A novel amino acid substitution at the receptor-binding site on the hemagglutinin of H3N2 influenza A viruses isolated from 6 cases with acute encephalopathy during the 1997–1998 season in Tokyo

A novel amino acid substitution at the receptor-binding site on the hemagglutinin of H3N2... We analyzed the hemagglutinin (HA) genes of influenza A viruses consisting of 6 strains isolated from cerebrospinal fluids of patients with encephalopathy and 3 isolates from throat washes of patients without central nervous system symptoms during the 1997–1998 season in Tokyo. Aligned 9 amino acid sequences showed 7 common substitutions compared with A/Wuhan/359/95 (vaccine strain used in the season in Japan), which were allocated to three different antigenic sites on the H3 HA molecule. It is noted that a novel substitution at the receptor-binding site (Tyr-137 to Phe) was found exclusively in the isolates from the patients with encephalopathy. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

A novel amino acid substitution at the receptor-binding site on the hemagglutinin of H3N2 influenza A viruses isolated from 6 cases with acute encephalopathy during the 1997–1998 season in Tokyo

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Publisher
Springer Journals
Copyright
Copyright © Wien by 1999 Springer-Verlag/
Subject
Legacy
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s007050050491
Publisher site
See Article on Publisher Site

Abstract

We analyzed the hemagglutinin (HA) genes of influenza A viruses consisting of 6 strains isolated from cerebrospinal fluids of patients with encephalopathy and 3 isolates from throat washes of patients without central nervous system symptoms during the 1997–1998 season in Tokyo. Aligned 9 amino acid sequences showed 7 common substitutions compared with A/Wuhan/359/95 (vaccine strain used in the season in Japan), which were allocated to three different antigenic sites on the H3 HA molecule. It is noted that a novel substitution at the receptor-binding site (Tyr-137 to Phe) was found exclusively in the isolates from the patients with encephalopathy.

Journal

Archives of VirologySpringer Journals

Published: Jan 1, 1999

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