1JSW:
reference: The structure of L-aspartate ammonia-lyase from Escherichia coli., Shi W, Dunbar J, Jayasekera MM, Viola RE, Farber GK, Biochemistry 1997 Jul 29;36(30):9136-44. PMID: 9230045

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