5HM5:
reference: Methanopyrus kandleri topoisomerase V contains three distinct AP lyase active sites in addition to the topoisomerase active site., Rajan R, Osterman A, Mondragon A, Nucleic Acids Res. 2016 Feb 22. pii: gkw122. PMID: 26908655

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