Purine nucleoside phosphorylase

From Proteopedia

spinqualitylabelsall models Human purine nucleoside phosphorylase complex with guanine and sulfate (PDB entry 1v2h) Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image Contents 1 Function 2 Disease 3 Structural highlights 4 3D structures of purine nucleoside phosphorylase Function Purine nucleoside phosphorylase (PNP) cleaves nucleosides by phosphorylating ribose to produce ribose-1-phosphate. PNP metabolizes adenosine, inosine and guanosine[1]. PNP metabolizes the waste molecules deoxyinosine and deoxyguanosine which are formed when DNA breaks down. Disease PNP deficiency results in severe combined immunodeficiency[2]. Structural highlights . The ribose binding site is composed of mostly hydrophobic side chains[3]. . 3D structures of purine nucleoside phosphorylase Purine nucleoside phosphorylase 3D structures

References

1. ↑ Bzowska A, Kulikowska E, Shugar D. Purine nucleoside phosphorylases: properties, functions, and clinical aspects. Pharmacol Ther. 2000 Dec;88(3):349-425. PMID:11337031
2. ↑ Markert ML. Purine nucleoside phosphorylase deficiency. Immunodefic Rev. 1991;3(1):45-81. PMID:1931007
3. ↑ de Azevedo WF Jr, Canduri F, dos Santos DM, Pereira JH, Bertacine Dias MV, Silva RG, Mendes MA, Basso LA, Palma MS, Santos DS. Crystal structure of human PNP complexed with guanine. Biochem Biophys Res Commun. 2003 Dec 19;312(3):767-72. PMID:14680831 doi:10.1016/j.bbrc.2003.10.190