3BZM:
reference: Structure of isochorismate synthase in complex with magnesium., Parsons JF, Shi KM, Ladner JE, Acta Crystallogr D Biol Crystallogr. 2008 May;64(Pt 5):607-10. Epub 2008, Apr 19. PMID: 18453696

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