+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-26608 | |||||||||
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タイトル | Structure of the VP5*/VP8* assembly from the human rotavirus strain CDC-9 in complex with antibody 41 - Upright conformation | |||||||||
マップデータ | Composite map, reconstructed, sharpen_map. | |||||||||
試料 |
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機能・相同性 | 機能・相同性情報 viral intermediate capsid / host cell endoplasmic reticulum lumen / host cell rough endoplasmic reticulum / T=13 icosahedral viral capsid / permeabilization of host organelle membrane involved in viral entry into host cell / host cytoskeleton / viral outer capsid / host cell endoplasmic reticulum-Golgi intermediate compartment / host cell surface receptor binding / fusion of virus membrane with host plasma membrane ...viral intermediate capsid / host cell endoplasmic reticulum lumen / host cell rough endoplasmic reticulum / T=13 icosahedral viral capsid / permeabilization of host organelle membrane involved in viral entry into host cell / host cytoskeleton / viral outer capsid / host cell endoplasmic reticulum-Golgi intermediate compartment / host cell surface receptor binding / fusion of virus membrane with host plasma membrane / viral envelope / virion attachment to host cell / host cell plasma membrane / structural molecule activity / membrane / metal ion binding 類似検索 - 分子機能 | |||||||||
生物種 | Homo sapiens (ヒト) / Rotavirus (ウイルス) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.5 Å | |||||||||
データ登録者 | Jenni S / Zongli L / Wang Y / Bessey T / Salgado EN / Schmidt AG / Greenberg HB / Jiang B / Harrison SC | |||||||||
資金援助 | 米国, 1件
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引用 | ジャーナル: J Virol / 年: 2022 タイトル: Rotavirus VP4 Epitope of a Broadly Neutralizing Human Antibody Defined by Its Structure Bound with an Attenuated-Strain Virion. 著者: Simon Jenni / Zongli Li / Yuhuan Wang / Theresa Bessey / Eric N Salgado / Aaron G Schmidt / Harry B Greenberg / Baoming Jiang / Stephen C Harrison / 要旨: Rotavirus live-attenuated vaccines, both mono- and pentavalent, generate broadly heterotypic protection. B-cells isolated from adults encode neutralizing antibodies, some with affinity for VP5*, that ...Rotavirus live-attenuated vaccines, both mono- and pentavalent, generate broadly heterotypic protection. B-cells isolated from adults encode neutralizing antibodies, some with affinity for VP5*, that afford broad protection in mice. We have mapped the epitope of one such antibody by determining the high-resolution cryo-EM structure of its antigen-binding fragment (Fab) bound to the virion of a candidate vaccine strain, CDC-9. The Fab contacts both the distal end of a VP5* β-barrel domain and the two VP8* lectin-like domains at the tip of a projecting spike. Its interactions with VP8* do not impinge on the likely receptor-binding site, suggesting that the mechanism of neutralization is at a step subsequent to initial attachment. We also examined structures of CDC-9 virions from two different stages of serial passaging. Nearly all the VP4 (cleaved to VP8*/VP5*) spikes on particles from the earlier passage (wild-type isolate) had transitioned from the "upright" conformation present on fully infectious virions to the "reversed" conformation that is probably the end state of membrane insertion, unable to mediate penetration, consistent with the very low infectivity of the wild-type isolate. About half the VP4 spikes were upright on particles from the later passage, which had recovered substantial infectivity but had acquired an attenuated phenotype in neonatal rats. A mutation in VP4 that occurred during passaging appears to stabilize the interface at the apex of the spike and could account for the greater stability of the upright spikes on the late-passage, attenuated isolate. Rotavirus live-attenuated vaccines generate broadly heterotypic protection, and B-cells isolated from adults encode antibodies that are broadly protective in mice. Determining the structural and mechanistic basis of broad protection can contribute to understanding the current limitations of vaccine efficacy in developing countries. The structure of an attenuated human rotavirus isolate (CDC-9) bound with the Fab fragment of a broadly heterotypic protective antibody shows that protection is probably due to inhibition of the conformational transition in the viral spike protein (VP4) critical for viral penetration, rather than to inhibition of receptor binding. A comparison of structures of CDC-9 virus particles at two stages of serial passaging supports a proposed mechanism for initial steps in rotavirus membrane penetration. | |||||||||
