4nsn is a 3 chain structure with sequence from Porg3. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
[B2RKN6_PORG3] The purine nucleoside phosphorylases catalyze the phosphorolytic breakdown of the N-glycosidic bond in the beta-(deoxy)ribonucleoside molecules, with the formation of the corresponding free purine bases and pentose-1-phosphate (By similarity).[PIRNR:PIRNR000477]
