https://www.ncbi.nlm.nih.gov/Structure/pdb/3HVU
3HVU: 1.95 Angstrom Crystal Structure of Complex of Hypoxanthine-Guanine Phosphoribosyltransferase...
Hypoxanthine phosphoribosyltransferase2-(N-MORPHOLINO)-ETHANESULFONIC ACIDSODIUM ION
crystal structureangstrom