+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7dwt | ||||||||||||
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タイトル | Cryo-EM structure of Dengue virus serotype 1 strain WestPac 74 in complex with human antibody 1C19 Fab at 37 deg C (Class 1 particle) | ||||||||||||
要素 |
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キーワード | VIRUS/IMMUNE SYSTEM / dengue virus / human antibody / dengue-Fab structure / VIRUS / VIRUS-IMMUNE SYSTEM complex | ||||||||||||
機能・相同性 | 機能・相同性情報 flavivirin / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of host TYK2 activity / host cell mitochondrion / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of STAT2 activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MAVS activity / double-stranded RNA binding / nucleoside-triphosphate phosphatase / channel activity / viral capsid / monoatomic ion transmembrane transport ...flavivirin / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of host TYK2 activity / host cell mitochondrion / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of STAT2 activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MAVS activity / double-stranded RNA binding / nucleoside-triphosphate phosphatase / channel activity / viral capsid / monoatomic ion transmembrane transport / mRNA (guanine-N7)-methyltransferase / methyltransferase cap1 / clathrin-dependent endocytosis of virus by host cell / mRNA (nucleoside-2'-O-)-methyltransferase activity / mRNA 5'-cap (guanine-N7-)-methyltransferase activity / RNA helicase activity / host cell perinuclear region of cytoplasm / protein dimerization activity / host cell endoplasmic reticulum membrane / RNA helicase / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / induction by virus of host autophagy / RNA-directed RNA polymerase / viral RNA genome replication / serine-type endopeptidase activity / RNA-dependent RNA polymerase activity / virus-mediated perturbation of host defense response / fusion of virus membrane with host endosome membrane / viral envelope / host cell nucleus / virion attachment to host cell / structural molecule activity / virion membrane / ATP hydrolysis activity / proteolysis / extracellular region / ATP binding / membrane / metal ion binding 類似検索 - 分子機能 | ||||||||||||
生物種 | Dengue virus 1 (デング熱ウイルス) Homo sapiens (ヒト) | ||||||||||||
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: 19 Å | ||||||||||||
データ登録者 | Fibriansah, G. / Ng, T.S. / Kostyuchenko, V.A. / Shi, J. / Lok, S.M. | ||||||||||||
資金援助 | シンガポール, 米国, 3件
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引用 | ジャーナル: PLoS Pathog / 年: 2021 タイトル: Antibody affinity versus dengue morphology influences neutralization. 著者: Guntur Fibriansah / Elisa X Y Lim / Jan K Marzinek / Thiam-Seng Ng / Joanne L Tan / Roland G Huber / Xin-Ni Lim / Valerie S Y Chew / Victor A Kostyuchenko / Jian Shi / Ganesh S Anand / Peter ...著者: Guntur Fibriansah / Elisa X Y Lim / Jan K Marzinek / Thiam-Seng Ng / Joanne L Tan / Roland G Huber / Xin-Ni Lim / Valerie S Y Chew / Victor A Kostyuchenko / Jian Shi / Ganesh S Anand / Peter J Bond / James E Crowe / Shee-Mei Lok / 要旨: Different strains within a dengue serotype (DENV1-4) can have smooth, or "bumpy" surface morphologies with different antigenic characteristics at average body temperature (37°C). We determined the ...Different strains within a dengue serotype (DENV1-4) can have smooth, or "bumpy" surface morphologies with different antigenic characteristics at average body temperature (37°C). We determined the neutralizing properties of a serotype cross-reactive human monoclonal antibody (HMAb) 1C19 for strains with differing morphologies within the DENV1 and DENV2 serotypes. We mapped the 1C19 epitope to E protein domain II by hydrogen deuterium exchange mass spectrometry, cryoEM and molecular dynamics simulations, revealing that this epitope is likely partially hidden on the virus surface. We showed the antibody has high affinity for binding to recombinant DENV1 E proteins compared to those of DENV2, consistent with its strong neutralizing activities for all DENV1 strains tested regardless of their morphologies. This finding suggests that the antibody could out-compete E-to-E interaction for binding to its epitope. In contrast, for DENV2, HMAb 1C19 can only neutralize when the epitope becomes exposed on the bumpy-surfaced particle. Although HMAb 1C19 is not a suitable therapeutic candidate, this study with HMAb 1C19 shows the importance of choosing a high-affinity antibody that could neutralize diverse dengue virus morphologies for therapeutic purposes. | ||||||||||||
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 | 7dwt.cif.gz | 59 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7dwt.ent.gz | 32.6 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7dwt.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 | 7dwt_validation.pdf.gz | 789.8 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7dwt_full_validation.pdf.gz | 789.4 KB | 表示 | |
XML形式データ | 7dwt_validation.xml.gz | 24.4 KB | 表示 | |
CIF形式データ | 7dwt_validation.cif.gz | 35.5 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/dw/7dwt ftp://data.pdbj.org/pub/pdb/validation_reports/dw/7dwt | 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: タンパク質 | 分子量: 53910.871 Da / 分子数: 3 / 由来タイプ: 天然 / 由来: (天然) Dengue virus 1 (デング熱ウイルス) / 株: WestPac 74 / 参照: UniProt: P17763*PLUS #2: 抗体 | | 分子量: 13167.631 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) #3: 抗体 | | 分子量: 11584.849 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) |
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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 |
-試料調製
構成要素 |
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由来(天然) |
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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: YES / 単離: STRAIN / タイプ: VIRION | ||||||||||||||||||||||||||||
緩衝液 | pH: 8 詳細: NTE buffer (12 mM Tris-HCl pH 8.0, 120 mM NaCl and 1 mM EDTA) | ||||||||||||||||||||||||||||
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: The purified virus was incubated with Fab 1C19 at 37 deg C for 30 min with a molar ratio of one Fab for every E-protein and followed by incubation at 4 deg C for 2 h. | ||||||||||||||||||||||||||||
急速凍結 | 凍結剤: ETHANE |
-電子顕微鏡撮影
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: SPOT SCAN |
電子レンズ | モード: BRIGHT FIELD |
撮影 | 電子線照射量: 18 e/Å2 フィルム・検出器のモデル: FEI FALCON II (4k x 4k) |
-解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 4301 | ||||||||||||||||||||||||||||
対称性 | 点対称性: I (正20面体型対称) | ||||||||||||||||||||||||||||
3次元再構成 | 解像度: 19 Å / 解像度の算出法: FSC 0.5 CUT-OFF / 粒子像の数: 1116 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: RIGID BODY FIT | ||||||||||||||||||||||||||||
原子モデル構築 |
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