3ONV:
reference: Validation of the catalytic mechanism of Escherichiacoli purine nucleoside phosphorylase by structural and kinetic studies., Mikleusevic G, Stefanic Z, Narczyk M, Wielgus-Kutrowska B, Bzowska A, Luic M, Biochimie. 2011 Jun 13. PMID: 21672603

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