1HA0: Hemagglutinin Precursor Ha0
reference: Structure of the hemagglutinin precursor cleavage site, a determinant of influenza pathogenicity and the origin of the labile conformation., Chen J, Lee KH, Steinhauer DA, Stevens DJ, Skehel JJ, Wiley DC, Cell 1998 Oct 30;95(3):409-17. PMID: 9814710

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