4WD4:
reference: In-Cell Enzymology To Probe His-Heme Ligation in Heme Oxygenase Catalysis., Sigala PA, Morante K, Tsumoto K, Caaveiro JM, Goldberg DE, Biochemistry. 2016 Aug 30;55(34):4836-49. doi: 10.1021/acs.biochem.6b00562. Epub , 2016 Aug 15. PMID: 27490825

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