4AMU:
reference: Structural Characterization of the Enzymes Composing the Arginine Deiminase Pathway in Mycoplasma penetrans., Gallego P, Planell R, Benach J, Querol E, Perez-Pons JA, Reverter D, PLoS One. 2012;7(10):e47886. doi: 10.1371/journal.pone.0047886. Epub 2012 Oct 17. PMID: 23082227

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