+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 3j3p | ||||||
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タイトル | Conformational Shift of a Major Poliovirus Antigen Confirmed by Immuno-Cryogenic Electron Microscopy: 135S Poliovirus and C3-Fab Complex | ||||||
要素 |
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キーワード | VIRUS/IMMUNE SYSTEM / 135S cell-entry intermediate particle / antibody-antigen interaction / antibody-protein interaction / picornavirus / virus-antibody interaction / antibody neutralization / neutralizing antibody interaction / conformational change / VIRUS-IMMUNE SYSTEM complex | ||||||
機能・相同性 | 機能・相同性情報 positive regulation of B cell activation / symbiont-mediated suppression of host translation initiation / phagocytosis, recognition / humoral immune response mediated by circulating immunoglobulin / early endosome to late endosome transport / positive regulation of type IIa hypersensitivity / regulation of proteolysis / positive regulation of type I hypersensitivity / antibody-dependent cellular cytotoxicity / phagocytosis, engulfment ...positive regulation of B cell activation / symbiont-mediated suppression of host translation initiation / phagocytosis, recognition / humoral immune response mediated by circulating immunoglobulin / early endosome to late endosome transport / positive regulation of type IIa hypersensitivity / regulation of proteolysis / positive regulation of type I hypersensitivity / antibody-dependent cellular cytotoxicity / phagocytosis, engulfment / endosome to lysosome transport / immunoglobulin complex, circulating / immunoglobulin receptor binding / antigen processing and presentation / positive regulation of endocytosis / 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 / immunoglobulin mediated immune response / complement activation, classical pathway / positive regulation of phagocytosis / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MAVS activity / antigen binding / picornain 2A / multivesicular body / 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 / response to bacterium / host cell cytoplasmic vesicle membrane / endocytosis involved in viral entry into host cell / positive regulation of immune response / nucleoside-triphosphate phosphatase / channel activity / antibacterial humoral response / 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 / plasma membrane 類似検索 - 分子機能 | ||||||
生物種 | Mus musculus (ハツカネズミ) Human poliovirus 1 (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: 9.1 Å | ||||||
データ登録者 | Lin, J. / Cheng, N. / Hogle, J.M. / Steven, A.C. / Belnap, D.M. | ||||||
引用 | ジャーナル: J Immunol / 年: 2013 タイトル: Conformational shift of a major poliovirus antigen confirmed by immuno-cryogenic electron microscopy. 著者: Jun Lin / Naiqian Cheng / James M Hogle / Alasdair C Steven / David M Belnap / 要旨: Small, interfacial conformational changes occur in some Ag-Ab interactions. Using cryogenic electron microscopy (cryo-EM), we have demonstrated such changes in a major antigenic site of a poliovirus ...Small, interfacial conformational changes occur in some Ag-Ab interactions. Using cryogenic electron microscopy (cryo-EM), we have demonstrated such changes in a major antigenic site of a poliovirus capsid protein. During cell entry, native human poliovirus (160S particle) converts to a cell entry intermediate (135S particle) and later to an RNA-released (80S) particle. By mixing particles with Fabs of the neutralizing C3 mAb, we labeled the external loop connecting the B and C β-strands (BC loop) of the capsid protein VP1 (residues 95-105) in the 160S and 135S states. We then determined three-dimensional structures by cryo-EM and enhanced their interpretability by fitting high-resolution coordinates of C3 Fab and the capsid proteins into the density maps. Binding of C3 to either 160S or 135S particles caused residues of the BC loop, located on the tip of a prominent peak known as the "mesa," to move by an estimated 5 Å. C3 Abs are neutralizing and can bind bivalently. The orientation of the bound Fabs in our reconstructions suggests that C3 neutralizes poliovirus by binding two adjacent BC loops on the same mesa and inhibiting conformational changes in the viral capsid. | ||||||
