1HIB:
reference: Structure of an interleukin-1 beta mutant with reduced bioactivity shows multiple subtle changes in conformation that affect protein-protein recognition., Camacho NP, Smith DR, Goldman A, Schneider B, Green D, Young PR, Berman HM, Biochemistry 1993 Aug 31;32(34):8749-57. PMID: 8364024

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