1ADD:
reference: A pre-transition-state mimic of an enzyme: X-ray structure of adenosine deaminase with bound 1-deazaadenosine and zinc-activated water., Wilson DK, Quiocho FA, Biochemistry 1993 Feb 23;32(7):1689-94. PMID: 8439534

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