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- EMDB-61511: Rat hepatitis E virus capsid protein E2s domain in complex with Fab H4 -
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基本情報
登録情報 | ![]() | |||||||||
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タイトル | Rat hepatitis E virus capsid protein E2s domain in complex with Fab H4 | |||||||||
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![]() | Hepatitis E virus / Capsid protein / E2s domain / Immune complex / H4 antibody / VIRAL PROTEIN/IMMUNE SYSTEM / VIRAL PROTEIN-IMMUNE SYSTEM complex | |||||||||
機能・相同性 | ![]() host cell endoplasmic reticulum / T=1 icosahedral viral capsid / host cell Golgi apparatus / host cell surface / structural molecule activity / RNA binding / extracellular region 類似検索 - 分子機能 | |||||||||
生物種 | ![]() ![]() | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.56 Å | |||||||||
![]() | Liu L / Zheng Q / Li S / Xia N | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Antibodies elicited by hepatitis E vaccination in humans confer cross-genus protection against rat hepatitis E virus. 著者: Zihao Chen / Liqin Liu / Jianwen Situ / Guanghui Li / Shaoqi Guo / Qi Lai / Shusheng Wu / Yanan Jiang / Jingyan Fan / Zimin Tang / Yu Li / Guiping Wen / Siling Wang / Dong Ying / Yonghao ...著者: Zihao Chen / Liqin Liu / Jianwen Situ / Guanghui Li / Shaoqi Guo / Qi Lai / Shusheng Wu / Yanan Jiang / Jingyan Fan / Zimin Tang / Yu Li / Guiping Wen / Siling Wang / Dong Ying / Yonghao Liang / Stanley Siu-Fung Ho / Xiaodan Ma / James Yiu-Hung Tsoi / Estie Hon-Kiu Shun / Nicholas Foo-Siong Chew / Weihui Ma / Weiwei Mao / Tingting Li / Zhenqin Chen / Mujin Fang / Yingbin Wang / Hai Yu / Fa Zhang / Anna Jinxia Zhang / Shaowei Li / Ningshao Xia / Siddharth Sridhar / Qingbing Zheng / Zizheng Zheng / ![]() 要旨: BACKGROUND & AIMS: Paslahepevirus balayani (bHEV), also known as hepatitis E virus (HEV), encompasses eight genotypes, five of which infect humans. Rats are natural reservoirs of Rocahepevirus ratti ...BACKGROUND & AIMS: Paslahepevirus balayani (bHEV), also known as hepatitis E virus (HEV), encompasses eight genotypes, five of which infect humans. Rats are natural reservoirs of Rocahepevirus ratti genotype 1 (HEV-r-1; rat HEV; rHEV), which has recently been implicated in viral hepatitis. Despite the antigenic divergence between bHEV and rHEV, studies on shared protective antibodies remain rare. 手法: Polyclonal and monoclonal antibody responses against bHEV and rHEV were analyzed using antibody enzyme-linked immunosorbent assays. The efficacy of six potent bHEV-elicited cross-reactive ...手法: Polyclonal and monoclonal antibody responses against bHEV and rHEV were analyzed using antibody enzyme-linked immunosorbent assays. The efficacy of six potent bHEV-elicited cross-reactive antibodies in preventing rHEV infection was evaluated via challenge assays in rats. Cryo-EM was performed to assess the structural basis for the differential protective efficacy of the six antibodies. The viral lysis ability of these antibodies was assessed by separately reacting purified HEV-b-1 and HEV-r-1 virions with each antibody. RESULTS: We determined that antibody responses to bHEV infection and vaccination possess limited cross-reactivity to rHEV and identified two cross-reactive antigenic sites within the E2s domain. ...RESULTS: We determined that antibody responses to bHEV infection and vaccination possess limited cross-reactivity to rHEV and identified two cross-reactive antigenic sites within the E2s domain. Structural analysis and animal challenge studies pinpointed potent cross-reactive antibodies targeting antigenic site 1, indicating its prophylactic efficacy against rHEV. Conversely, antibodies recognizing antigenic site 2 were found to facilitate viral lysis of bHEV but not rHEV. CONCLUSIONS: These findings underscore the importance of antigenic site 1 in the design of broad-spectrum vaccines and therapeutics to mitigate the impact of diverse HEV genotypes on human health. ...CONCLUSIONS: These findings underscore the importance of antigenic site 1 in the design of broad-spectrum vaccines and therapeutics to mitigate the impact of diverse HEV genotypes on human health. IMPACT AND IMPLICATIONS: rHEV spillover to humans represents an unprecedented threat. Significant antigenic differences between rHEV and bHEV may exacerbate the impact of viral hepatitis. Our study reveals that cross-reactive human antibodies can offer protection against rHEV infection. Cross-protective antibodies targeting antigenic site 1 can be used to inform the development of practical strategies for preventing rHEV infection. | |||||||||
