2VTY:
reference: Vaccinia virus anti-apoptotic F1L is a novel Bcl-2-like domain-swapped dimer that binds a highly selective subset of BH3-containing death ligands., Kvansakul M, Yang H, Fairlie WD, Czabotar PE, Fischer SF, Perugini MA, Huang DC, Colman PM, Cell Death Differ. 2008 Oct;15(10):1564-71. Epub 2008 Jun 13. PMID: 18551131

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