1KKC:
reference: Comparison of the crystal structures of the human manganese superoxide dismutase and the homologous Aspergillus fumigatus allergen at 2-A resolution., Fluckiger S, Mittl PR, Scapozza L, Fijten H, Folkers G, Grutter MG, Blaser K, Crameri R, J Immunol 2002 Feb 1;168(3):1267-72. PMID: 11801664

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