- EMDB-6926: CryoEM structure of mature dengue virus-like particle at 13 Angst... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-6926
タイトル
CryoEM structure of mature dengue virus-like particle at 13 Angstroms resolution
マップデータ
The single particle cryo-EM reconstruction of highly matured virus-like particles derived from DENV serotype 2 (mD2VLP). The images analyses were performed using EMAN2.
ジャーナル: Elife / 年: 2018 タイトル: Epitope resurfacing on dengue virus-like particle vaccine preparation to induce broad neutralizing antibody. 著者: Wen-Fan Shen / Jedhan Ucat Galula / Jyung-Hurng Liu / Mei-Ying Liao / Cheng-Hao Huang / Yu-Chun Wang / Han-Chung Wu / Jian-Jong Liang / Yi-Ling Lin / Matthew T Whitney / Gwong-Jen J Chang / ...著者: Wen-Fan Shen / Jedhan Ucat Galula / Jyung-Hurng Liu / Mei-Ying Liao / Cheng-Hao Huang / Yu-Chun Wang / Han-Chung Wu / Jian-Jong Liang / Yi-Ling Lin / Matthew T Whitney / Gwong-Jen J Chang / Sheng-Ren Chen / Shang-Rung Wu / Day-Yu Chao / 要旨: Dengue fever is caused by four different serotypes of dengue virus (DENV) which is the leading cause of worldwide arboviral diseases in humans. Virus-like particles (VLPs) containing flavivirus prM/E ...Dengue fever is caused by four different serotypes of dengue virus (DENV) which is the leading cause of worldwide arboviral diseases in humans. Virus-like particles (VLPs) containing flavivirus prM/E proteins have been demonstrated to be a potential vaccine candidate; however, the structure of dengue VLP is poorly understood. Herein VLP derived from DENV serotype-2 were engineered becoming highly matured (mD2VLP) and showed variable size distribution with diameter of ~31 nm forming the major population under cryo-electron microscopy examination. Furthermore, mD2VLP particles of 31 nm diameter possess a T = 1 icosahedral symmetry with a groove located within the E-protein dimers near the 2-fold vertices that exposed highly overlapping, cryptic neutralizing epitopes. Mice vaccinated with mD2VLP generated higher cross-reactive (CR) neutralization antibodies (NtAbs) and were fully protected against all 4 serotypes of DENV. Our results highlight the potential of 'epitope-resurfaced' mature-form D2VLPs in inducing quaternary structure-recognizing broad CR NtAbs to guide future dengue vaccine design.
ダウンロード / ファイル: emd_6926.map.gz / 形式: CCP4 / 大きさ: 4 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
注釈
The single particle cryo-EM reconstruction of highly matured virus-like particles derived from DENV serotype 2 (mD2VLP). The images analyses were performed using EMAN2.
A: 512.0 Å / B: 512.0 Å / C: 256.0 Å α=β=γ: 90.0 °
CCP4マップ ヘッダ情報:
mode
Image stored as Reals
Å/pix. X/Y/Z
4
4
4
M x/y/z
128
128
64
origin x/y/z
0.000
0.000
0.000
length x/y/z
512.000
512.000
256.000
α/β/γ
90.000
90.000
90.000
start NX/NY/NZ
0
0
0
NX/NY/NZ
240
240
240
MAP C/R/S
1
2
3
start NC/NR/NS
0
0
0
NC/NR/NS
128
128
64
D min/max/mean
0.000
127.540
50.500
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添付データ
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試料の構成要素
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全体 : dengue virus serotype 2
全体
名称: dengue virus serotype 2 (デング熱ウイルス)
要素
ウイルス: dengue virus serotype 2 (デング熱ウイルス)
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超分子 #1: dengue virus serotype 2
超分子
名称: dengue virus serotype 2 / タイプ: virus / ID: 1 / 親要素: 0 / 含まれる分子: #1 詳細: The particles were produced from recombinant plasmid pVD2, expressing the prM, 80% and 20% COOH terminus of the envelope proteins of DENV-2 (Asian 1 genotype, strain 16681) and Japanese ...詳細: The particles were produced from recombinant plasmid pVD2, expressing the prM, 80% and 20% COOH terminus of the envelope proteins of DENV-2 (Asian 1 genotype, strain 16681) and Japanese encephalitis virus (strain SA14-14-2), respectively NCBI-ID: 11060 / 生物種: dengue virus serotype 2 / Sci species strain: 16681 / ウイルスタイプ: VIRUS-LIKE PARTICLE / ウイルス・単離状態: SEROTYPE / ウイルス・エンベロープ: Yes / ウイルス・中空状態: Yes
宿主
生物種: Aedes aegypti mosquitoes
Host system
生物種: Chlorocebus aethiops (ミドリザル)
ウイルス殻
Shell ID: 1 / 名称: glycoprotein E and M / 直径: 60.0 Å / T番号(三角分割数): 3
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実験情報
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構造解析
手法
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
0.1 mg/mL
緩衝液
pH: 7.4 構成要素:
濃度
式
50.0 mM
Tris-HCl
100.0 mM
NaCl
0.1 mM
EDTA
詳細: Solutions were made fresh to avoid contamination