1QB8:
reference: Crystal structures of adenine phosphoribosyltransferase from Leishmania donovani., Phillips CL, Ullman B, Brennan RG, Hill CP, EMBO J 1999 Jul 1;18(13):3533-45. PMID: 10393170

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).