1J4B:
reference: Recombinant mouse muscle adenylosuccinate synthetase: overexpression, kinetics, and crystal structure., Iancu CV, Borza T, Choe JY, Fromm HJ, Honzatko RB, J Biol Chem 2001 Nov 9;276(45):42146-52. PMID: 11560929

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