6DNW:
reference: Serine Integrase attP Binding and Specificity., Li H, Sharp R, Rutherford K, Gupta K, Van Duyne GD, J Mol Biol. 2018 Sep 15. pii: S0022-2836(18)30785-X. doi:, 10.1016/j.jmb.2018.09.007. PMID: 30227134

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