Structural Study of the Complex Formed by Ceruloplasmin and Macrophage Migration Inhibitory Factor.
Sokolov, A.V., Dadinova, L.A., Petoukhov, M.V., Bourenkov, G., Dubova, K.M., Amarantov, S.V., Volkov, V.V., Kostevich, V.A., Gorbunov, N.P., Grudinina, N.A., Vasilyev, V.B., Samygina, V.R.(2018) Biochemistry (Mosc) 83: 701-707
- PubMed: 30195326 
- DOI: https://doi.org/10.1134/S000629791806007X
- Primary Citation of Related Structures:  
6FVE, 6FVH - PubMed Abstract: 
Macrophage migration inhibitory factor (MIF) is a key proinflammatory cytokine. Inhibitors of tautomerase activity of MIF are perspective antiinflammatory compounds. Ceruloplasmin, the copper-containing ferroxidase of blood plasma, is a noncompetitive inhibitor of tautomerase activity of MIF in the reaction with p-hydroxyphenylpyruvate. Small-angle X-ray scattering established a model of the complex formed by MIF and ceruloplasmin. Crystallographic analysis of MIF with a modified active site supports the model. The stoichiometry of 3 CP/MIF trimer complex was established using gel filtration. Conformity of novel data concerning the interaction regions in the studied proteins with previous biochemical data is discussed.
Organizational Affiliation: 
Institute of Experimental Medicine, St. Petersburg, 197376, Russia.