5V5J:
reference: How nature tunes isoenzyme activity in the multifunctional catalytic globin dehaloperoxidase from Amphitrite ornata., Carey LM, Gavenko R, Svistunenko DA, Ghiladi RA, Biochim Biophys Acta Proteins Proteom. 2018 Feb;1866(2):230-241. doi:, 10.1016/j.bbapap.2017.11.004. Epub 2017 Nov 9. PMID: 29128676

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