1Z56:
reference: Structure of an Xrcc4-DNA ligase IV yeast ortholog complex reveals a novel BRCT interaction mode., Dore AS, Furnham N, Davies OR, Sibanda BL, Chirgadze DY, Jackson SP, Pellegrini L, Blundell TL, DNA Repair (Amst). 2005 Dec 30;. PMID: 16388993

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