3FZ0:
reference: Structure and mechanism of the 6-oxopurine nucleosidase from Trypanosoma brucei brucei., Vandemeulebroucke A, Minici C, Bruno I, Muzzolini L, Tornaghi P, Parkin DW, Versees W, Steyaert J, Degano M, Biochemistry. 2010 Oct 19;49(41):8999-9010. PMID: 20825170

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