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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: PDB / ID: 3epf | ||||||
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タイトル | CryoEM structure of poliovirus receptor bound to poliovirus type 2 | ||||||
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![]() | VIRUS / CD155 structure Immunoglobulin Superfamily / poliovirus capsid jelly role / Cell adhesion / Cell membrane / Glycoprotein / Host-virus interaction / Immunoglobulin domain / Membrane / Receptor / Secreted / Transmembrane / VIRAL PROTEIN | ||||||
機能・相同性 | ![]() susceptibility to T cell mediated cytotoxicity / susceptibility to natural killer cell mediated cytotoxicity / Nectin/Necl trans heterodimerization / positive regulation of natural killer cell mediated cytotoxicity directed against tumor cell target / positive regulation of natural killer cell mediated cytotoxicity / negative regulation of natural killer cell mediated cytotoxicity / heterophilic cell-cell adhesion via plasma membrane cell adhesion molecules / natural killer cell mediated cytotoxicity / homophilic cell adhesion via plasma membrane adhesion molecules / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of RIG-I activity ...susceptibility to T cell mediated cytotoxicity / susceptibility to natural killer cell mediated cytotoxicity / Nectin/Necl trans heterodimerization / positive regulation of natural killer cell mediated cytotoxicity directed against tumor cell target / positive regulation of natural killer cell mediated cytotoxicity / negative regulation of natural killer cell mediated cytotoxicity / heterophilic cell-cell adhesion via plasma membrane cell adhesion molecules / natural killer cell mediated cytotoxicity / homophilic cell adhesion via plasma membrane adhesion molecules / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of RIG-I activity / cell adhesion molecule binding / receptor-mediated endocytosis of virus by host cell / 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 / ribonucleoside triphosphate phosphatase activity / adherens junction / 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 / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / signaling receptor activity / nucleoside-triphosphate phosphatase / virus receptor activity / channel activity / monoatomic ion transmembrane transport / DNA replication / RNA helicase activity / receptor ligand activity / symbiont-mediated activation of host autophagy / RNA-directed RNA polymerase / cysteine-type endopeptidase activity / viral RNA genome replication / focal adhesion / RNA-directed RNA polymerase activity / DNA-templated transcription / virion attachment to host cell / host cell nucleus / structural molecule activity / cell surface / proteolysis / extracellular space / RNA binding / zinc ion binding / ATP binding / membrane / plasma membrane / cytoplasm 類似検索 - 分子機能 | ||||||
生物種 | ![]() ![]() | ||||||
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 Å | ||||||
![]() | Zhang, P. / Mueller, S. / Morais, M.C. / Bator, C.M. / Bowman, V.D. / Hafenstein, S. / Wimmer, E. / Rossmann, M.G. | ||||||
![]() | ![]() タイトル: Crystal structure of CD155 and electron microscopic studies of its complexes with polioviruses. 著者: Ping Zhang / Steffen Mueller / Marc C Morais / Carol M Bator / Valorie D Bowman / Susan Hafenstein / Eckard Wimmer / Michael G Rossmann / ![]() 要旨: When poliovirus (PV) recognizes its receptor, CD155, the virus changes from a 160S to a 135S particle before releasing its genome into the cytoplasm. CD155 is a transmembrane protein with 3 Ig-like ...When poliovirus (PV) recognizes its receptor, CD155, the virus changes from a 160S to a 135S particle before releasing its genome into the cytoplasm. CD155 is a transmembrane protein with 3 Ig-like extracellular domains, D1-D3, where D1 is recognized by the virus. The crystal structure of D1D2 has been determined to 3.5-A resolution and fitted into approximately 8.5-A resolution cryoelectron microscopy reconstructions of the virus-receptor complexes for the 3 PV serotypes. These structures show that, compared with human rhinoviruses, the virus-receptor interactions for PVs have a greater dependence on hydrophobic interactions, as might be required for a virus that can inhabit environments of different pH. The pocket factor was shown to remain in the virus during the first recognition stage. The present structures, when combined with earlier mutational investigations, show that in the subsequent entry stage the receptor moves further into the canyon when at a physiological temperature, thereby expelling the pocket factor and separating the viral subunits to form 135S particles. These results provide a detailed analysis of how a nonenveloped virus can enter its host cell. | ||||||
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構造の表示
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構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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PDBx/mmCIF形式 | ![]() | 226.5 KB | 表示 | ![]() |
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PDB形式 | ![]() | 174.2 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
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アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
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リンク
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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)) |
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要素
-タンパク質 , 5種, 5分子 R1243
#1: タンパク質 | 分子量: 23330.514 Da / 分子数: 1 / 断片: Poliovirus receptor CD155 D1D2 / 変異: N105D, N120S, N188Q, N218Q, N237S / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
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#2: タンパク質 | 分子量: 30734.535 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 発現宿主: ![]() ![]() |
#3: タンパク質 | 分子量: 29045.814 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 発現宿主: ![]() ![]() |
#4: タンパク質 | 分子量: 7346.957 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 発現宿主: ![]() ![]() |
#5: タンパク質 | 分子量: 26115.852 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 発現宿主: ![]() ![]() |
-非ポリマー , 3種, 273分子 




#6: 化合物 | ChemComp-SC4 / |
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#7: 化合物 | ChemComp-MYR / |
#8: 水 | ChemComp-HOH / |
-詳細
Has protein modification | Y |
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-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 |
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試料調製
構成要素 |
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緩衝液 | pH: 7.5 / 詳細: 10mM Tris-HCl, 20mM NaCl | ||||||||||||||||
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 |
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電子顕微鏡撮影
顕微鏡 | モデル: FEI/PHILIPS CM300FEG/T |
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電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 47000 X / 最大 デフォーカス(公称値): 2745 nm / 最小 デフォーカス(公称値): 1236 nm |
撮影 | 電子線照射量: 20 e/Å2 / フィルム・検出器のモデル: KODAK SO-163 FILM |
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解析
EMソフトウェア | 名称: EMfit / カテゴリ: モデルフィッティング | ||||||||||||
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対称性 | 点対称性: I (正20面体型対称) | ||||||||||||
3次元再構成 | 解像度: 9 Å / ピクセルサイズ(公称値): 2.69 Å / ピクセルサイズ(実測値): 2.66 Å / 対称性のタイプ: POINT | ||||||||||||
原子モデル構築 | 空間: REAL | ||||||||||||
精密化ステップ | サイクル: LAST
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