Structural Study of the Complex Formed by Ceruloplasmin and Macrophage Migration Inhibitory Factor.

Sokolov AV, Dadinova LA, Petoukhov MV, Bourenkov G, Dubova KM, Amarantov SV, Volkov VV, Kostevich VA, Gorbunov NP, Grudinina NA, Vasilyev VB, Samygina VR, Biochemistry (Mosc) 83(6):701-707 (2018) Europe PMC

SASDDF3 – Macrophage migration inhibitory factor bound to Ceruloplasmin (MIF-CP complex)

Macrophage migration inhibitory factor
Ceruloplasmin
MWI(0) 138 kDa
MWexpected 160 kDa
VPorod 228 nm3
log I(s) 1.30×104 1.30×103 1.30×102 1.30×101
Macrophage migration inhibitory factor Ceruloplasmin small angle scattering data  s, nm-1
ln I(s)
Macrophage migration inhibitory factor Ceruloplasmin Guinier plot ln 1.31×104 Rg: 3.6 nm 0 (3.6 nm)-2 s2
(sRg)2I(s)/I(0)
Macrophage migration inhibitory factor Ceruloplasmin Kratky plot 1.104 0 3 sRg
p(r)
Macrophage migration inhibitory factor Ceruloplasmin pair distance distribution function Rg: 3.9 nm 0 Dmax: 14.4 nm

Data validation


Fits and models


log I(s)
 s, nm-1
Macrophage migration inhibitory factor Ceruloplasmin CLUSPRO model

SAXS data from solutions of macrophage migration inhibitory factor bound to Ceruloplasmin (MIF-CP complex) in 50mM CuSO4, 100mM HEPES, pH 7.4 were collected using a HECUS System-3 instrument (Moscow, Russian Federation) with a linear Braun OED 50M position-sensitive detector at a sample to detector distance of 0.3 m and at a wavelength of λ = 0.154 nm (l(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). Solute concentrations ranging between 5 and 10 mg/ml were measured at 20°C. One 5400 second frame was collected. The data were normalized to the intensity of the transmitted beam and radially averaged; the scattering of the solvent-blank was subtracted.

Macrophage migration inhibitory factor (MIF)
Mol. type   Protein
Organism   Homo sapiens
Olig. state   Trimer
Mon. MW   12.5 kDa
 
UniProt   P14174 (1-115)
Sequence   FASTA
 
Ceruloplasmin (CP)
Mol. type   Protein
Organism   Homo sapiens
Olig. state   Monomer
Mon. MW   122.2 kDa
 
UniProt   P00450 (1-1065)
Sequence   FASTA