4ZLT:
reference: Parallel Evolution of Chemokine Binding by Structurally Related Herpesvirus Decoy Receptors., Lubman OY, Fremont DH, Structure. 2015 Nov 30. pii: S0969-2126(15)00457-8. doi:, 10.1016/j.str.2015.10.018. PMID: 26671708

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