+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-6963 | |||||||||
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タイトル | Fit R10 Fab coordinates into the cryo-EM of EV71 in complex with D6 | |||||||||
マップデータ | ||||||||||
試料 |
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キーワード | EV71 NEUTRALIZING ANTIBODY / ANTIVIRAL PROTEIN / VIRUS LIKE PARTICLE | |||||||||
機能・相同性 | 機能・相同性情報 symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MDA-5 activity / picornain 2A / symbiont-mediated suppression of host mRNA export from nucleus / symbiont genome entry into host cell via pore formation in plasma membrane / picornain 3C / T=pseudo3 icosahedral viral capsid / host cell cytoplasmic vesicle membrane / cytoplasmic vesicle membrane / endocytosis involved in viral entry into host cell / symbiont-mediated suppression of host gene expression ...symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MDA-5 activity / picornain 2A / symbiont-mediated suppression of host mRNA export from nucleus / symbiont genome entry into host cell via pore formation in plasma membrane / picornain 3C / T=pseudo3 icosahedral viral capsid / host cell cytoplasmic vesicle membrane / cytoplasmic vesicle membrane / endocytosis involved in viral entry into host cell / symbiont-mediated suppression of host gene expression / nucleoside-triphosphate phosphatase / channel activity / viral capsid / monoatomic ion transmembrane transport / RNA helicase activity / induction by virus of host autophagy / symbiont entry into host cell / RNA-directed RNA polymerase / viral RNA genome replication / cysteine-type endopeptidase activity / RNA-dependent RNA polymerase activity / virus-mediated perturbation of host defense response / DNA-templated transcription / host cell nucleus / virion attachment to host cell / structural molecule activity / ATP hydrolysis activity / proteolysis / RNA binding / ATP binding / metal ion binding 類似検索 - 分子機能 | |||||||||
生物種 | Enterovirus A71 (エンテロウイルス) / Mus musculoides (ネズミ) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 4.9 Å | |||||||||
データ登録者 | Wang X / Zhu L | |||||||||
引用 | ジャーナル: mBio / 年: 2018 タイトル: Neutralization Mechanisms of Two Highly Potent Antibodies against Human Enterovirus 71. 著者: Ling Zhu / Kangwei Xu / Nan Wang / Lei Cao / Junlan Wu / Qiang Gao / Elizabeth E Fry / David I Stuart / Zihe Rao / Junzhi Wang / Xiangxi Wang / 要旨: Despite significant advances in health care, outbreaks of infections by enteroviruses (EVs) continue to plague the Asia-Pacific region every year. Enterovirus 71 (EV71) causes hand-foot-and-mouth ...Despite significant advances in health care, outbreaks of infections by enteroviruses (EVs) continue to plague the Asia-Pacific region every year. Enterovirus 71 (EV71) causes hand-foot-and-mouth disease (HFMD), for which there are currently no therapeutics. Here, we report two new antibodies, A9 and D6, that potently neutralize EV71. A9 exhibited a 50% neutralizing concentration (neut) value of 0.1 nM against EV71, which was 10-fold lower than that observed for D6. Investigation into the mechanisms of neutralization revealed that binding of A9 to EV71 blocks receptor binding but also destabilizes and damages the virus capsid structure. In contrast, D6 destabilizes the capsid only slightly but interferes more potently with the attachment of the virus to the host cells. Cryo-electron microscopy (cryo-EM) structures of A9 and D6 bound with EV71 shed light on the locations and nature of the epitopes recognized by the two antibodies. Although some regions of the epitopes recognized by the two antibodies overlap, there are differences that give rise to dissimilarities in potency as well as in the mechanisms of neutralization. Interestingly, the overlapping regions of the epitopes encompass the site that the virus uses to bind