4XT1:
reference: Structural biology. Structural basis for chemokine recognition and activation of a viral G protein-coupled receptor., Burg JS, Ingram JR, Venkatakrishnan AJ, Jude KM, Dukkipati A, Feinberg EN, Angelini A, Waghray D, Dror RO, Ploegh HL, Garcia KC, Science. 2015 Mar 6;347(6226):1113-7. doi: 10.1126/science.aaa5026. PMID: 25745166

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