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  • Title: Crystal structure of human PNP complexed with hypoxanthine and sulfate ion.
    Author: Canduri F, Fadel V, Dias MV, Basso LA, Palma MS, Santos DS, de Azevedo WF.
    Journal: Biochem Biophys Res Commun; 2005 Jan 14; 326(2):335-8. PubMed ID: 15582582.
    Abstract:
    Purine nucleoside phosphorylase (PNP) is a ubiquitous enzyme, which plays a key role in the purine salvage pathway, and PNP deficiency in humans leads to an impairment of T-cell function, usually with no apparent effects on B-cell function. Human PNP has been submitted to intensive structure-based design of inhibitors, most of them using low-resolution structures of human PNP. Here we report the crystal structure of human PNP in complex with hypoxanthine, refined to 2.6A resolution. The intermolecular interaction between ligand and PNP is discussed.
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