期刊
NATURE STRUCTURAL & MOLECULAR BIOLOGY
卷 19, 期 4, 页码 424-429出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/nsmb.2255
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资金
- National Major Project of Infectious Disease
- Ministry of Science and the Technology [2007CB914304]
- UK Medical Research Council
- Wellcome Trust
- Department for Environment, Food and Rural Affairs (DEFRA, UK)
- MRC [G0500365, G0600025, G0200504, G19/3] Funding Source: UKRI
- Medical Research Council [G0200504, G19/3, G0600025, G1100525, G0500365] Funding Source: researchfish
Enterovirus 71 (EV71) is a major agent of hand, foot and mouth disease in children that can cause severe central nervous system disease and death. No vaccine or antiviral therapy is available. High-resolution structural analysis of the mature virus and natural empty particles shows that the mature virus is structurally similar to other enteroviruses. In contrast, the empty particles are markedly expanded and resemble elusive enterovirus-uncoating intermediates not previously characterized in atomic detail. Hydrophobic pockets in the EV71 capsid are collapsed in this expanded particle, providing a detailed explanation of the mechanism for receptor-binding triggered virus uncoating. These structures provide a model for enterovirus uncoating in which the VP1 GH loop acts as an adaptor-sensor for cellular receptor attachment, converting heterologous inputs to a generic uncoating mechanism, highlighting new opportunities for therapeutic intervention.
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