+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7n1x | ||||||||||||
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タイトル | Structural basis for enhanced infectivity and immune evasion of SARS-CoV-2 variants | ||||||||||||
要素 | Spike glycoprotein | ||||||||||||
キーワード | VIRAL PROTEIN | ||||||||||||
機能・相同性 | 機能・相同性情報 Maturation of spike protein / viral translation / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / suppression by virus of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / entry receptor-mediated virion attachment to host cell ...Maturation of spike protein / viral translation / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / suppression by virus of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / entry receptor-mediated virion attachment to host cell / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / receptor-mediated endocytosis of virus by host cell / membrane fusion / Attachment and Entry / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / receptor ligand activity / 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 / virion attachment to host cell / SARS-CoV-2 activates/modulates innate and adaptive immune responses / host cell plasma membrane / virion membrane / identical protein binding / membrane / plasma membrane 類似検索 - 分子機能 | ||||||||||||
生物種 | Severe acute respiratory syndrome coronavirus 2 (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 Å | ||||||||||||
データ登録者 | Zhang, J. / Cai, Y.F. / Xiao, T.S. / Rawson, S. / Peng, H.Q. / Sterling, S.M. / Walsh Jr, R.M. / Volloch, S.R. / Chen, B. | ||||||||||||
資金援助 | 米国, 3件
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引用 | ジャーナル: Science / 年: 2021 タイトル: Structural basis for enhanced infectivity and immune evasion of SARS-CoV-2 variants. 著者: Yongfei Cai / Jun Zhang / Tianshu Xiao / Christy L Lavine / Shaun Rawson / Hanqin Peng / Haisun Zhu / Krishna Anand / Pei Tong / Avneesh Gautam / Shen Lu / Sarah M Sterling / Richard M Walsh ...著者: Yongfei Cai / Jun Zhang / Tianshu Xiao / Christy L Lavine / Shaun Rawson / Hanqin Peng / Haisun Zhu / Krishna Anand / Pei Tong / Avneesh Gautam / Shen Lu / Sarah M Sterling / Richard M Walsh / Sophia Rits-Volloch / Jianming Lu / Duane R Wesemann / Wei Yang / Michael S Seaman / Bing Chen / 要旨: Several fast-spreading variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have become the dominant circulating strains in the COVID-19 pandemic. We report here cryo-electron ...Several fast-spreading variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have become the dominant circulating strains in the COVID-19 pandemic. We report here cryo-electron microscopy structures of the full-length spike (S) trimers of the B.1.1.7 and B.1.351 variants, as well as their biochemical and antigenic properties. Amino acid substitutions in the B.1.1.7 protein increase both the accessibility of its receptor binding domain and the binding affinity for receptor angiotensin-converting enzyme 2 (ACE2). The enhanced receptor engagement may account for the increased transmissibility. The B.1.351 variant has evolved to reshape antigenic surfaces of the major neutralizing sites on the S protein, making it resistant to some potent neutralizing antibodies. These findings provide structural details on how SARS-CoV-2 has evolved to enhance viral fitness and immune evasion. | ||||||||||||
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 | 7n1x.cif.gz | 610.7 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7n1x.ent.gz | 495.2 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7n1x.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 | 7n1x_validation.pdf.gz | 3.5 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7n1x_full_validation.pdf.gz | 3.5 MB | 表示 | |
XML形式データ | 7n1x_validation.xml.gz | 84.2 KB | 表示 | |
CIF形式データ | 7n1x_validation.cif.gz | 130.5 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/n1/7n1x ftp://data.pdbj.org/pub/pdb/validation_reports/n1/7n1x | 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: 144368.500 Da / 分子数: 3 / 由来タイプ: 組換発現 由来: (組換発現) Severe acute respiratory syndrome coronavirus 2 (ウイルス) 遺伝子: S, 2 / Variant: B.1.1.7 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P0DTC2 #2: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose #3: 多糖 | #4: 多糖 | alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose #5: 糖 | ChemComp-NAG / 研究の焦点であるリガンドがあるか | Y | 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: one RBD-up-3 of pre-fusion SARS-CoV-2 B.1.1.7 spike variant glycoprotein タイプ: COMPLEX 詳細: one RBD-up-3 of pre-fusion SARS-CoV-2 B.1.1.7 spike variant glycoprotein Entity ID: #1 / 由来: RECOMBINANT | ||||||||||||||||||||
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分子量 | 値: 440 kDa/nm / 実験値: NO | ||||||||||||||||||||
由来(天然) | 生物種: Severe acute respiratory syndrome coronavirus 2 (ウイルス) | ||||||||||||||||||||
由来(組換発現) | 生物種: Homo sapiens (ヒト) | ||||||||||||||||||||
緩衝液 | pH: 7.5 | ||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 1 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277.15 K |
-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 | 電子線照射量: 53.4 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
-解析
ソフトウェア | 名称: PHENIX / バージョン: 1.19.1_4122: / 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: 2325106 | ||||||||||||||||||||||||
3次元再構成 | 解像度: 4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 13919 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
原子モデル構築 | プロトコル: AB INITIO MODEL | ||||||||||||||||||||||||
原子モデル構築 | PDB-ID: 7KRR PDB chain-ID: A / Accession code: 7KRR / Pdb chain residue range: 14-1211 / Source name: PDB / タイプ: experimental model | ||||||||||||||||||||||||
拘束条件 |
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