3IA8:
reference: Structure of the C-terminal heme-binding domain of THAP domain containing protein 4 from Homo sapiens., Bianchetti CM, Bingman CA, Phillips GN Jr, Proteins. 2011 Apr;79(4):1337-41. doi: 10.1002/prot.22944. Epub 2011 Jan, 18. PMID: 21387410

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