1Z50:
reference: Structural studies of the parainfluenza virus 5 hemagglutinin-neuraminidase tetramer in complex with its receptor, sialyllactose., Yuan P, Thompson TB, Wurzburg BA, Paterson RG, Lamb RA, Jardetzky TS, Structure (Camb) 2005 May;13(5):803-15. PMID: 15893670

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