1OB9:
reference: Substrate recognition and catalysis by the Holliday junction resolving enzyme Hje., Middleton CL, Parker JL, Richard DJ, White MF, Bond CS, Nucleic Acids Res. 2004 Oct 12;32(18):5442-51. Print 2004. PMID: 15479781

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