2ZAL:
reference: Crystal structure of isoaspartyl aminopeptidase in complex with L-aspartate., Michalska K, Brzezinski K, Jaskolski M, J Biol Chem. 2005 Aug 5;280(31):28484-91. Epub 2005 Jun 9. PMID: 15946951

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