4F2K:
reference: Macrophage migration inhibitory factor covalently complexed with phenethyl isothiocyanate., Tyndall JD, Lue H, Rutledge MT, Bernhagen J, Hampton MB, Wilbanks SM, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2012 Sep 1;68(Pt 9):999-1002., doi: 10.1107/S1744309112030552. Epub 2012 Aug 29. PMID: 22949182

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