5ZT8:
reference: Structure of sirohydrochlorin ferrochelatase SirB: the last of the structures of the class II chelatase family., Fujishiro T, Shimada Y, Nakamura R, Ooi M, Dalton Trans. 2019 Feb 19. doi: 10.1039/c8dt04727h. PMID: 30778451

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