SCARB2, explaining the reason for the observed blocking of the virus-receptor interaction by the two antibodies. We also identified structural elements that might play roles in modulating the stability of the EV71 particles, including particle integrity. The molecular features of the A9 and D6 epitopes unveiled in this study open up new avenues for rationally designing antiviral drugs. During the course of viral infections, the human body produces neutralizing antibodies which play a defining role in clearing the virus. From this study, we report two new, highly potent neutralizing antibodies, A9 and D6, against enterovirus 71 (EV71), the causative agent of HFMD. Both antibodies prevent the virus from entering the host cell, a step that is important for establishing a successful infection. A9 destabilizes and damages the virus capsid that forms an outer protective covering around the genome of the virus, while also interfering with virus attachment to the host cells. In contrast, D6 only prevents binding of the virus to its receptor(s). The mechanism of neutralization of A9 is unique and has not been observed before for neutralizing antibodies targeting EVs. The two antibodies that we are reporting in this study have potential to be developed into much-needed therapeutic interventions for treatment of HFMD, outbreaks of which are reported every year in the Asia-Pacific region. | |||||||||
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 | EMマップ: SurfViewMolmilJmol/JSmol |
-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_6963.map.gz | 395.1 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-6963-v30.xml emd-6963.xml | 15 KB 15 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_6963.png | 195.4 KB | ||
Filedesc metadata | emd-6963.cif.gz | 5.8 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-6963 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-6963 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_6963_validation.pdf.gz | 692 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_6963_full_validation.pdf.gz | 691.6 KB | 表示 | |
XML形式データ | emd_6963_validation.xml.gz | 7.6 KB | 表示 | |
CIF形式データ | emd_6963_validation.cif.gz | 8.9 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-6963 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-6963 | HTTPS FTP |
-関連構造データ
-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_6963.map.gz / 形式: CCP4 / 大きさ: 421.9 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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: 1.35 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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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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-添付データ
-試料の構成要素
-全体 : COMPLEX OF EV71 AND D6 NEUTRALIZING ANTIBODY FAB
全体 | 名称: COMPLEX OF EV71 AND D6 NEUTRALIZING ANTIBODY FAB |
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要素 |
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-超分子 #1: COMPLEX OF EV71 AND D6 NEUTRALIZING ANTIBODY FAB
超分子 | 名称: COMPLEX OF EV71 AND D6 NEUTRALIZING ANTIBODY FAB / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all 詳細: D6 FAB GENERATED BY MICE AND CLEAVAGE BY ENZYME FROM ANTIBODY |
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-超分子 #2: EV71
超分子 | 名称: EV71 / タイプ: complex / ID: 2 / 親要素: 1 / 含まれる分子: #1-#3 / 詳細: capsid protein VP1,VP2,VP3 |
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由来(天然) | 生物種: Enterovirus A71 (エンテロウイルス) |
-超分子 #3: D6 NEUTRALIZING ANTIBODY FAB
超分子 | 名称: D6 NEUTRALIZING ANTIBODY FAB / タイプ: complex / ID: 3 / 親要素: 1 / 含まれる分子: #4-#5 / 詳細: antibodies |
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由来(天然) | 生物種: Mus musculoides (ネズミ) |
-分子 #1: Capsid protein VP1
分子 | 名称: Capsid protein VP1 / 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: Enterovirus A71 (エンテロウイルス) |
