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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: 6rbe | ||||||
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タイトル | State 2 of yeast Tsr1-TAP Rps20-Deltaloop pre-40S particles | ||||||
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![]() | RIBOSOME / pre-40S / yeast / cytoplasmic / mutant Rps20 | ||||||
機能・相同性 | ![]() 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 ...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 / 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 / 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) / Formation of a pool of free 40S subunits / 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 / positive regulation of protein kinase activity / Ub-specific processing proteases / ribosomal subunit export from nucleus / regulation of translational fidelity / 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 / cellular response to amino acid starvation / 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 / 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 / cytosolic small ribosomal subunit / small ribosomal subunit rRNA binding / 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 / mRNA binding / ubiquitin protein ligase binding / nucleolus / mitochondrion / RNA binding / zinc ion binding / nucleoplasm / nucleus / cytosol / cytoplasm 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: 3.8 Å | ||||||
![]() | Shayan, R. / Mitterer, V. / Ferreira-Cerca, S. / Murat, G. / Enne, T. / Rinaldi, D. / Weigl, S. / Omanic, H. / Gleizes, P.E. / Kressler, D. ...Shayan, R. / Mitterer, V. / Ferreira-Cerca, S. / Murat, G. / Enne, T. / Rinaldi, D. / Weigl, S. / Omanic, H. / Gleizes, P.E. / 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 | 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 | ![]() | 1.6 MB | 表示 | ![]() |
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PDB形式 | ![]() | 1.2 MB | 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
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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 , 1種, 1分子 2
#1: RNA鎖 | 分子量: 579761.938 Da / 分子数: 1 / 由来タイプ: 天然 由来: (天然) ![]() ![]() 参照: GenBank: 1262303 |
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+40S ribosomal protein ... , 30種, 30分子 ABCEGHIJLNORVWXYbdeDFKMPQSTUZc
-タンパク質 , 2種, 2分子 fg
#32: タンパク質 | 分子量: 17254.227 Da / 分子数: 1 / 由来タイプ: 天然 由来: (天然) ![]() ![]() 参照: UniProt: P05759 |
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#33: タンパク質 | 分子量: 34841.219 Da / 分子数: 1 / 由来タイプ: 天然 由来: (天然) ![]() ![]() 参照: UniProt: P38011 |
-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: C2-S20DeltaLoop State 2 of yeast pre-40S particles purified with Tsr1-TAP as bait, in mutant conditions (deletion of aa 68-78 of Rps20) タイプ: RIBOSOME / Entity ID: all / 由来: NATURAL |
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分子量 | 値: 1.2 MDa / 実験値: NO |
由来(天然) | 生物種: ![]() ![]() |
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 |
試料支持 | 詳細: 25 mA, 30sec / グリッドの材料: COPPER / グリッドのタイプ: Quantifoil R2/1 |
急速凍結 | 装置: LEICA EM GP / 凍結剤: ETHANE / 湿度: 95 % / 凍結前の試料温度: 293 K / 詳細: blot 1.7-1.9 seconds before plunging |
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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 / 最大 デフォーカス(公称値): 3000 nm / 最小 デフォーカス(公称値): 800 nm / Cs: 2.7 mm |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 電子線照射量: 32.4 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 撮影したグリッド数: 1 / 実像数: 6480 |
画像スキャン | 動画フレーム数/画像: 25 / 利用したフレーム数/画像: 1-25 |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.12_2829: / 分類: 精密化 | ||||||||||||||||||||||||||||||||||||||||||||||||
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EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 645109 | ||||||||||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.8 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 42901 / アルゴリズム: EXACT BACK PROJECTION / クラス平均像の数: 2 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 |
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精密化 | 最高解像度: 3.8 Å | ||||||||||||||||||||||||||||||||||||||||||||||||
拘束条件 |
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