4Z5S:
reference: Identification of residues important for the activity of aldehyde-deformylating oxygenase through investigation into the structure-activity relationship., Wang Q, Bao L, Jia C, Li M, Li JJ, Lu X, BMC Biotechnol. 2017 Mar 16;17(1):31. doi: 10.1186/s12896-017-0351-8. PMID: 28302170

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