6W3L:
reference: Molecular and structural characterization of disease-associated APE1 polymorphisms., Whitaker AM, Stark WJ, Flynn TS, Freudenthal BD, DNA Repair (Amst). 2020 May 16;91-92:102867. doi: 10.1016/j.dnarep.2020.102867. PMID: 32454397

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