5VI4:
reference: IL-1 Family Cytokines Use Distinct Molecular Mechanisms to Signal through Their Shared Co-receptor., Gunther S, Deredge D, Bowers AL, Luchini A, Bonsor DA, Beadenkopf R, Liotta L, Wintrode PL, Sundberg EJ, Immunity. 2017 Sep 19;47(3):510-523.e4. doi: 10.1016/j.immuni.2017.08.004. PMID: 28930661

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