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-EMDBアーカイブ
マップデータ | ![]() | 213 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 18.3 KB 18.3 KB | 表示 表示 | ![]() |
画像 | ![]() | 34.3 KB | ||
Filedesc metadata | ![]() | 5.8 KB | ||
その他 | ![]() ![]() | 226.4 MB 226.4 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 788.3 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 787.9 KB | 表示 | |
XML形式データ | ![]() | 15.3 KB | 表示 | |
CIF形式データ | ![]() | 18 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 9jinMC ![]() 9jieC ![]() 9jifC ![]() 9jigC ![]() 9jiiC ![]() 9jijC ![]() 9jikC ![]() 9jilC ![]() 9jimC ![]() 9jioC 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 ( |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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リンク
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||
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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: 0.65 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
-ハーフマップ: #2
ファイル | emd_61511_half_map_1.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: #1
ファイル | emd_61511_half_map_2.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
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試料の構成要素
-全体 : Rat HEV capsid protein E2s domain in complex with Fab H4
全体 | 名称: Rat HEV capsid protein E2s domain in complex with Fab H4 |
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要素 |
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-超分子 #1: Rat HEV capsid protein E2s domain in complex with Fab H4
超分子 | 名称: Rat HEV capsid protein E2s domain in complex with Fab H4 タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all |
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由来(天然) | 生物種: ![]() |
-超分子 #2: Rat HEV E2s domain
超分子 | 名称: Rat HEV E2s domain / タイプ: complex / ID: 2 / 親要素: 1 / 含まれる分子: #1 |
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由来(天然) | 生物種: ![]() |
-超分子 #3: H4 Fab
超分子 | 名称: H4 Fab / タイプ: complex / ID: 3 / 親要素: 1 / 含まれる分子: #2-#3 |
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由来(天然) | 生物種: ![]() |
-分子 #1: Pro-secreted protein ORF2
分子 | 名称: Pro-secreted protein ORF2 / タイプ: protein_or_peptide / ID: 1 詳細: Sequence reference for source organism Rocahepevirus ratti is not available in UniProt at the time of biocuration. Current sequence reference is from UniProt id A0A3G1TVH2. コピー数: 2 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 16.533393 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: PARPITNWRS GDVVWVTLPS AEYAQSQSAM GSHPAYWSEE ATIINVATGQ RAAVSSIKWD QVTLNGKALH KETHSGLVYY QLPLMGKIN FWQQGTTKAG YTYNYNTTDS DSLWVWWDGG SKAYLYISTY TTMLGAGPVN ITGLGAVGPN PV UniProtKB: Pro-secreted protein ORF2 |
-分子 #2: H4 Fab heavy chain
分子 | 名称: H4 Fab heavy chain / タイプ: protein_or_peptide / ID: 2 / コピー数: 2 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 14.244089 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: QVQLVQSGAE VKKPGASVKV ACKASGYNFI HYYLHWVRQA PGQGLEWMGI INPSVGRTTY AQKFQGRVTM TRDTSTSTVY MELSSLRSE DTAVYYCARD VGGMTYCGDE CFPPRGWFDP WGQGTLVTV |
-分子 #3: H4 Fab light chain
分子 | 名称: H4 Fab light chain / タイプ: protein_or_peptide / ID: 3 / コピー数: 2 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 11.06225 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: MPQVPVSLSA SVGDRVTITC QASQDIGNYL TWSQQKPGKA PKLLIYDASN LQTGVPSRFS GSGSGTYFTL TISSLQPEDI ATYYCQQYD NVPITFGGGT EVEI |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
緩衝液 | pH: 7.4 |
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凍結 | 凍結剤: ETHANE |
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電子顕微鏡法
顕微鏡 | TFS KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 平均電子線量: 48.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
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): 1.4000000000000001 µm 最小 デフォーカス(公称値): 0.6 µm |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |