1FIM:
reference: Crystal structure of the macrophage migration inhibitory factor from rat liver., Suzuki M, Sugimoto H, Nakagawa A, Tanaka I, Nishihira J, Sakai M, Nat Struct Biol 1996 Mar;3(3):259-66. PMID: 8605628

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