1DCN:
reference: Crystal structure of an inactive duck delta II crystallin mutant with bound argininosuccinate., Vallee F, Turner MA, Lindley PL, Howell PL, Biochemistry 1999 Feb 23;38(8):2425-34. PMID: 10029536

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