2XZJ:
reference: The Aspergillus fumigatus sialidase is a KDNase: structural and mechanistic insights., Telford JC, Yeung JH, Xu G, Kiefel MJ, Watts AG, Hader S, Chan J, Bennet AJ, Moore MM, Taylor GL, J Biol Chem. 2011 Jan 19. PMID: 21247893

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