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Publication Abstract from PubMed

Canine parvovirus (CPV-2) emerged in 1978 and spread worldwide within two years. Subsequently, CPV-2 was completely replaced by the variant CPV-2a, which is characterized by four specific capsid (VP2) mutations. The X-ray crystal structure of the CPV-2a capsid shows that each mutation confers small local changes. The loss of a hydrogen bond and introduction of a glycine residue likely introduce flexibility to sites that control interactions with the host receptor, antibodies, and sialic acids.

Global displacement of canine parvovirus by a host-adapted variant: A structural comparison between pandemic viruses with distinct host ranges.,Organtini LJ, Allison AB, Lukk T, Parrish CR, Hafenstein S J Virol. 2014 Nov 19. pii: JVI.02611-14. PMID:25410876^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.