分子量 | 理論値: 32.787902 KDa |
組換発現 | 生物種: Chlorocebus aethiops (ミドリザル) |
配列 | 文字列: GDRVADVIES SIEDSSSRAL THALPAPTGQ NTQVSSHRLD TGKVPALQAA EIGASSNASD ESMIETRCVL NSHSTAETTL DSFFSRAGL VGEIDLPLKG TTNPNGYANW DIDITGYAQM RRKVELFTYM RFDAEFTFVA CTPTGEVVPQ LLQYMFVPPG A PKPDSRES ...文字列: GDRVADVIES SIEDSSSRAL THALPAPTGQ NTQVSSHRLD TGKVPALQAA EIGASSNASD ESMIETRCVL NSHSTAETTL DSFFSRAGL VGEIDLPLKG TTNPNGYANW DIDITGYAQM RRKVELFTYM RFDAEFTFVA CTPTGEVVPQ LLQYMFVPPG A PKPDSRES LAWQTATNPS VFVKLSDPPA QVSVPFMSPA SAYQWFYDGY PTFGEHKQEK DLEYGAMPNN MMGTFSVRTV GT SKSKYPL VVRIYMRMKH VRAWIPRPMR NQNYLFKANP NYAGNSIKPT GASRTAITTL UniProtKB: Genome polyprotein |
-分子 #2: VP2
分子 | 名称: VP2 / タイプ: protein_or_peptide / ID: 2 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: Enterovirus A71 (エンテロウイルス) |
分子量 | 理論値: 26.874252 KDa |
組換発現 | 生物種: Chlorocebus aethiops (ミドリザル) |
配列 | 文字列: SDRVAQLTIG NSTITTQEAA NIIVGYGEWP SYCSDSDATA VDKPTRPDVS VNRFYTLDTK LWEKSSKGWY WKFPDVLTET GVFGQNAQF HYLYRSGFCI HVQCNASKFH QGALLVAVLP EYVIGTVAGG TGTEDTHPPY KQTQPGADGF ELQHPYVLDA G IPISQLTV ...文字列: SDRVAQLTIG NSTITTQEAA NIIVGYGEWP SYCSDSDATA VDKPTRPDVS VNRFYTLDTK LWEKSSKGWY WKFPDVLTET GVFGQNAQF HYLYRSGFCI HVQCNASKFH QGALLVAVLP EYVIGTVAGG TGTEDTHPPY KQTQPGADGF ELQHPYVLDA G IPISQLTV CPHQWINLRT NNCATIIVPY INALPFDSAL NHCNFGLLVV PISPLDYDQG ATPVIPITIT LAPMCSEFAG LR QAVTQ UniProtKB: Genome polyprotein |
-分子 #3: VP3
分子 | 名称: VP3 / 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: Enterovirus A71 (エンテロウイルス) |
分子量 | 理論値: 26.468225 KDa |
組換発現 | 生物種: Chlorocebus aethiops (ミドリザル) |
配列 | 文字列: GFPTELKPGT NQFLTTDDGV SAPILPNFHP TPCIHIPGEV RNLLELCQVE TILEVNNVPT NATSLMERLR FPVSAQAGKG ELCAVFRAD PGRNGPWQST LLGQLCGYYT QWSGSLEVTF MFTGSFMATG KMLIAYTPPG GPLPKDRATA MLGTHVIWDF G LQSSVTLV ...文字列: GFPTELKPGT NQFLTTDDGV SAPILPNFHP TPCIHIPGEV RNLLELCQVE TILEVNNVPT NATSLMERLR FPVSAQAGKG ELCAVFRAD PGRNGPWQST LLGQLCGYYT QWSGSLEVTF MFTGSFMATG KMLIAYTPPG GPLPKDRATA MLGTHVIWDF G LQSSVTLV IPWISNTHYR AHARDGVFDY YTTGLVSIWY QTNYVVPIGA PNTAYIIALA AAQKNFTMKL CKDASDILQT GT IQ UniProtKB: Genome polyprotein |
-分子 #4: R10 ANTIBODY LIGHT CHAIN
分子 | 名称: R10 ANTIBODY LIGHT CHAIN / 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: Mus musculoides (ネズミ) |
分子量 | 理論値: 23.283535 KDa |
組換発現 | 生物種: Mus musculoides (ネズミ) |
配列 | 文字列: DIVLTQSPAI MSASPGEKVT MTCSASSSVS YIHWYQQKSG TSPKRWIYDT SRLAFGVPGR FSGSGSGTSY SLTISSMEAE DAATYYCQQ WSSNYTFGGG TNLEIKRADA APTVSIFPPS SEQLTSGGAS VVCFLNNFYP KDINVKWKID GSERQNGVLN S WTDQDSKD ...文字列: DIVLTQSPAI MSASPGEKVT MTCSASSSVS YIHWYQQKSG TSPKRWIYDT SRLAFGVPGR FSGSGSGTSY SLTISSMEAE DAATYYCQQ WSSNYTFGGG TNLEIKRADA APTVSIFPPS SEQLTSGGAS VVCFLNNFYP KDINVKWKID GSERQNGVLN S WTDQDSKD STYSMSSTLT LTKDEYERHN SYTCEATHKT STSPIVKSFN RNEC |
-分子 #5: R10 ANTIBODY HEAVY CHAIN
分子 | 名称: R10 ANTIBODY HEAVY CHAIN / 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: Mus musculoides (ネズミ) |
分子量 | 理論値: 23.67165 KDa |
組換発現 | 生物種: Mus musculoides (ネズミ) |
配列 | 文字列: EVKLVESGGG SVKPGGSLKL SCAASGFSFS TYGMSWVRQT PEKRLEWVAT ISGGGGYTYY PDSVKGRFTI SRDNARNILY LQMSSLRSG DTAMYYCARR VTTVAEYYFD YWGQGTTLTV SSPKTTPPSV YPLAPAAAQT NSMVTLGCLV KGYFPEPVTV T WNSGSLSS ...文字列: EVKLVESGGG SVKPGGSLKL SCAASGFSFS TYGMSWVRQT PEKRLEWVAT ISGGGGYTYY PDSVKGRFTI SRDNARNILY LQMSSLRSG DTAMYYCARR VTTVAEYYFD YWGQGTTLTV SSPKTTPPSV YPLAPAAAQT NSMVTLGCLV KGYFPEPVTV T WNSGSLSS GVHTFPAVLQ SDLYTLSSSV TVPSSTWPSE TVTCNVAHPA SSTKVDKKIV PR |
-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: 20.0 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: Tecnai Polara / 画像提供: FEI Company |
-画像解析
初期モデル | モデルのタイプ: INSILICO MODEL |
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最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 4.9 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用した粒子像数: 1500 |
初期 角度割当 | タイプ: RANDOM ASSIGNMENT |
最終 角度割当 | タイプ: ANGULAR RECONSTITUTION |