1KP0:
reference: Structure of creatine amidinohydrolase from Actinobacillus., Padmanabhan B, Paehler A, Horikoshi M, Acta Crystallogr D Biol Crystallogr 2002 Aug;58(Pt 8):1322-8. PMID: 12136144

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