+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-22125 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
タイトル | SARS-CoV-2 S 2P trimer complexed with COV57 polyclonal Fabs | |||||||||
マップデータ | Negative-stain EM of SARS-CoV-2 S 2P trimer complexed with polyclonal Fabs from recovered COVID-19 individual, COV57 | |||||||||
試料 |
| |||||||||
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 / membrane fusion / receptor-mediated endocytosis of virus by host cell / 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) / Homo sapiens (ヒト) | |||||||||
手法 | 単粒子再構成法 / ネガティブ染色法 / 解像度: 21.0 Å | |||||||||
データ登録者 | Barnes CO / Bjorkman PJ | |||||||||
資金援助 | 米国, 1件
| |||||||||
引用 | ジャーナル: Cell / 年: 2020 タイトル: Structures of Human Antibodies Bound to SARS-CoV-2 Spike Reveal Common Epitopes and Recurrent Features of Antibodies. 著者: Christopher O Barnes / Anthony P West / Kathryn E Huey-Tubman / Magnus A G Hoffmann / Naima G Sharaf / Pauline R Hoffman / Nicholas Koranda / Harry B Gristick / Christian Gaebler / Frauke ...著者: Christopher O Barnes / Anthony P West / Kathryn E Huey-Tubman / Magnus A G Hoffmann / Naima G Sharaf / Pauline R Hoffman / Nicholas Koranda / Harry B Gristick / Christian Gaebler / Frauke Muecksch / Julio C Cetrulo Lorenzi / Shlomo Finkin / Thomas Hägglöf / Arlene Hurley / Katrina G Millard / Yiska Weisblum / Fabian Schmidt / Theodora Hatziioannou / Paul D Bieniasz / Marina Caskey / Davide F Robbiani / Michel C Nussenzweig / Pamela J Bjorkman / 要旨: Neutralizing antibody responses to coronaviruses mainly target the receptor-binding domain (RBD) of the trimeric spike. Here, we characterized polyclonal immunoglobulin Gs (IgGs) and Fabs from COVID- ...Neutralizing antibody responses to coronaviruses mainly target the receptor-binding domain (RBD) of the trimeric spike. Here, we characterized polyclonal immunoglobulin Gs (IgGs) and Fabs from COVID-19 convalescent individuals for recognition of coronavirus spikes. Plasma IgGs differed in their focus on RBD epitopes, recognition of alpha- and beta-coronaviruses, and contributions of avidity to increased binding/neutralization of IgGs over Fabs. Using electron microscopy, we examined specificities of polyclonal plasma Fabs, revealing recognition of both S1 and RBD epitopes on SARS-CoV-2 spike. Moreover, a 3.4 Å cryo-electron microscopy (cryo-EM) structure of a neutralizing monoclonal Fab-spike complex revealed an epitope that blocks ACE2 receptor binding. Modeling based on these structures suggested different potentials for inter-spike crosslinking by IgGs on viruses, and characterized IgGs would not be affected by identified SARS-CoV-2 spike mutations. Overall, our studies structurally define a recurrent anti-SARS-CoV-2 antibody class derived from VH3-53/VH3-66 and similarity to a SARS-CoV VH3-30 antibody, providing criteria for evaluating vaccine-elicited antibodies. | |||||||||
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 | 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_22125.map.gz | 31.5 MB | EMDBマップデータ形式 | |
---|---|---|---|---|
ヘッダ (付随情報) | emd-22125-v30.xml emd-22125.xml | 12 KB 12 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_22125.png | 18.5 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-22125 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-22125 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_22125_validation.pdf.gz | 78.7 KB | 表示 | EMDB検証レポート |
---|---|---|---|---|
文書・詳細版 | emd_22125_full_validation.pdf.gz | 77.9 KB | 表示 | |
XML形式データ | emd_22125_validation.xml.gz | 494 B | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-22125 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-22125 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
---|---|
「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_22125.map.gz / 形式: CCP4 / 大きさ: 64 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
注釈 | Negative-stain EM of SARS-CoV-2 S 2P trimer complexed with polyclonal Fabs from recovered COVID-19 individual, COV57 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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: 1.7 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
|
-添付データ
-試料の構成要素
-全体 : SARS-CoV-2 S 2P trimer complexed with polyclonal Fabs from COV57 ...
全体 | 名称: SARS-CoV-2 S 2P trimer complexed with polyclonal Fabs from COV57 individual |
---|---|
要素 |
|
-超分子 #1: SARS-CoV-2 S 2P trimer complexed with polyclonal Fabs from COV57 ...
超分子 | 名称: SARS-CoV-2 S 2P trimer complexed with polyclonal Fabs from COV57 individual タイプ: complex / ID: 1 / 親要素: 0 |
---|---|
分子量 | 実験値: 600 KDa |
-超分子 #2: SARS-CoV-2 spike glycoprotein 2P trimer
超分子 | 名称: SARS-CoV-2 spike glycoprotein 2P trimer / タイプ: complex / ID: 2 / 親要素: 1 |
---|---|
由来(天然) | 生物種: Severe acute respiratory syndrome coronavirus 2 (ウイルス) |
組換発現 | 生物種: Homo sapiens (ヒト) / 組換細胞: Expi293F / 組換プラスミド: pCAGGS |
分子量 | 実験値: 585 KDa |
-超分子 #3: COV57 polyclonal Fab fragment
超分子 | 名称: COV57 polyclonal Fab fragment / タイプ: complex / ID: 3 / 親要素: 1 詳細: COV57 polyclonal Fab fragments were generated by proteolytic cleavage of plasma-purified IgG antibodies. |
---|---|
由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 実験値: 50 KDa |
-実験情報
-構造解析
手法 | ネガティブ染色法 |
---|---|
解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
濃度 | 0.05 mg/mL |
---|---|
緩衝液 | pH: 8 |
染色 | タイプ: NEGATIVE / 材質: Uranyl Formate / 詳細: 1% uranyl formate staining |
グリッド | 詳細: unspecified |
詳細 | Monodisperse sample taken after size-exclusion chromatography |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
---|---|
撮影 | フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 平均露光時間: 2.0 sec. / 平均電子線量: 12.0 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: Titan Krios / 画像提供: FEI Company |