| Literature DB >> 26378170 |
Sjouke Van Poucke1, Jennifer Doedt2, Jan Baumann2, Yu Qiu1, Tatyana Matrosovich2, Hans-Dieter Klenk2, Kristien Van Reeth3, Mikhail Matrosovich4.
Abstract
Hemagglutinin (HA) of H3N2/1968 pandemic influenza viruses differs from the putative avian precursor by seven amino acid substitutions. Substitutions Q226L and G228S are known to be essential for adaptation of avian HA to mammals. We found that introduction of avian-virus-like amino acids at five other HA positions (positions 62, 81, 92, 144, and 193) of A/Hong Kong/1/1968 virus decreased viral replication in human cells and transmission in pigs. Thus, substitutions at some of these positions facilitated emergence of the pandemic virus.Entities:
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Year: 2015 PMID: 26378170 PMCID: PMC4645308 DOI: 10.1128/JVI.01292-15
Source DB: PubMed Journal: J Virol ISSN: 0022-538X Impact factor: 5.103