履歴 |
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-構造の表示
添付画像 |
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-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_26608.map.gz | 11.8 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-26608-v30.xml emd-26608.xml | 52.6 KB 52.6 KB | 表示 表示 | EMDBヘッダ |
FSC (解像度算出) | emd_26608_fsc.xml | 11.3 KB | 表示 | FSCデータファイル |
画像 | emd_26608.png | 137.6 KB | ||
マスクデータ | emd_26608_msk_1.map | 125 MB | マスクマップ | |
その他 | emd_26608_additional_1.map.gz emd_26608_additional_10.map.gz emd_26608_additional_11.map.gz emd_26608_additional_12.map.gz emd_26608_additional_13.map.gz emd_26608_additional_14.map.gz emd_26608_additional_2.map.gz emd_26608_additional_3.map.gz emd_26608_additional_4.map.gz emd_26608_additional_5.map.gz emd_26608_additional_6.map.gz emd_26608_additional_7.map.gz emd_26608_additional_8.map.gz emd_26608_additional_9.map.gz emd_26608_half_map_1.map.gz emd_26608_half_map_2.map.gz | 7.2 MB 98 MB 5.3 MB 98.1 MB 1.7 MB 5.3 MB 9.7 MB 9.7 MB 114.2 MB 98.3 MB 12.2 MB 98.3 MB 12.2 MB 114.7 MB 12.3 MB 12.3 MB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-26608 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-26608 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_26608_validation.pdf.gz | 653.4 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_26608_full_validation.pdf.gz | 652.9 KB | 表示 | |
XML形式データ | emd_26608_validation.xml.gz | 18 KB | 表示 | |
CIF形式データ | emd_26608_validation.cif.gz | 24 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-26608 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-26608 | HTTPS FTP |
-関連構造データ
関連構造データ | 7umsMC 7umtC M: このマップから作成された原子モデル C: 同じ文献を引用 (文献) |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-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_26608.map.gz / 形式: CCP4 / 大きさ: 125 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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注釈 | Composite map, reconstructed, sharpen_map. | ||||||||||||||||||||||||||||||||||||
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: 1.231 Å | ||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
+マスク #1
+追加マップ: Mask, subparticle map 1.
+追加マップ: Half map 1, subparticle map 2, reconstructed.
+追加マップ: Half map 1, subparticle map 2, reconstructed, masked.
+追加マップ: Half map 2, subparticle map 2, reconstructed.
+追加マップ: Mask, subparticle map 2.
+追加マップ: Half map 2, subparticle map 2, reconstructed, masked.
+追加マップ: Half map 1, composite map, reconstructed, masked.
+追加マップ: Half map 2, composite map, reconstructed, masked.
+追加マップ: Subparticle map 1, reconstructed, sharpen map.
+追加マップ: Half map 1, subparticle map 1, reconstructed.
+追加マップ: Half map 1, subparticle map 1, reconstructed, masked.
+追加マップ: Half map 2, subparticle map 1, reconstructed.
+追加マップ: Half map 2, subparticle map 1, reconstructed, masked.
+追加マップ: Subparticle map 2, reconstructed, sharpen map.
+ハーフマップ: Half map 1, composite map, reconstructed.
+ハーフマップ: Half map 2, composite map, reconstructed.
-試料の構成要素
+全体 : Rotavirus with Fab bound
+超分子 #1: Rotavirus with Fab bound
+超分子 #3: Fab 41
+超分子 #2: Rotavirus
+分子 #1: Outer capsid protein VP8*
+分子 #2: Outer capsid protein VP5*
+分子 #3: Fab 41 heavy chain
+分子 #4: Fab 41 light chain
+分子 #5: Intermediate capsid protein VP6
+分子 #6: Outer capsid glycoprotein VP7
+分子 #8: 2-acetamido-2-deoxy-beta-D-glucopyranose
+分子 #9: CALCIUM ION
-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: GATAN K2 SUMMIT (4k x 4k) 平均電子線量: 60.0 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 / 最大 デフォーカス(公称値): 3.5 µm / 最小 デフォーカス(公称値): 1.0 µm |
実験機器 | モデル: Tecnai Polara / 画像提供: FEI Company |