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- EMDB-31555: Complex of FMDV A/WH/CHA/09 and bovine neutralizing scFv antibody R55 -
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データを開く
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基本情報
登録情報 | データベース: EMDB / ID: EMD-31555 | |||||||||
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タイトル | Complex of FMDV A/WH/CHA/09 and bovine neutralizing scFv antibody R55 | |||||||||
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機能・相同性 | ![]() L-peptidase / symbiont-mediated perturbation of host chromatin organization / ribonucleoside triphosphate phosphatase activity / picornain 3C / T=pseudo3 icosahedral viral capsid / host cell cytoplasmic vesicle membrane / viral capsid / host cell / regulation of translation / nucleoside-triphosphate phosphatase ...L-peptidase / symbiont-mediated perturbation of host chromatin organization / ribonucleoside triphosphate phosphatase activity / picornain 3C / T=pseudo3 icosahedral viral capsid / host cell cytoplasmic vesicle membrane / viral capsid / host cell / regulation of translation / nucleoside-triphosphate phosphatase / channel activity / monoatomic ion transmembrane transport / clathrin-dependent endocytosis of virus by host cell / host cell cytoplasm / RNA helicase activity / viral protein processing / host cell endoplasmic reticulum membrane / symbiont entry into host cell / symbiont-mediated activation of host autophagy / RNA-directed RNA polymerase / cysteine-type endopeptidase activity / viral RNA genome replication / RNA-directed RNA polymerase activity / DNA-templated transcription / virion attachment to host cell / host cell nucleus / structural molecule activity / proteolysis / RNA binding / ATP binding / membrane 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: 3.91 Å | |||||||||
![]() | Yong H / Kun L | |||||||||
![]() | ![]() タイトル: Structures of Foot-and-Mouth Disease Virus with Bovine Neutralizing Antibodies Reveal the Determinant of Intraserotype Cross-Neutralization. 著者: Yong He / Kun Li / Li Wang / Zixian Sun / Yimei Cao / Pinghua Li / Pu Sun / Huifang Bao / Shasha Zhou / Sheng Wang / Xingwen Bai / Xuerong Liu / Lixia Zhao / Xiuli Fan / Zaixin Liu / Zengjun ...著者: Yong He / Kun Li / Li Wang / Zixian Sun / Yimei Cao / Pinghua Li / Pu Sun / Huifang Bao / Shasha Zhou / Sheng Wang / Xingwen Bai / Xuerong Liu / Lixia Zhao / Xiuli Fan / Zaixin Liu / Zengjun Lu / Cheng Yang / Zhiyong Lou / ![]() 要旨: Foot-and-mouth disease virus (FMDV) exhibits broad antigenic diversity with poor intraserotype cross-neutralizing activity. Studies of the determinant involved in this diversity are essential for the ...Foot-and-mouth disease virus (FMDV) exhibits broad antigenic diversity with poor intraserotype cross-neutralizing activity. Studies of the determinant involved in this diversity are essential for the development of broadly protective vaccines. In this work, we isolated a bovine antibody, designated R55, that displays cross-reaction with both FMDV A/AF/72 (hereafter named FMDV-AAF) and FMDV A/WH/09 (hereafter named FMDV-AWH) but only has a neutralizing effect on FMDV-AWH. Near-atomic resolution structures of FMDV-AAF-R55 and FMDV-AWH-R55 show that R55 engages the capsids of both FMDV-AAF and FMDV-AWH near the icosahedral 3-fold axis and binds to the βB and BC/HI-loops of VP2 and to the B-B knob of VP3. The common interaction residues are highly