(apurinic or apyrimidinic site) endonuclease activity / rescue of stalled ribosome / protein kinase C binding / cellular response to amino acid starvation / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosome assembly / maturation of SSU-rRNA / small-subunit processome / translational initiation / modification-dependent protein catabolic process / protein tag activity / maintenance of translational fidelity / cytoplasmic stress granule / rRNA processing / unfolded protein binding / ribosome biogenesis / ribosome binding / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / cytoplasmic translation / non-specific serine/threonine protein kinase / protein ubiquitination / protein kinase activity / negative regulation of translation / rRNA binding / structural constituent of ribosome / ribosome / translation / G protein-coupled receptor signaling pathway / negative regulation of gene expression / protein serine kinase activity / mRNA binding / GTPase activity / protein serine/threonine kinase activity / ubiquitin protein ligase binding / GTP binding / nucleolus / mitochondrion / RNA binding / zinc ion binding / nucleoplasm / ATP binding / metal ion binding / nucleus / cytosol / cytoplasm 類似検索 - 分子機能 | |||||||||
生物種 | ![]() ![]() | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.8 Å | |||||||||
![]() | Shayan R / Mitterer V / Ferreira-Cerca S / Murat G / Rinaldi D / Enne T / Weigl S / Omanic H / Gleizes PE / Kressler D ...Shayan R / Mitterer V / Ferreira-Cerca S / Murat G / Rinaldi D / Enne T / Weigl S / Omanic H / Gleizes PE / Kressler D / Pertschy B / Plisson-Chastang C | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Conformational proofreading of distant 40S ribosomal subunit maturation events by a long-range communication mechanism. 著者: Valentin Mitterer / Ramtin Shayan / Sébastien Ferreira-Cerca / Guillaume Murat / Tanja Enne / Dana Rinaldi / Sarah Weigl / Hajrija Omanic / Pierre-Emmanuel Gleizes / Dieter Kressler / Celia ...著者: Valentin Mitterer / Ramtin Shayan / Sébastien Ferreira-Cerca / Guillaume Murat / Tanja Enne / Dana Rinaldi / Sarah Weigl / Hajrija Omanic / Pierre-Emmanuel Gleizes / Dieter Kressler / Celia Plisson-Chastang / Brigitte Pertschy / ![]() ![]() ![]() ![]() 要旨: Eukaryotic ribosomes are synthesized in a hierarchical process driven by a plethora of assembly factors, but how maturation events at physically distant sites on pre-ribosomes are coordinated is ...Eukaryotic ribosomes are synthesized in a hierarchical process driven by a plethora of assembly factors, but how maturation events at physically distant sites on pre-ribosomes are coordinated is poorly understood. Using functional analyses and cryo-EM, we show that ribosomal protein Rps20 orchestrates communication between two multi-step maturation events across the pre-40S subunit. Our study reveals that during pre-40S maturation, formation of essential contacts between Rps20 and Rps3 permits assembly factor Ltv1 to recruit the Hrr25 kinase, thereby promoting Ltv1 phosphorylation. In parallel, a deeply buried Rps20 loop reaches to the opposite pre-40S side, where it stimulates Rio2 ATPase activity. Both cascades converge to the final maturation steps releasing Rio2 and phosphorylated Ltv1. We propose that conformational proofreading exerted via Rps20 constitutes a checkpoint permitting assembly factor release and progression of pre-40S maturation only after completion of all earlier maturation steps. | |||||||||
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 | EMマップ: ![]() ![]() ![]() |
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マップデータ | ![]() | 9.8 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 23.9 KB 23.9 KB | 表示 表示 | ![]() |
FSC (解像度算出) | ![]() | 13.6 KB | 表示 | ![]() |
画像 | ![]() | 161.8 KB | ||
その他 | ![]() ![]() | 171.4 MB 171.5 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 358.3 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 357.4 KB | 表示 | |
XML形式データ | ![]() | 19.5 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
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リンク
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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注釈 | C1-headonly S20Delta loop yeast pre-40S particle Structural state 1 3D reconstruction of the head only(signal subtraction of the body) Local sharpening with LocScale | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.067 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
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試料の構成要素
-全体 : C1-S20DeltaLoop State 1 of yeast pre-40S particles purified with ...
全体 | 名称: C1-S20DeltaLoop State 1 of yeast pre-40S particles purified with Tsr1-TAP as bait, in mutant conditions (deletion of aa 68-78 of Rps20) 3D reconstruction of the pre-40S head only (signal ...名称: C1-S20DeltaLoop State 1 of yeast pre-40S particles purified with Tsr1-TAP as bait, in mutant conditions (deletion of aa 68-78 of Rps20) 3D reconstruction of the pre-40S head only (signal subtraction of the body domain) |
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要素 |
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-超分子 #1: C1-S20DeltaLoop State 1 of yeast pre-40S particles purified with ...
超分子 | 名称: C1-S20DeltaLoop State 1 of yeast pre-40S particles purified with Tsr1-TAP as bait, in mutant conditions (deletion of aa 68-78 of Rps20) 3D reconstruction of the pre-40S head only (signal ...名称: C1-S20DeltaLoop State 1 of yeast pre-40S particles purified with Tsr1-TAP as bait, in mutant conditions (deletion of aa 68-78 of Rps20) 3D reconstruction of the pre-40S head only (signal subtraction of the body domain) タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#35 |
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由来(天然) | 生物種: ![]() ![]() |
分子量 | 理論値: 1.2 MDa |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
緩衝液 | pH: 7.5 |
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グリッド | モデル: Quantifoil R2/1 / 支持フィルム - 材質: CARBON / 支持フィルム - トポロジー: CONTINUOUS / 支持フィルム - Film thickness: 2.0 nm / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 雰囲気: AIR / 前処理 - 気圧: 0.045 kPa / 詳細: 25 mA |
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 95 % / チャンバー内温度: 293 K / 装置: LEICA EM GP / 詳細: blot 1.7-1.9 seconds before plunging. |
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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) 検出モード: COUNTING / デジタル化 - 画像ごとのフレーム数: 1-25 / 撮影したグリッド数: 1 / 実像数: 6480 / 平均電子線量: 32.4 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / Cs: 2.7 mm / 最大 デフォーカス(公称値): 3.0 µm / 最小 デフォーカス(公称値): 0.8 µm |
試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER ホルダー冷却材: NITROGEN |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |