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Hasan, S Saif; Miller, Andrew; Sapparapu, Gopal; Fernandez, Estefania; Klose, Thomas; Long, Feng; Fokine, Andrei; Porta, Jason C; Jiang, Wen; Diamond, Michael S; Crowe, Jr, James E; Kuhn, Richard J; Rossmann, Michael G
Nature communications, 03/2017, Letnik: 8, Številka: 1Journal Article
The recent Zika virus (ZIKV) epidemic has been linked to unusual and severe clinical manifestations including microcephaly in fetuses of infected pregnant women and Guillian-Barré syndrome in adults. Neutralizing antibodies present a possible therapeutic approach to prevent and control ZIKV infection. Here we present a 6.2 Å resolution three-dimensional cryo-electron microscopy (cryoEM) structure of an infectious ZIKV (strain H/PF/2013, French Polynesia) in complex with the Fab fragment of a highly therapeutic and neutralizing human monoclonal antibody, ZIKV-117. The antibody had been shown to prevent fetal infection and demise in mice. The structure shows that ZIKV-117 Fabs cross-link the monomers within the surface E glycoprotein dimers as well as between neighbouring dimers, thus preventing the reorganization of E protein monomers into fusogenic trimers in the acidic environment of endosomes.
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in: SICRIS
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