+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 3jbf | ||||||
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タイトル | Complex of poliovirus with VHH PVSP19B | ||||||
要素 |
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キーワード | VIRUS/IMMUNE SYSTEM / poliovirus / nanobodies / VHH / neutralizing antibodies / VIRUS-IMMUNE SYSTEM complex | ||||||
機能・相同性 | 機能・相同性情報 symbiont-mediated suppression of host translation initiation / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of RIG-I activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MDA-5 activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MAVS 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 / ribonucleoside triphosphate phosphatase activity / T=pseudo3 icosahedral viral capsid ...symbiont-mediated suppression of host translation initiation / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of RIG-I activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MDA-5 activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MAVS 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 / ribonucleoside triphosphate phosphatase activity / T=pseudo3 icosahedral viral capsid / host cell cytoplasmic vesicle membrane / endocytosis involved in viral entry into host cell / nucleoside-triphosphate phosphatase / channel activity / monoatomic ion transmembrane transport / RNA helicase activity / induction by virus of host autophagy / 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 / proteolysis / RNA binding / ATP binding / membrane / metal ion binding 類似検索 - 分子機能 | ||||||
生物種 | Camelus dromedarius (ヒトコブラクダ) Human poliovirus 1 Mahoney (ポリオウイルス) | ||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 4.8 Å | ||||||
データ登録者 | Strauss, M. / Schotte, L. / Thys, B. / Filman, D.J. / Hogle, J.M. | ||||||
引用 | ジャーナル: J Virol / 年: 2016 タイトル: Five of Five VHHs Neutralizing Poliovirus Bind the Receptor-Binding Site. 著者: Mike Strauss / Lise Schotte / Bert Thys / David J Filman / James M Hogle / 要旨: Nanobodies, or VHHs, that recognize poliovirus type 1 have previously been selected and characterized as candidates for antiviral agents or reagents for standardization of vaccine quality control. In ...Nanobodies, or VHHs, that recognize poliovirus type 1 have previously been selected and characterized as candidates for antiviral agents or reagents for standardization of vaccine quality control. In this study, we present high-resolution cryo-electron microscopy reconstructions of poliovirus with five neutralizing VHHs. All VHHs bind the capsid in the canyon at sites that extensively overlap the poliovirus receptor-binding site. In contrast, the interaction involves a unique (and surprisingly extensive) surface for each of the five VHHs. Five regions of the capsid were found to participate in binding with all five VHHs. Four of these five regions are known to alter during the expansion of the capsid associated with viral entry. Interestingly, binding of one of the VHHs, PVSS21E, resulted in significant changes of the capsid structure and thus seems to trap the virus in an early stage of expansion. IMPORTANCE: We describe the cryo-electron microscopy structures of complexes of five neutralizing VHHs with the Mahoney strain of type 1 poliovirus at resolutions ranging from 3.8 to 6.3Å. All five ...IMPORTANCE: We describe the cryo-electron microscopy structures of complexes of five neutralizing VHHs with the Mahoney strain of type 1 poliovirus at resolutions ranging from 3.8 to 6.3Å. All five VHHs bind deep in the virus canyon at similar sites that overlap extensively with the binding site for the receptor (CD155). The binding surfaces on the VHHs are surprisingly extensive, but despite the use of similar binding surfaces on the virus, the binding surface on the VHHs is unique for each VHH. In four of the five complexes, the virus remains essentially unchanged, but for the fifth there are significant changes reminiscent of but smaller in magnitude than the changes associated with cell entry, suggesting that this VHH traps the virus in a previously undescribed early intermediate state. The neutralizing mechanisms of the VHHs and their potential use as quality control agents for the end game of poliovirus eradication are discussed. | ||||||
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 | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 3jbf.cif.gz | 178.6 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb3jbf.ent.gz | 138.6 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 3jbf.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 3jbf_validation.pdf.gz | 872 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 3jbf_full_validation.pdf.gz | 901.9 KB | 表示 | |
XML形式データ | 3jbf_validation.xml.gz | 37.7 KB | 表示 | |
CIF形式データ | 3jbf_validation.cif.gz | 55.6 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/jb/3jbf ftp://data.pdbj.org/pub/pdb/validation_reports/jb/3jbf | HTTPS FTP |
