Recombinant Biotinylated Human MIF Protein, His, Avitag™, 25 µg

Background
Macrophage migration inhibitory factor(MIF) is also known as Glycosylation-inhibiting factor(GIF), L-dopachrome isomerase, L-dopachrome tautomerase, Phenylpyruvate tautomerase. Interacts with CXCR2 extracellular domain, CD74 extracellular domain, COPS5 and BNIPL. The expression of MIF at sites of inflammation suggests a role as mediator in regulating the function of macrophages in host defense. Counteracts the anti-inflammatory activity of glucocorticoids. Has phenylpyruvate tautomerase and dopachrome tautomerase activity (in vitro), but the physiological substrate is not known. It is not clear whether the tautomerase activity has any physiological relevance, and whether it is important for cytokine activity.

Source
Recombinant Biotinylated Human MIF, His,Avitag (MIF-H82E7) is expressed from human 293 cells (HEK293). It contains AA Pro 2 - Ala 115 (Accession # P14174-1).
Predicted N-terminus: Pro 2

Molecular Characterization
This protein carries a polyhistidine tag at the C-terminus, followed by an Avi tag (Avitag™).
The protein has a calculated MW of 16.0 kDa. The protein migrates as 20 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

Biotinylation
Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.

Biotin:Protein Ratio
Passed as determined by the HABA assay / binding ELISA.

Endotoxin
Less than 1.0 EU per μg by the LAL method.

Purity
>90% as determined by SDS-PAGE.

Formulation
Lyophilized from 0.22 μm filtered solution in 25 mM MES, 500 mM NaCl, pH6.5. Normally trehalose is added as protectant before lyophilization.

Reconstitution
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

Storage
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
-20°C to -70°C for 12 months in lyophilized state;
-70^°C for 3 months under sterile conditions after reconstitution.

Clinical and Translational Updates

(1)  "Sulfur-isotope anomalies recorded in Antarctic ice cores as a potential proxy for tracing past ozone layer depletion events"
Dasari, Paris, Charreau et al
PNAS Nexus (2022) 1 (4), pgac170
(2)  "Characteristics and possible mechanisms of metabolic disorder in overweight women with polycystic ovary syndrome"
Yu, Zhou, Ding et al
Front Endocrinol (Lausanne) (2022) 13, 970733
(3)  "Dynamic changes in human THP-1-derived M1-to-M2 macrophage polarization during Thelazia callipaeda MIF induction"
Yin, Cai, Gou et al
Front Immunol (2022) 13, 1078880
Showing 1-3 of 6133 papers.