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-Structure paper
Title | Structural and functional analysis of protective antibodies targeting the threefold plateau of enterovirus 71. |
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Journal, issue, pages | Nat Commun, Vol. 11, Issue 1, Page 5253, Year 2020 |
Publish date | Oct 16, 2020 |
Authors | Kuan-Ying A Huang / Daming Zhou / Elizabeth E Fry / Abhay Kotecha / Peng-Nien Huang / Shu-Li Yang / Kuo-Chien Tsao / Yhu-Chering Huang / Tzou-Yien Lin / Jingshan Ren / David I Stuart / |
PubMed Abstract | Enterovirus 71 (EV71)-neutralizing antibodies correlate with protection and have potential as therapeutic agents. We isolate and characterize a panel of plasmablast-derived monoclonal antibodies from ...Enterovirus 71 (EV71)-neutralizing antibodies correlate with protection and have potential as therapeutic agents. We isolate and characterize a panel of plasmablast-derived monoclonal antibodies from an infected child whose antibody response focuses on the plateau epitope near the icosahedral 3-fold axes. Eight of a total of 19 antibodies target this epitope and three of these potently neutralize the virus. Representative neutralizing antibodies 38-1-10A and 38-3-11A both confer effective protection against lethal EV71 challenge in hSCARB2-transgenic mice. The cryo-electron microscopy structures of the EV71 virion in complex with Fab fragments of these potent and protective antibodies reveal the details of a conserved epitope formed by residues in the BC and HI loops of VP2 and the BC and HI loops of VP3 spanning the region around the 3-fold axis. Remarkably, the two antibodies interact with the epitope in quite distinct ways. These plateau-binding antibodies provide templates for promising candidate therapeutics. |
External links | Nat Commun / PubMed:33067459 / PubMed Central |
Methods | EM (single particle) / X-ray diffraction |
Resolution | 2.7 - 2.8 Å |
Structure data | EMDB-11061, PDB-6z3p: EMDB-11062, PDB-6z3q: PDB-6z3k: |
Chemicals | ChemComp-EDO: ChemComp-HOH: ChemComp-SPH: |
Source |
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Keywords | IMMUNE SYSTEM / EV71 / antibody 38-3-11A / antibody 38-1-10A / EV71-Fab complex / VIRUS |