1A9R: Bovine Purine Nucleoside Phosphorylase Complexed With Hypoxa Sulfate
reference: Calf spleen purine nucleoside phosphorylase complexed with substrates and substrate analogues., Mao C, Cook WJ, Zhou M, Federov AA, Almo SC, Ealick SE, Biochemistry 1998 May 19;37(20):7135-46. PMID: 9585525

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