1KHH:
reference: Crystal structure of guanidinoacetate methyltransferase from rat liver: a model structure of protein arginine methyltransferase., Komoto J, Huang Y, Takata Y, Yamada T, Konishi K, Ogawa H, Gomi T, Fujioka M, Takusagawa F, J Mol Biol 2002 Jul 5;320(2):223-35. PMID: 12079381

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