Foot-and-mouth disease virus (FMDV), a non-enveloped picornavirus, is sensitive to acidic conditions. At pH values below 7 the icosahedral virus capsid, formed from 60 copies of a protomer containing four polypeptides (VP1 to 4), dissociates into 12 pentamers, releasing the viral RNA. Evidence suggests that this acid lability may assist FMDV cell entry via… (More)
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