+
データを開く
-
基本情報
| 登録情報 | データベース: PDB / ID: 6acj | ||||||
|---|---|---|---|---|---|---|---|
| タイトル | Trypsin-cleaved and low pH-treated SARS-CoV spike glycoprotein and ACE2 complex, ACE2-bound conformation 2 | ||||||
要素 |
| ||||||
キーワード | VIRAL PROTEIN/HYDROLASE / SARS-CoV / spike / glycoprotein / Class I fusion protein / membrane fusion / VIRAL PROTEIN / VIRAL PROTEIN-HYDROLASE complex | ||||||
| 機能・相同性 | 機能・相同性情報Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / positive regulation of amino acid transport / angiotensin-converting enzyme 2 / positive regulation of L-proline import across plasma membrane / 加水分解酵素; プロテアーゼ; ペプチド結合加水分解酵素; 金属プロテアーゼ / angiotensin-mediated drinking behavior / positive regulation of gap junction assembly / regulation of systemic arterial blood pressure by renin-angiotensin ...Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / positive regulation of amino acid transport / angiotensin-converting enzyme 2 / positive regulation of L-proline import across plasma membrane / 加水分解酵素; プロテアーゼ; ペプチド結合加水分解酵素; 金属プロテアーゼ / angiotensin-mediated drinking behavior / positive regulation of gap junction assembly / regulation of systemic arterial blood pressure by renin-angiotensin / tryptophan transport / regulation of cardiac conduction / maternal process involved in female pregnancy / regulation of vasoconstriction / peptidyl-dipeptidase activity / transporter activator activity / Metabolism of Angiotensinogen to Angiotensins / carboxypeptidase activity / angiotensin maturation / Attachment and Entry / receptor-mediated endocytosis of virus by host cell / metallocarboxypeptidase activity / viral life cycle / positive regulation of cardiac muscle contraction / regulation of cytokine production / blood vessel diameter maintenance / negative regulation of smooth muscle cell proliferation / brush border membrane / negative regulation of ERK1 and ERK2 cascade / positive regulation of reactive oxygen species metabolic process / metallopeptidase activity / SARS-CoV-1 activates/modulates innate immune responses / endocytic vesicle membrane / regulation of cell population proliferation / virus receptor activity / regulation of inflammatory response / endopeptidase activity / viral translation / symbiont-mediated-mediated suppression of host tetherin activity / Potential therapeutics for SARS / Induction of Cell-Cell Fusion / entry receptor-mediated virion attachment to host cell / membrane fusion / Attachment and Entry / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / host cell surface receptor binding / cilium / symbiont-mediated suppression of host innate immune response / apical plasma membrane / membrane raft / endocytosis involved in viral entry into host cell / endoplasmic reticulum lumen / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / symbiont entry into host cell / host cell plasma membrane / virion membrane / cell surface / negative regulation of transcription by RNA polymerase II / extracellular space / extracellular exosome / extracellular region / zinc ion binding / identical protein binding / membrane / plasma membrane 類似検索 - 分子機能 | ||||||
| 生物種 | ![]() Homo sapiens (ヒト) | ||||||
| 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: 4.2 Å | ||||||
データ登録者 | Gui, M. / Song, W. | ||||||
