- EMDB-3138: Multiple capsid-stabilizing protein-RNA and protein-protein inter... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-3138
タイトル
Multiple capsid-stabilizing protein-RNA and protein-protein interactions revealed in a high-resolution structure of an emerging picornavirus causing neonatal sepsis
マップデータ
Reconstruction of human parechovirus 3 in complex with Fab AT12-015.
試料
試料: Fab fragment of Mab AT12-015 to Human Parechovirus 3
ウイルス: Human parechovirus 3 (ウイルス)
タンパク質・ペプチド: human monoclonal antibody AT12-015
キーワード
picornavirus / parechovirus / human parechovirus 3 / HPeV3 / neonatal sepsis / cryoEM / image processing / single particle anaylsis / Fab AT12-015 / HPeV3-Fab AT12-015
ジャーナル: Nat Commun / 年: 2016 タイトル: Multiple capsid-stabilizing interactions revealed in a high-resolution structure of an emerging picornavirus causing neonatal sepsis. 著者: Shabih Shakeel / Brenda M Westerhuis / Ausra Domanska / Roman I Koning / Rishi Matadeen / Abraham J Koster / Arjen Q Bakker / Tim Beaumont / Katja C Wolthers / Sarah J Butcher / 要旨: The poorly studied picornavirus, human parechovirus 3 (HPeV3) causes neonatal sepsis with no therapies available. Our 4.3-Å resolution structure of HPeV3 on its own and at 15 Å resolution in ...The poorly studied picornavirus, human parechovirus 3 (HPeV3) causes neonatal sepsis with no therapies available. Our 4.3-Å resolution structure of HPeV3 on its own and at 15 Å resolution in complex with human monoclonal antibody Fabs demonstrates the expected picornavirus capsid structure with three distinct features. First, 25% of the HPeV3 RNA genome in 60 sites is highly ordered as confirmed by asymmetric reconstruction, and interacts with conserved regions of the capsid proteins VP1 and VP3. Second, the VP0 N terminus stabilizes the capsid inner surface, in contrast to other picornaviruses where on expulsion as VP4, it forms an RNA translocation channel. Last, VP1's hydrophobic pocket, the binding site for the antipicornaviral drug, pleconaril, is blocked and thus inappropriate for antiviral development. Together, these results suggest a direction for development of neutralizing antibodies, antiviral drugs based on targeting the RNA-protein interactions and dissection of virus assembly on the basis of RNA nucleation.
全体 : Fab fragment of Mab AT12-015 to Human Parechovirus 3
全体
名称: Fab fragment of Mab AT12-015 to Human Parechovirus 3
要素
試料: Fab fragment of Mab AT12-015 to Human Parechovirus 3
ウイルス: Human parechovirus 3 (ウイルス)
タンパク質・ペプチド: human monoclonal antibody AT12-015
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超分子 #1000: Fab fragment of Mab AT12-015 to Human Parechovirus 3
超分子
名称: Fab fragment of Mab AT12-015 to Human Parechovirus 3 タイプ: sample / ID: 1000 / 詳細: The sample was monodisperse 集合状態: icosahedrally-symmetric virus with 60 copies each of VP0, VP3 and VP1 in complex with 60 copies of Fab AT12-015 Number unique components: 2
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超分子 #1: Human parechovirus 3
超分子
名称: Human parechovirus 3 / タイプ: virus / ID: 1 / Name.synonym: HPeV3 / NCBI-ID: 195055 / 生物種: Human parechovirus 3 / ウイルスタイプ: VIRION / ウイルス・単離状態: OTHER / ウイルス・エンベロープ: No / ウイルス・中空状態: No / Syn species name: HPeV3
宿主
生物種: Homo sapiens (ヒト) / 別称: VERTEBRATES
Host system
生物種: Chlorocebus aethiops (ミドリザル) / 組換細胞: Vero
ウイルス殻
Shell ID: 1 / 直径: 280 Å / T番号(三角分割数): 1
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分子 #1: human monoclonal antibody AT12-015
分子
名称: human monoclonal antibody AT12-015 / タイプ: protein_or_peptide / ID: 1 / Name.synonym: mAb AT12-015 詳細: Fab fragments of human monoclonal antibody AT12-015. コピー数: 60 / 組換発現: Yes
由来(天然)
生物種: Homo sapiens (ヒト) / 別称: Human
組換発現
生物種: Homo sapiens (ヒト) / 組換細胞: HEK293
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実験情報
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構造解析
手法
ネガティブ染色法, クライオ電子顕微鏡法
解析
単粒子再構成法
試料の集合状態
particle
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試料調製
濃度
1 mg/mL
緩衝液
pH: 7.5 / 詳細: 10 mM Tris-HCL, 150 mM NaCl, 1 mM MgCl2
染色
タイプ: NEGATIVE / 詳細: Unstained
グリッド
詳細: Holey carbon copper grids with ultrathin carbon support from TED PELLA.