1GEF:
reference: Crystal structure of the archaeal holliday junction resolvase Hjc and implications for DNA recognition., Nishino T, Komori K, Tsuchiya D, Ishino Y, Morikawa K, Structure (Camb) 2001 Mar 7;9(3):197-204. PMID: 11286886

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