履歴 |
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Remark 650 | HELIX DETERMINATION METHOD: AUTHOR DETERMINED | ||||||
Remark 700 | SHEET DETERMINATION METHOD: AUTHOR DETERMINED |
-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 | 3j3p.cif.gz | 57.2 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb3j3p.ent.gz | 28.8 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 3j3p.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 | 3j3p_validation.pdf.gz | 868.2 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 3j3p_full_validation.pdf.gz | 867.7 KB | 表示 | |
XML形式データ | 3j3p_validation.xml.gz | 20.8 KB | 表示 | |
CIF形式データ | 3j3p_validation.cif.gz | 30.2 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/j3/3j3p ftp://data.pdbj.org/pub/pdb/validation_reports/j3/3j3p | 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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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
#1: 抗体 | 分子量: 24080.750 Da / 分子数: 1 / 断片: Fab / 由来タイプ: 天然 / 由来: (天然) Mus musculus (ハツカネズミ) |
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#2: 抗体 | 分子量: 23478.137 Da / 分子数: 1 / 断片: Fab / 由来タイプ: 天然 / 由来: (天然) Mus musculus (ハツカネズミ) / 参照: UniProt: P01865*PLUS |
#3: 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 (ポリオウイルス) / 株: Mahoney / 参照: UniProt: P03300 |
#4: 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 (ポリオウイルス) / 株: Mahoney / 参照: UniProt: P03300 |
#5: タンパク質 | 分子量: 26547.482 Da / 分子数: 1 / 断片: UNP residues 342-579 / 由来タイプ: 天然 / 由来: (天然) Human poliovirus 1 (ポリオウイルス) / 株: Mahoney / 参照: UniProt: P03300 |
-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 | 名称: Poliovirus 135S particle and C3 Fab complex / タイプ: VIRUS / 詳細: 135S icosahedral particle with Fab |
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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: STRAIN / タイプ: VIRION |
天然宿主 | 生物種: Homo sapiens |
緩衝液 | 名称: 20 mM Tris, 2 mM CaCl2 / pH: 7.5 / 詳細: 20 mM Tris, 2 mM CaCl2 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: ETHANE 詳細: Vitrification carried out in ambient atmosphere. Ethane cooled by liquid nitrogen. 手法: Blotted manually before plunging |
-電子顕微鏡撮影
顕微鏡 | モデル: FEI/PHILIPS CM200FEG |
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電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 120 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 38000 X / 倍率(補正後): 38000 X / 最大 デフォーカス(公称値): 1630 nm / 最小 デフォーカス(公称値): 1120 nm / Cs: 2 mm / 非点収差: Bsoft / カメラ長: 0 mm |
試料ホルダ | 試料ホルダーモデル: GATAN LIQUID NITROGEN 資料ホルダタイプ: Side entry liquid nitrogen-cooled cryo specimen holder |
撮影 | 電子線照射量: 14 e/Å2 / フィルム・検出器のモデル: KODAK SO-163 FILM |
画像スキャン | デジタル画像の数: 4 |
放射 | プロトコル: SINGLE WAVELENGTH / 単色(M)・ラウエ(L): M / 散乱光タイプ: x-ray |
放射波長 | 相対比: 1 |
-解析
EMソフトウェア |
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CTF補正 | 詳細: CTF and decay correction of each particle | ||||||||||||||||||||||||||||||
対称性 | 点対称性: I (正20面体型対称) | ||||||||||||||||||||||||||||||
3次元再構成 | 手法: Fourier Bessel / 解像度: 9.1 Å / 解像度の算出法: FSC 0.5 CUT-OFF / 粒子像の数: 9810 / ピクセルサイズ(公称値): 1.84 Å / ピクセルサイズ(実測値): 1.84 Å 詳細: Reconstruction computed from focal pairs. Pairs not summed for reconstruction calculation. 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||
原子モデル構築 |
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原子モデル構築 | Source name: PDB / タイプ: experimental model
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精密化ステップ | サイクル: LAST
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