引用 | ジャーナル: PLoS Pathog / 年: 2018タイトル: Cryo-EM structure of the SARS coronavirus spike glycoprotein in complex with its host cell receptor ACE2. 著者: Wenfei Song / Miao Gui / Xinquan Wang / Ye Xiang / ![]() 要旨: The trimeric SARS coronavirus (SARS-CoV) surface spike (S) glycoprotein consisting of three S1-S2 heterodimers binds the cellular receptor angiotensin-converting enzyme 2 (ACE2) and mediates fusion ...The trimeric SARS coronavirus (SARS-CoV) surface spike (S) glycoprotein consisting of three S1-S2 heterodimers binds the cellular receptor angiotensin-converting enzyme 2 (ACE2) and mediates fusion of the viral and cellular membranes through a pre- to postfusion conformation transition. Here, we report the structure of the SARS-CoV S glycoprotein in complex with its host cell receptor ACE2 revealed by cryo-electron microscopy (cryo-EM). The complex structure shows that only one receptor-binding domain of the trimeric S glycoprotein binds ACE2 and adopts a protruding "up" conformation. In addition, we studied the structures of the SARS-CoV S glycoprotein and its complexes with ACE2 in different in vitro conditions, which may mimic different conformational states of the S glycoprotein during virus entry. Disassociation of the S1-ACE2 complex from some of the prefusion spikes was observed and characterized. We also characterized the rosette-like structures of the clustered SARS-CoV S2 trimers in the postfusion state observed on electron micrographs. Structural comparisons suggested that the SARS-CoV S glycoprotein retains a prefusion architecture after trypsin cleavage into the S1 and S2 subunits and acidic pH treatment. However, binding to the receptor opens up the receptor-binding domain of S1, which could promote the release of the S1-ACE2 complex and S1 monomers from the prefusion spike and trigger the pre- to postfusion conformational transition. | ||||||
| 履歴 |
|
-
構造の表示
| ムービー |
ムービービューア |
|---|---|
| 構造ビューア | 分子: Molmil Jmol/JSmol |
-
ダウンロードとリンク
-
ダウンロード
| PDBx/mmCIF形式 | 6acj.cif.gz | 662 KB | 表示 | PDBx/mmCIF形式 |
|---|---|---|---|---|
| PDB形式 | pdb6acj.ent.gz | 539.2 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 6acj.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 | 6acj_validation.pdf.gz | 1008 KB | 表示 | wwPDB検証レポート |
|---|---|---|---|---|
| 文書・詳細版 | 6acj_full_validation.pdf.gz | 1 MB | 表示 | |
| XML形式データ | 6acj_validation.xml.gz | 107.4 KB | 表示 | |
| CIF形式データ | 6acj_validation.cif.gz | 164.9 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/ac/6acj ftp://data.pdbj.org/pub/pdb/validation_reports/ac/6acj | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 9593MC ![]() 9583C ![]() 9584C ![]() 9585C ![]() 9586C ![]() 9587C ![]() 9588C ![]() 9589C ![]() 9591C ![]() 9594C ![]() 9595C ![]() 9596C ![]() 9597C ![]() 9598C ![]() 6accC ![]() 6acdC ![]() 6acgC ![]() 6ackC C: 同じ文献を引用 ( M: このデータのモデリングに利用したマップデータ |
|---|---|
| 類似構造データ |
-
リンク
-
集合体
| 登録構造単位 | ![]()
|
|---|---|
| 1 |
|
-
要素
| #1: タンパク質 | 分子量: 133763.422 Da / 分子数: 3 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 遺伝子: S, 2 発現宿主: ![]() 参照: UniProt: P59594 #2: タンパク質 | | 分子量: 69982.562 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: ACE2, UNQ868/PRO1885発現宿主: ![]() 参照: UniProt: Q9BYF1, angiotensin-converting enzyme 2 Has protein modification | Y | |
|---|
-実験情報
-実験
| 実験 | 手法: 電子顕微鏡法 |
|---|---|
| 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 |
| ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 分子量 | 実験値: NO | ||||||||||||||||||||||||
| 由来(天然) |
| ||||||||||||||||||||||||
| 由来(組換発現) |
| ||||||||||||||||||||||||
| 緩衝液 | pH: 5.8 | ||||||||||||||||||||||||
| 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 |
|---|---|
| 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: 50 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 | 名称: RELION / バージョン: 1.4 / カテゴリ: 3次元再構成 |
|---|---|
| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
| 対称性 | 点対称性: C1 (非対称) |
| 3次元再構成 | 解像度: 4.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 129462 / 対称性のタイプ: POINT |
ムービー
コントローラー
万見について





Homo sapiens (ヒト)
引用
UCSF Chimera
























PDBj





