1KRM:
reference: Structure of bovine adenosine deaminase complexed with 6-hydroxy-1,6-dihydropurine riboside., Kinoshita T, Nishio N, Nakanishi I, Sato A, Fujii T, Acta Crystallogr D Biol Crystallogr 2003 Feb;59(Pt 2):299-303. PMID: 12554940

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