4EP4:
reference: Structural asymmetry in the Thermus thermophilus RuvC dimer suggests a basis for sequential strand cleavages during Holliday junction resolution., Chen L, Shi K, Yin Z, Aihara H, Nucleic Acids Res. 2012 Oct 31. PMID: 23118486

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