1G2O:
reference: Structures of purine nucleoside phosphorylase from Mycobacterium tuberculosis in complexes with immucillin-H and its pieces., Shi W, Basso LA, Santos DS, Tyler PC, Furneaux RH, Blanchard JS, Almo SC, Schramm VL, Biochemistry 2001 Jul 27;40(28):8204-15. PMID: 11444966

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