-関連構造データ
-リンク
-集合体
登録構造単位 |
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1 |
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2 |
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3 |
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4 |
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5 |
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対称性 | 点対称性: (シェーンフリース記号: I (正20面体型対称)) |
-要素
-Capsid protein ... , 4種, 4分子 1234
#1: タンパク質 | 分子量: 33488.613 Da / 分子数: 1 / 断片: UNP residues 580-881 / 由来タイプ: 天然 由来: (天然) Human poliovirus 1 Mahoney (ポリオウイルス) 株: Mahoney / 参照: UniProt: P03300 |
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#2: タンパク質 | 分子量: 30075.783 Da / 分子数: 1 / 断片: UNP residues 70-341 / 由来タイプ: 天然 由来: (天然) Human poliovirus 1 Mahoney (ポリオウイルス) 株: Mahoney / 参照: UniProt: P03300 |
#3: タンパク質 | 分子量: 26419.352 Da / 分子数: 1 / 断片: UNP residues 342-578 / 由来タイプ: 天然 由来: (天然) Human poliovirus 1 Mahoney (ポリオウイルス) 株: Mahoney / 参照: UniProt: P03300 |
#4: タンパク質 | 分子量: 7603.405 Da / 分子数: 1 / 断片: UNP residues 2-69 / 由来タイプ: 天然 由来: (天然) Human poliovirus 1 Mahoney (ポリオウイルス) 株: Mahoney / 参照: UniProt: P03300 |
-抗体 / 非ポリマー , 2種, 2分子 7
#5: 抗体 | 分子量: 14064.470 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) Camelus dromedarius (ヒトコブラクダ) Plasmid details: pHEN6(c) / 発現宿主: Escherichia coli (大腸菌) / 株 (発現宿主): WK6 |
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#6: 化合物 | ChemComp-PLM / |
-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
-試料調製
構成要素 |
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分子量 | 値: 9 MDa / 実験値: NO | ||||||||||||||||||||
ウイルスについての詳細 | 中空か: NO / エンベロープを持つか: NO / ホストのカテゴリ: VERTEBRATES / 単離: SEROTYPE / タイプ: VIRION | ||||||||||||||||||||
天然宿主 | 生物種: Homo sapiens | ||||||||||||||||||||
緩衝液 | 名称: 145 mM NaCl, 50 mM Na2HPO4.12H2O / pH: 7.4 / 詳細: 145 mM NaCl, 50 mM Na2HPO4.12H2O | ||||||||||||||||||||
試料 | 濃度: 1 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||
試料支持 | 詳細: C-flat 1.2/1.3 | ||||||||||||||||||||
急速凍結 | 装置: HOMEMADE PLUNGER / 凍結剤: ETHANE / Temp: 154 K 詳細: Blotted for 4 seconds before plunging into liquid ethane (homemade plunger). 手法: 4 second blot |
-電子顕微鏡撮影
実験機器 | モデル: Tecnai Polara / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI POLARA 300 / 日付: 2013年11月27日 / 詳細: Gatan K2 operated in Super-resolution mode |
電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM / Electron beam tilt params: 0 |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 23000 X / 倍率(補正後): 25381 X / 最大 デフォーカス(公称値): -4000 nm / 最小 デフォーカス(公称値): -1400 nm / Cs: 2.26 mm |
試料ホルダ | 試料ホルダーモデル: OTHER / 資料ホルダタイプ: Polara holder / 温度: 80 K / 最高温度: 110 K / 最低温度: 80 K |
撮影 | 電子線照射量: 25 e/Å2 / フィルム・検出器のモデル: GATAN K2 (4k x 4k) |
画像スキャン | デジタル画像の数: 300 |
-解析
EMソフトウェア |
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CTF補正 | 詳細: per particle | |||||||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: I (正20面体型対称) | |||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 4.8 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 18009 / ピクセルサイズ(公称値): 0.985 Å / ピクセルサイズ(実測値): 0.985 Å 詳細: (Single particle details: The particles were processed using Frealign.) (Single particle--Applied symmetry: I) 対称性のタイプ: POINT | |||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: FLEXIBLE FIT / 空間: RECIPROCAL Target criteria: ML agreement with Fourier amplitudes and phases 詳細: REFINEMENT PROTOCOL--flexible DETAILS--Using stereochemically and icosahedrally restrained maximum likelihood refinement in REFMAC5, a representative subset of the full atomic model with all ...詳細: REFINEMENT PROTOCOL--flexible DETAILS--Using stereochemically and icosahedrally restrained maximum likelihood refinement in REFMAC5, a representative subset of the full atomic model with all neighbors present was built and refined to fit the corresponding subset of the experimental map. Portions of the model whose density resembled a structural homolog were identified and restrained to agree with the homolog. Detailed atomic models were constructed in areas of difference wherever the resolution of the map permitted. The Fourier-amplitude-weighted average cosine of the phase discrepancy was tracked. | |||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | PDB-ID: 1I3U | |||||||||||||||||||||||||||||||||||||||||||||
精密化 | 解像度: 4.6→95.15 Å / Cor.coef. Fo:Fc: 0.702 / SU B: 110.77 / SU ML: 1.342 / σ(F): 0 / ESU R: 1.58 立体化学のターゲット値: MAXIMUM LIKELIHOOD WITH PHASES
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溶媒の処理 | 溶媒モデル: NONE | |||||||||||||||||||||||||||||||||||||||||||||
原子変位パラメータ | Biso max: 50 Å2 / Biso mean: 24.734 Å2 / Biso min: 10 Å2
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精密化ステップ | サイクル: LAST / 解像度: 4.6→95.15 Å
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拘束条件 |
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LS精密化 シェル | 解像度: 4.6→4.848 Å / Total num. of bins used: 10 /
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