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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: 4l3b | ||||||
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タイトル | X-ray structure of the HRV2 A particle uncoating intermediate | ||||||
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![]() | VIRUS / HRV2 capsid | ||||||
機能・相同性 | ![]() symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of RIG-I activity / ribonucleoside triphosphate phosphatase 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 / nucleoside-triphosphate phosphatase / channel activity ...symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of RIG-I activity / ribonucleoside triphosphate phosphatase 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 / nucleoside-triphosphate phosphatase / channel activity / monoatomic ion transmembrane transport / DNA replication / RNA helicase activity / endocytosis involved in viral 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 / zinc ion binding / ATP binding / membrane 類似検索 - 分子機能 | ||||||
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手法 | ![]() ![]() ![]() | ||||||
![]() | Vives-Adrian, L. / Querol-Audi, J. / Garriga, D. / Pous, J. / Verdaguer, N. | ||||||
![]() | ![]() タイトル: Uncoating of common cold virus is preceded by RNA switching as determined by X-ray and cryo-EM analyses of the subviral A-particle. 著者: Angela Pickl-Herk / Daniel Luque / Laia Vives-Adrián / Jordi Querol-Audí / Damià Garriga / Benes L Trus / Nuria Verdaguer / Dieter Blaas / José R Castón / ![]() 要旨: During infection, viruses undergo conformational changes that lead to delivery of their genome into host cytosol. In human rhinovirus A2, this conversion is triggered by exposure to acid pH in the ...During infection, viruses undergo conformational changes that lead to delivery of their genome into host cytosol. In human rhinovirus A2, this conversion is triggered by exposure to acid pH in the endosome. The first subviral intermediate, the A-particle, is expanded and has lost the internal viral protein 4 (VP4), but retains its RNA genome. The nucleic acid is subsequently released, presumably through one of the large pores that open at the icosahedral twofold axes, and is transferred along a conduit in the endosomal membrane; the remaining empty capsids, termed B-particles, are shuttled to lysosomes for degradation. Previous structural analyses revealed important differences between the native protein shell and the empty capsid. Nonetheless, little is known of A-particle architecture or conformation of the RNA core. Using 3D cryo-electron microscopy and X-ray crystallography, we found notable changes in RNA-protein contacts during conversion of native virus into the A-particle uncoating intermediate. In the native virion, we confirmed interaction of nucleotide(s) with Trp(38) of VP2 and identified additional contacts with the VP1 N terminus. Study of A-particle structure showed that the VP2 contact is maintained, that VP1 interactions are lost after exit of the VP1 N-terminal extension, and that the RNA also interacts with residues of the VP3 N terminus at the fivefold axis. These associations lead to formation of a well-ordered RNA layer beneath the protein shell, suggesting that these interactions guide ordered RNA egress. | ||||||
履歴 |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 154 KB | 表示 | ![]() |
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PDB形式 | ![]() | 120 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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単位格子 |
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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)) | ||||||||||||||||||||||||||||||||||||||||||||||||
非結晶学的対称性 (NCS) | NCS oper:
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要素
#1: タンパク質 | 分子量: 32924.797 Da / 分子数: 1 / 断片: UNP residues 568-856 / 由来タイプ: 天然 由来: (天然) ![]() 参照: UniProt: P04936 |
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#2: タンパク質 | 分子量: 29009.588 Da / 分子数: 1 / 断片: UNP residues 70-330 / 由来タイプ: 天然 由来: (天然) ![]() 参照: UniProt: P04936 |
#3: タンパク質 | 分子量: 26107.793 Da / 分子数: 1 / 断片: UNP residues 331-567 / 由来タイプ: 天然 由来: (天然) ![]() 参照: UniProt: P04936 |
Has protein modification | Y |
-実験情報
-実験
実験 | 手法: ![]() |
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試料調製
結晶 | マシュー密度: 4.09 Å3/Da / 溶媒含有率: 69.89 % |
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結晶化 | 温度: 293 K / 手法: 蒸気拡散法, ハンギングドロップ法 / pH: 7.5 詳細: 0.5 M ammonium sulfate, 1 M sodium/potassium phosphate, 5% glycerol, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K |
-データ収集
回折 | 平均測定温度: 100 K |
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放射光源 | 由来: ![]() ![]() ![]() |
検出器 | タイプ: PSI PILATUS 6M / 検出器: PIXEL / 日付: 2012年5月4日 |
放射 | モノクロメーター: double crystal Si(111) / 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 | 波長: 1 Å / 相対比: 1 |
反射 | 解像度: 4.5→262.63 Å / Num. obs: 15750 / % possible obs: 12.5 % / Observed criterion σ(F): 2 / Observed criterion σ(I): 1 / Rmerge(I) obs: 0.163 / Rsym value: 0.163 / Net I/σ(I): 4.4 |
反射 シェル | 解像度: 4.5→4.74 Å / % possible all: 12.5 |
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解析
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精密化 | 構造決定の手法: ![]() 開始モデル: PDB ENTRY 3TN9 解像度: 6.5→121.39 Å / σ(F): 2 / 立体化学のターゲット値: Engh & Huber
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精密化ステップ | サイクル: LAST / 解像度: 6.5→121.39 Å
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