ジャーナル: J Virol / 年: 2013 タイトル: A strain-specific epitope of enterovirus 71 identified by cryo-electron microscopy of the complex with fab from neutralizing antibody. 著者: Hyunwook Lee / Javier O Cifuente / Robert E Ashley / James F Conway / Alexander M Makhov / Yoshio Tano / Hiroyuki Shimizu / Yorihiro Nishimura / Susan Hafenstein / 要旨: Enterovirus 71 (EV71) is a picornavirus that causes outbreaks of hand, foot, and mouth disease (HFMD), primarily in the Asia-Pacific area. Unlike coxsackievirus A16, which also causes HFMD, EV71 ...Enterovirus 71 (EV71) is a picornavirus that causes outbreaks of hand, foot, and mouth disease (HFMD), primarily in the Asia-Pacific area. Unlike coxsackievirus A16, which also causes HFMD, EV71 induces severe neuropathology leading to high fatalities, especially among children under the age of 6 years. Currently, no established vaccines or treatments are available against EV71 infection. The monoclonal antibody MA28-7 neutralizes only specific strains of EV71 that have a conserved glycine at amino acid VP1-145, a surface-exposed residue that maps to the 5-fold vertex and that has been implicated in receptor binding. The cryo-electron microscopy structure of a complex between EV71 and the Fab fragment of MA28-7 shows that only one Fab fragment occupies each 5-fold vertex. A positively charged patch, which has also been implicated in receptor binding, lies within the Fab footprint. We identify the strain-specific epitope of EV71 and discuss the possible neutralization mechanisms of the antibody.
履歴
登録
2013年5月21日
登録サイト: RCSB / 処理サイト: RCSB
改定 1.0
2013年8月28日
Provider: repository / タイプ: Initial release
改定 1.1
2013年11月6日
Group: Database references
改定 1.2
2014年4月9日
Group: Source and taxonomy
改定 1.3
2018年7月18日
Group: Data collection / カテゴリ: em_software / Item: _em_software.image_processing_id
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
相対比: 1
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解析
EMソフトウェア
ID
名称
バージョン
カテゴリ
1
UCSF Chimera
モデルフィッティング
2
EMAN
2
3次元再構成
CTF補正
詳細: Each
対称性
点対称性: C1 (非対称)
3次元再構成
手法: Cross correlation coefficient / 解像度: 23.4 Å / 解像度の算出法: FSC 0.5 CUT-OFF / 粒子像の数: 27026 / ピクセルサイズ(公称値): 1.23 Å / ピクセルサイズ(実測値): 1.23 Å 詳細: The breaksym option in EMAN2 was used to search for the icosahedrally-related orientations. (Single particle details: Selected particles were low-pass filtered at 10 Angstrom. Asymmetric ...詳細: The breaksym option in EMAN2 was used to search for the icosahedrally-related orientations. (Single particle details: Selected particles were low-pass filtered at 10 Angstrom. Asymmetric reconstruction was performed with the breaksym option in EMAN2.) (Single particle--Applied symmetry: C1) クラス平均像の数: 2300 / 対称性のタイプ: POINT
原子モデル構築
プロトコル: RIGID BODY FIT / 空間: REAL / Target criteria: correlation coefficient 詳細: REFINEMENT PROTOCOL--rigid body DETAILS--The Fab structure was fitted manually, then refined in Chimera.