3T7V:
reference: Crystal Structure of Methylornithine Synthase (PylB): Insights into the Pyrrolysine Biosynthesis., Quitterer F, List A, Eisenreich W, Bacher A, Groll M, Angew Chem Int Ed Engl. 2011 Nov 16. doi: 10.1002/anie.201106765. PMID: 22095926

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