Structures of receptor complexes of a North American H7N2 influenza hemagglutinin with a loop deletion in the receptor binding site.

Abstract excerpt

Human infections with subtype H7 avian influenza viruses have been reported as early as 1979. In 1996, a genetically stable 24-nucleotide deletion emerged in North American H7 influenza virus hemagglutinins, resulting in an eight amino acid deletion in the receptor-binding site. The continuous circulation of these viruses in live bird markets, as well as its documented ability to infect humans, raises the...

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