+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 5wrg | ||||||
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タイトル | SARS-CoV spike glycoprotein | ||||||
要素 | Spike glycoprotein | ||||||
キーワード | VIRUS LIKE PARTICLE / SARS-CoV / Receptor binding / Membrane fusion / VIRAL PROTEIN | ||||||
機能・相同性 | 機能・相同性情報 Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / Attachment and Entry / endocytosis involved in viral entry into host cell / SARS-CoV-1 activates/modulates innate immune responses / suppression by virus of host tetherin activity / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / membrane fusion / positive regulation of viral entry into host cell ...Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / Attachment and Entry / endocytosis involved in viral entry into host cell / SARS-CoV-1 activates/modulates innate immune responses / suppression by virus of host tetherin activity / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / membrane fusion / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / host cell surface receptor binding / symbiont-mediated suppression of host innate immune response / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / host cell plasma membrane / virion membrane / identical protein binding / membrane 類似検索 - 分子機能 | ||||||
生物種 | Human SARS coronavirus (ウイルス) | ||||||
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: 4.3 Å | ||||||
データ登録者 | Gui, M. / Song, W. / Xiang, Y. / Wang, X. | ||||||
引用 | ジャーナル: Cell Res / 年: 2017 タイトル: Cryo-electron microscopy structures of the SARS-CoV spike glycoprotein reveal a prerequisite conformational state for receptor binding. 著者: Miao Gui / Wenfei Song / Haixia Zhou / Jingwei Xu / Silian Chen / Ye Xiang / Xinquan Wang / 要旨: The global outbreak of SARS in 2002-2003 was caused by the infection of a new human coronavirus SARS-CoV. The infection of SARS-CoV is mediated mainly through the viral surface glycoproteins, which ...The global outbreak of SARS in 2002-2003 was caused by the infection of a new human coronavirus SARS-CoV. The infection of SARS-CoV is mediated mainly through the viral surface glycoproteins, which consist of S1 and S2 subunits and form trimer spikes on the envelope of the virions. Here we report the ectodomain structures of the SARS-CoV surface spike trimer in different conformational states determined by single-particle cryo-electron microscopy. The conformation 1 determined at 4.3 Å resolution is three-fold symmetric and has all the three receptor-binding C-terminal domain 1 (CTD1s) of the S1 subunits in "down" positions. The binding of the "down" CTD1s to the SARS-CoV receptor ACE2 is not possible due to steric clashes, suggesting that the conformation 1 represents a receptor-binding inactive state. Conformations 2-4 determined at 7.3, 5.7 and 6.8 Å resolutions are all asymmetric, in which one RBD rotates away from the "down" position by different angles to an "up" position. The "up" CTD1 exposes the receptor-binding site for ACE2 engagement, suggesting that the conformations 2-4 represent a receptor-binding active state. This conformational change is also required for the binding of SARS-CoV neutralizing antibodies targeting the CTD1. This phenomenon could be extended to other betacoronaviruses utilizing CTD1 of the S1 subunit for receptor binding, which provides new insights into the intermediate states of coronavirus pre-fusion spike trimer during infection. | ||||||
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 | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 5wrg.cif.gz | 439.4 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb5wrg.ent.gz | 337.8 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 5wrg.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 5wrg_validation.pdf.gz | 757.5 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 5wrg_full_validation.pdf.gz | 788.9 KB | 表示 | |
XML形式データ | 5wrg_validation.xml.gz | 67.7 KB | 表示 | |
CIF形式データ | 5wrg_validation.cif.gz | 102.7 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/wr/5wrg ftp://data.pdbj.org/pub/pdb/validation_reports/wr/5wrg | HTTPS FTP |
-関連構造データ
-リンク
-集合体
登録構造単位 |
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-要素
#1: タンパク質 | 分子量: 133677.312 Da / 分子数: 3 / 断片: UNP RESIDUES 1-1196 / 由来タイプ: 組換発現 由来: (組換発現) Human SARS coronavirus (ウイルス) 遺伝子: S, 2 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: P59594 Has protein modification | Y | |
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-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 |
-試料調製
構成要素 | 名称: SARS-CoV spike glycoprotein / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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由来(天然) | 生物種: SARS coronavirus (SARS コロナウイルス) |
由来(組換発現) | 生物種: Spodoptera frugiperda (ツマジロクサヨトウ) プラスミド: pFastBac-Dual |
緩衝液 | pH: 7.2 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: ETHANE |
-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: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD |
撮影 | 平均露光時間: 8 sec. / 電子線照射量: 4.7 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
-解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||
対称性 | 点対称性: C3 (3回回転対称) | ||||||||||||||||||||
3次元再構成 | 解像度: 4.3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 34152 / 対称性のタイプ: POINT |