1MD6:
reference: High-resolution structure of murine interleukin 1 homologue IL-1F5 reveals unique loop conformations for receptor binding specificity., Dunn EF, Gay NJ, Bristow AF, Gearing DP, O'Neill LA, Pei XY, Biochemistry 2003 Sep 23;42(37):10938-44. PMID: 12974628

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