+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-10763 | |||||||||
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タイトル | Mammalian late-stage translation initiation complex with beta-globin mRNA in presence of ATP | |||||||||
マップデータ | ||||||||||
試料 |
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機能・相同性 | 機能・相同性情報 eukaryotic translation initiation factor 2 complex / ribosomal subunit / eukaryotic 48S preinitiation complex / laminin receptor activity / mammalian oogenesis stage / activation-induced cell death of T cells / positive regulation of signal transduction by p53 class mediator / ubiquitin ligase inhibitor activity / phagocytic cup / ribosomal small subunit binding ...eukaryotic translation initiation factor 2 complex / ribosomal subunit / eukaryotic 48S preinitiation complex / laminin receptor activity / mammalian oogenesis stage / activation-induced cell death of T cells / positive regulation of signal transduction by p53 class mediator / ubiquitin ligase inhibitor activity / phagocytic cup / ribosomal small subunit binding / 90S preribosome / TOR signaling / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / T cell proliferation involved in immune response / regulation of translational fidelity / erythrocyte development / ribosomal subunit export from nucleus / ribosomal small subunit export from nucleus / translation regulator activity / translational termination / laminin binding / rough endoplasmic reticulum / 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) / gastrulation / MDM2/MDM4 family protein binding / cytosolic ribosome / translation initiation factor activity / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / class I DNA-(apurinic or apyrimidinic site) endonuclease activity / DNA-(apurinic or apyrimidinic site) lyase / rescue of stalled ribosome / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA / cellular response to leukemia inhibitory factor / small-subunit processome / translational initiation / protein kinase C binding / positive regulation of apoptotic signaling pathway / positive regulation of protein-containing complex assembly / placenta development / spindle / cytoplasmic ribonucleoprotein granule / modification-dependent protein catabolic process / cytoplasmic stress granule / G1/S transition of mitotic cell cycle / protein tag activity / rRNA processing / ribosomal small subunit biogenesis / rhythmic process / positive regulation of canonical Wnt signaling pathway / small ribosomal subunit rRNA binding / ribosome binding / glucose homeostasis / regulation of translation / ribosomal small subunit assembly / virus receptor activity / small ribosomal subunit / T cell differentiation in thymus / cytosolic small ribosomal subunit / cell body / cytoplasmic translation / perikaryon / cytosolic large ribosomal subunit / mitochondrial inner membrane / postsynaptic density / cell differentiation / rRNA binding / ribosome / protein ubiquitination / structural constituent of ribosome / positive regulation of apoptotic process / iron ion binding / positive regulation of protein phosphorylation / ribonucleoprotein complex / translation / cell division / DNA repair / mRNA binding / centrosome / dendrite / ubiquitin protein ligase binding / positive regulation of cell population proliferation / synapse / negative regulation of apoptotic process / nucleolus / apoptotic process / protein kinase binding / perinuclear region of cytoplasm / Golgi apparatus / endoplasmic reticulum / ATP hydrolysis activity / DNA binding / RNA binding / zinc ion binding / ATP binding / membrane / nucleus / metal ion binding / plasma membrane / cytosol 類似検索 - 分子機能 | |||||||||
生物種 | Oryctolagus cuniculus (ウサギ) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 9.6 Å | |||||||||
データ登録者 | Simonetti A / Guca E / Hashem Y | |||||||||
資金援助 | European Union, フランス, 2件
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引用 | ジャーナル: Cell Rep / 年: 2020 タイトル: Structural Insights into the Mammalian Late-Stage Initiation Complexes. 著者: Angelita Simonetti / Ewelina Guca / Anthony Bochler / Lauriane Kuhn / Yaser Hashem / 要旨: In higher eukaryotes, the mRNA sequence in the direct vicinity of the start codon, called the Kozak sequence (CRCCaugG, where R is a purine), is known to influence the rate of the initiation process. ...In higher eukaryotes, the mRNA sequence in the direct vicinity of the start codon, called the Kozak sequence (CRCCaugG, where R is a purine), is known to influence the rate of the initiation process. However, the molecular basis underlying its role remains poorly understood. Here, we present the cryoelectron microscopy (cryo-EM) structures of mammalian late-stage 48S initiation complexes (LS48S ICs) in the presence of two different native mRNA sequences, β-globin and histone 4, at overall resolution of 3 and 3.5 Å, respectively. Our high-resolution structures unravel key interactions from the mRNA to eukaryotic initiation factors (eIFs): 1A, 2, 3, 18S rRNA, and several 40S ribosomal proteins. In addition, we are able to study the structural role of ABCE1 in the formation of native 48S ICs. Our results reveal a comprehensive map of ribosome/eIF-mRNA and ribosome/eIF-tRNA interactions and suggest the impact of mRNA sequence on the structure of the LS48S IC. | |||||||||
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_10763.map.gz | 7.8 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-10763-v30.xml emd-10763.xml | 7.7 KB 7.7 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_10763.png | 105.3 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-10763 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-10763 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_10763_validation.pdf.gz | 241.6 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_10763_full_validation.pdf.gz | 240.7 KB | 表示 | |
XML形式データ | emd_10763_validation.xml.gz | 5.4 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-10763 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-10763 | 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_10763.map.gz / 形式: CCP4 / 大きさ: 8.4 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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: 3.63 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 : LS48S IC + ATP with beta-globin mRNA
全体 | 名称: LS48S IC + ATP with beta-globin mRNA |
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要素 |
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-超分子 #1: LS48S IC + ATP with beta-globin mRNA
超分子 | 名称: LS48S IC + ATP with beta-globin mRNA / タイプ: complex / ID: 1 / 親要素: 0 |
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由来(天然) | 生物種: Oryctolagus cuniculus (ウサギ) |
-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 |
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凍結 | 凍結剤: ETHANE |
-電子顕微鏡法
顕微鏡 | FEI POLARA 300 |
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撮影 | フィルム・検出器のモデル: FEI FALCON I (4k x 4k) 平均電子線量: 26.0 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 |
実験機器 | モデル: Tecnai Polara / 画像提供: FEI Company |
-画像解析
最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 9.6 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用した粒子像数: 200000 |
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初期 角度割当 | タイプ: NOT APPLICABLE |
最終 角度割当 | タイプ: NOT APPLICABLE |