1A4L:
reference: Complexes of adenosine deaminase with two potent inhibitors: X-ray structures in four independent molecules at pH of maximum activity., Wang Z, Quiocho FA, Biochemistry 1998 Jun 9;37(23):8314-24. PMID: 9622483

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