3CYE:
reference: Structure determination of the 1918 H1N1 neuraminidase from a crystal with lattice-translocation defects., Zhu X, Xu X, Wilson IA, Acta Crystallogr D Biol Crystallogr. 2008 Aug;64(Pt 8):843-50. Epub 2008, Jul 17. PMID: 18645233

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