+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-3227 | |||||||||
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タイトル | Cryo-EM map of a native 80S-ribosome-eIF-5A complex | |||||||||
マップデータ | Ribosome reconstruction | |||||||||
試料 |
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キーワード | Translation | |||||||||
機能・相同性 | 機能・相同性情報 positive regulation of cytoplasmic translational elongation through polyproline stretches / Hypusine synthesis from eIF5A-lysine / CAT tailing / translational frameshifting / positive regulation of translational termination / positive regulation of translational elongation / hexon binding / pre-mRNA 5'-splice site binding / cleavage in ITS2 between 5.8S rRNA and LSU-rRNA of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / response to cycloheximide ...positive regulation of cytoplasmic translational elongation through polyproline stretches / Hypusine synthesis from eIF5A-lysine / CAT tailing / translational frameshifting / positive regulation of translational termination / positive regulation of translational elongation / hexon binding / pre-mRNA 5'-splice site binding / cleavage in ITS2 between 5.8S rRNA and LSU-rRNA of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / response to cycloheximide / 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 / negative regulation of mRNA splicing, via spliceosome / preribosome, large subunit precursor / L13a-mediated translational silencing of Ceruloplasmin expression / translational elongation / ribosomal large subunit export from nucleus / regulation of translational fidelity / protein-RNA complex assembly / positive regulation of translational initiation / translation elongation factor activity / translational termination / maturation of LSU-rRNA / translation initiation factor activity / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / rescue of stalled ribosome / ribosomal large subunit biogenesis / translational initiation / macroautophagy / maintenance of translational fidelity / modification-dependent protein catabolic process / protein tag activity / rRNA processing / ribosome biogenesis / viral capsid / ribosome binding / 5S rRNA binding / large ribosomal subunit rRNA binding / ribosomal large subunit assembly / cytoplasmic translation / cytosolic large ribosomal subunit / negative regulation of translation / rRNA binding / ribosome / protein ubiquitination / structural constituent of ribosome / translation / response to antibiotic / mRNA binding / ubiquitin protein ligase binding / host cell nucleus / nucleolus / perinuclear region of cytoplasm / mitochondrion / RNA binding / 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: 3.88 Å | |||||||||
データ登録者 | Schmidt C / Becker T / Heuer A / Braunger K / Shanmuganathan V / Pech M / m Berninghausen O / Wilson D / Beckmann R | |||||||||
引用 | ジャーナル: Nucleic Acids Res / 年: 2016 タイトル: Structure of the hypusinylated eukaryotic translation factor eIF-5A bound to the ribosome. 著者: Christian Schmidt / Thomas Becker / André Heuer / Katharina Braunger / Vivekanandan Shanmuganathan / Markus Pech / Otto Berninghausen / Daniel N Wilson / Roland Beckmann / 要旨: During protein synthesis, ribosomes become stalled on polyproline-containing sequences, unless they are rescued in archaea and eukaryotes by the initiation factor 5A (a/eIF-5A) and in bacteria by the ...During protein synthesis, ribosomes become stalled on polyproline-containing sequences, unless they are rescued in archaea and eukaryotes by the initiation factor 5A (a/eIF-5A) and in bacteria by the homologous protein EF-P. While a structure of EF-P bound to the 70S ribosome exists, structural insight into eIF-5A on the 80S ribosome has been lacking. Here we present a cryo-electron microscopy reconstruction of eIF-5A bound to the yeast 80S ribosome at 3.9 Å resolution. The structure reveals that the unique and functionally essential post-translational hypusine modification reaches toward the peptidyltransferase center of the ribosome, where the hypusine moiety contacts A76 of the CCA-end of the P-site tRNA. These findings would support a model whereby eIF-5A stimulates peptide bond formation on polyproline-stalled ribosomes by stabilizing and orienting the CCA-end of the P-tRNA, rather than by directly contributing to the catalysis. | |||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | EMマップ: SurfViewMolmilJmol/JSmol |
添付画像 |
-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_3227.map.gz | 179.3 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-3227-v30.xml emd-3227.xml | 9.9 KB 9.9 KB | 表示 表示 | EMDBヘッダ |
画像 | EMD_3227.jpg | 160.5 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-3227 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-3227 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_3227_validation.pdf.gz | 325.7 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_3227_full_validation.pdf.gz | 324.8 KB | 表示 | |
XML形式データ | emd_3227_validation.xml.gz | 6.8 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-3227 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-3227 | 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_3227.map.gz / 形式: CCP4 / 大きさ: 188.7 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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注釈 | Ribosome reconstruction | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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: 1.084 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
-試料の構成要素
-全体 : Native 80S ribosome-eIF-5A complex from yeast
全体 | 名称: Native 80S ribosome-eIF-5A complex from yeast |
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要素 |
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-超分子 #1000: Native 80S ribosome-eIF-5A complex from yeast
超分子 | 名称: Native 80S ribosome-eIF-5A complex from yeast / タイプ: sample / ID: 1000 / 詳細: Sample was obtained from a native pullout / 集合状態: One ribosome binds one eIF-5A molecule / Number unique components: 2 |
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-超分子 #1: Ribosome
超分子 | 名称: Ribosome / タイプ: complex / ID: 1 / 組換発現: No / Ribosome-details: ribosome-eukaryote: ALL |
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由来(天然) | 生物種: Saccharomyces cerevisiae (パン酵母) / 別称: Baker's Yeast / 細胞中の位置: Cytoplasm |
-分子 #1: eIF-5A
分子 | 名称: eIF-5A / タイプ: protein_or_peptide / ID: 1 / コピー数: 1 / 集合状態: monomer / 組換発現: No |
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由来(天然) | 生物種: Saccharomyces cerevisiae (パン酵母) |
分子量 | 理論値: 170 KDa |
配列 | UniProtKB: Eukaryotic translation initiation factor 5A-1 |
-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: 7.4 詳細: 20 mM HEPES, pH7.4, 100 mM KOAc, 10 mM MgCl2, 0.01 mg/ml Cycloheximide |
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グリッド | 詳細: Quantifoil R3/3 grids with 2 nM carbon on top |
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 100 % / 装置: FEI VITROBOT MARK IV |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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日付 | 2015年2月25日 |
撮影 | カテゴリ: CCD フィルム・検出器のモデル: FEI FALCON II (4k x 4k) 実像数: 3786 詳細: The data was provided with the semi-automated software EPU (FEI Company) with a dose of 2.4 electrons per frame for 13 frames in total. The frames were aligned with the Motion Correction software ビット/ピクセル: 16 |
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 / Cs: 2.7 mm / 最大 デフォーカス(公称値): 3.4 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 |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
-画像解析
詳細 | Computational sorting and classification was done in SPIDER, movie processing and high resolution refinement was done with RELION |
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CTF補正 | 詳細: Each Particle |
最終 再構成 | 想定した対称性 - 点群: C1 (非対称) / アルゴリズム: OTHER / 解像度のタイプ: BY AUTHOR / 解像度: 3.88 Å / 解像度の算出法: OTHER ソフトウェア - 名称: SIGNATURE, CTFFIND3, SPIDER, RELION 使用した粒子像数: 62532 |