conserved, which is the major determinant for cross-reaction with both FMDV-AAF and FMDV-AWH. In addition, the cryo-EM structure of the FMDV-AWH-R55 complex also shows that R55 binds to E70 located at the VP3 BC-loop in an adjacent pentamer, which enhances the acid and thermal stabilities of the viral capsid. This may prevent capsid dissociation and genome release into host cells, eventually leading to neutralization of the viral infection. In contrast, R55 binds only to the FMDV-AAF capsid within one pentamer due to the E70G variation, which neither enhances capsid stability nor neutralizes FMDV-AAF infection. The E70G mutation is the major determinant involved in the neutralizing differences between FMDV-AWH and FMDV-AAF. The crucial amino acid E70 is a key component of the neutralizing epitopes, which may aid in the development of broadly protective vaccines. Foot-and-mouth disease virus (FMDV) causes a highly contagious and economically devastating disease in cloven-hoofed animals, and neutralizing antibodies play critical roles in the defense against viral infections. Here, we isolated a bovine antibody (R55) using the single B cell antibody isolation technique. Enzyme-linked immunosorbent assays (ELISA) and virus neutralization tests (VNT) showed that R55 displays cross-reactions with both FMDV-AWH and FMDV-AAF but only has a neutralizing effect on FMDV-AWH. Cryo-EM structures, fluorescence-based thermal stability assays and acid stability assays showed that R55 engages the capsid of FMDV-AWH near the icosahedral 3-fold axis and informs an interpentamer epitope, which overstabilizes virions to hinder capsid dissociation to release the genome, eventually leading to neutralization of viral infection. The crucial amino acid E70 forms a key component of neutralizing epitopes, and the determination of the E70G mutation involved in the neutralizing differences between FMDV-AWH and FMDV-AAF could aid in the development of broadly protective vaccines. | |||||||||
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「今月の分子」の関連する項目 |
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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: 0.93 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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試料の構成要素
-全体 : Complex of FMDV A/WH/CHA/09 and bovine neutralizing scFv antibody R55
全体 | 名称: Complex of FMDV A/WH/CHA/09 and bovine neutralizing scFv antibody R55 |
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要素 |
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-超分子 #1: Complex of FMDV A/WH/CHA/09 and bovine neutralizing scFv antibody R55
超分子 | 名称: Complex of FMDV A/WH/CHA/09 and bovine neutralizing scFv antibody R55 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: FMDV A/WH/CHA/09
超分子 | 名称: FMDV A/WH/CHA/09 / タイプ: complex / ID: 2 / 親要素: 1 / 含まれる分子: #1-#4 |
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由来(天然) | 生物種: ![]() ![]() |
-超分子 #3: bovine neutralizing scFv antibody R55
超分子 | 名称: bovine neutralizing scFv antibody R55 / タイプ: complex / ID: 3 / 親要素: 1 / 含まれる分子: #5-#6 |
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-分子 #1: Capsid protein VP0
分子 | 名称: Capsid protein VP0 / タイプ: protein_or_peptide / ID: 1 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 23.402678 KDa |
