4J2N:
reference: The Structure of Xis Reveals the Basis for Filament Formation and Insight into DNA Bending within a Mycobacteriophage Intasome., Singh S, Plaks JG, Homa NJ, Amrich CG, Heroux A, Hatfull GF, Vandemark AP, J Mol Biol. 2013 Oct 7. pii: S0022-2836(13)00628-1. doi:, 10.1016/j.jmb.2013.10.002. PMID: 24112940

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