https://www.ncbi.nlm.nih.gov/Structure/pdb/2A0Y
2A0Y: Structure of human purine nucleoside phosphorylase H257D mutant
Purine nucleoside phosphorylase7-[[(3R,4R)-3-(hydroxymethyl)-4-oxidanyl-pyrrolidin-1-ium-1-yl]methyl]-3,5-dihydropyrrolo[3,2-d]pyrimidin-4-oneSULFATE ION
structurehumanpurinenucleosidemutant