配列 | 文字列: TTATGESADP VTTTVENYGG ETQVQRRHHT DVSFIMDRFV QIKPVSPTHV IDLMQTHQHG LVGAMLRAAT YYFSDLEIVV NHTGRLTWV PNGAPEAALD NTSNPTAYHK APFTRLALPY TAPHRVLATV YNGNSKYSAP ATRRGDLGSL AARLAAQLPA S FNYGAIRA ...文字列: TTATGESADP VTTTVENYGG ETQVQRRHHT DVSFIMDRFV QIKPVSPTHV IDLMQTHQHG LVGAMLRAAT YYFSDLEIVV NHTGRLTWV PNGAPEAALD NTSNPTAYHK APFTRLALPY TAPHRVLATV YNGNSKYSAP ATRRGDLGSL AARLAAQLPA S FNYGAIRA TEIQELLVRM KRAELYCPRP LLAVKVTSQD RHKQKIIAPA KQLL UniProtKB: Genome polyprotein |
-分子 #2: Capsid protein VP0
分子 | 名称: Capsid protein VP0 / タイプ: protein_or_peptide / ID: 2 / コピー数: 1 / 光学異性体: LEVO / EC番号: RNA-directed RNA polymerase |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 24.541584 KDa |
配列 | 文字列: DKKTEETTLL EDRILTTRNG HTTSTTQSSV GVTYGYSTGE DHVSGPNTSG LETRVVQAER FFKKHLFDWT TDKPFGHIEK LELPTDHKG VYGQLVDSFA YMRNGWDVEV SAVGNQFNGG CLLVAMVPEF KEFTTREKYQ LTLFPHQFIS PRTNMTAHIT V PYLGVNRY ...文字列: DKKTEETTLL EDRILTTRNG HTTSTTQSSV GVTYGYSTGE DHVSGPNTSG LETRVVQAER FFKKHLFDWT TDKPFGHIEK LELPTDHKG VYGQLVDSFA YMRNGWDVEV SAVGNQFNGG CLLVAMVPEF KEFTTREKYQ LTLFPHQFIS PRTNMTAHIT V PYLGVNRY DQYNKHKPWT LVVMVVSPLT TSSIGASQIK VYTNIAPTHV HVAGELPSKE UniProtKB: Genome polyprotein |
-分子 #3: Capsid protein VP0
分子 | 名称: Capsid protein VP0 / タイプ: protein_or_peptide / ID: 3 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 24.157025 KDa |
配列 | 文字列: GIVPVACSDG YGGLVTTDPK TADPAYGMVY NPPRTNYPGR FTNLLDVAEA CPTFLCFDDG KPYVVTRADE QRLLAKFDLS LAAKHMSNT YLSGIAQYYA QYSGTINLHF MFTGSTDSKA RYMVAYVPPG VTTPPDTPER AAHCIHAEWD TGLNSKFTFS I PYVSAADY ...文字列: GIVPVACSDG YGGLVTTDPK TADPAYGMVY NPPRTNYPGR FTNLLDVAEA CPTFLCFDDG KPYVVTRADE QRLLAKFDLS LAAKHMSNT YLSGIAQYYA QYSGTINLHF MFTGSTDSKA RYMVAYVPPG VTTPPDTPER AAHCIHAEWD TGLNSKFTFS I PYVSAADY AYTASDVADT TNVQGWVCIY QITHGKAEQD TLVVSVSAGK DFELRLPIDP RAQ UniProtKB: Genome polyprotein |
-分子 #4: Capsid protein VP0
分子 | 名称: Capsid protein VP0 / タイプ: protein_or_peptide / ID: 4 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 8.778129 KDa |
配列 | 文字列: GAGQSSPATG SQNQSGNTGS IINNYYMQQY QNSMDTQLGD NAISGGSNEG STDTTSSHTT NTQNNDWFSK LASSAFTGLF GALLA UniProtKB: Genome polyprotein |
-分子 #5: IG HEAVY CHAIN VARIABLE REGION
分子 | 名称: IG HEAVY CHAIN VARIABLE REGION / タイプ: protein_or_peptide / ID: 5 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() ![]() |
分子量 | 理論値: 13.615155 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: QVQLRESGPS LVKPSQTLSL TCTVSGFSLS DYAVGWVRQA PGKALEFLGS ISTGGNTGYN PALKSRLSIT KDNSKNQVSL SLSSVTTED TATYYCTKSI HSYSVFEYTY MQYVDAWGQG LLVPVSS |
-分子 #6: IG LAMDA CHAIN VARIABLE REGION
分子 | 名称: IG LAMDA CHAIN VARIABLE REGION / タイプ: protein_or_peptide / ID: 6 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() ![]() |
分子量 | 理論値: 12.88685 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: WAQAVLTQPS SVSGSLGQRV SITCSGSSNN IGRYDVGWYQ QIPGSGLRTI IYASKNRPSG VPDRFSGSRS GNTATLTISS LQAEDEADY FCATGDYSSS TSVFGSGTTL TVLGDYKDDD DKGG |
-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 | FEI TALOS ARCTICA |
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撮影 | フィルム・検出器のモデル: DIRECT ELECTRON DE-16 (4k x 4k) 平均電子線量: 25.0 e/Å2 |
電子線 | 加速電圧: 200 kV / 電子線源: ![]() |
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: Talos Arctica / 画像提供: FEI Company |
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画像解析
初期モデル | モデルのタイプ: EMDB MAP |
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最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 3.91 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用した粒子像数: 14535 |
初期 角度割当 | タイプ: ANGULAR RECONSTITUTION |
最終 角度割当 | タイプ: ANGULAR RECONSTITUTION |