MIF (or macrophage Migration Inhibitory Factor) was the first lymphokine/cytokine to be recognized in the pregenomics era (1, 2). Regardless, it is one of the least understood of all inflammatory mediators (1, 3). Human MIF is a 12.5 kDa, 115 amino acid (aa) nonglycosylated polypeptide that is synthesized without a signal sequence (4-7). Secretion occurs nonclassically via an ABCA1 transporter (8). The initiating Met is removed, leaving Pro as the first amino acid. The molecule consists of two alpha -helices and six beta -strands, four of which form a beta -sheet. The two remaining beta -strands interact with other MIF molecules, creating a trimer (2, 9, 10). Structure-function studies suggest MIF is bifunctional with segregated topology. The N- and C-termini mediate enzyme activity (in theory). Phenylpyruvate tautomerase activity (enol-to-keto) has been demonstrated and is dependent upon Pro at position #1 (11). Amino acids 50-65 have also been suggested to contain thiol-protein oxidoreductase activity (12). MIF has proinflammatory cytokine activity centered around aa’s 49-65. On fibroblasts, MIF induces, IL-1, IL-8, and MMP expression; on macrophages, MIF stimulates NO production and TNF-alpha release following IFN-gamma activation (13, 14). MIF apparently acts through CD74 and CD44, likely in some form of trimeric interaction (15, 16). Human MIF is active on mouse cells (14). Human MIF is 90%, 94%, 95%, and 90% aa identical to mouse, bovine, porcine, and rat MIF, respectively.
Key Product Details
Species Reactivity
Human
Applications
Western Blot
Label
Unconjugated
Antibody Source
Monoclonal Mouse IgG1 Clone # 932603
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Product Specifications
Immunogen
E. coli-derived recombinant human MIF
Met1-Phe114
Accession # P14174
Met1-Phe114
Accession # P14174
Specificity
Detects human MIF in direct ELISA and Western Blots.
Clonality
Monoclonal
Host
Mouse
Isotype
IgG1
Scientific Data Images for Human MIF Antibody
Detection of Human MIF by Western Blot.
Western blot shows lysates of THP-1 human acute monocytic leukemia cell line and U937 human histiocytic lymphoma cell line. PVDF membrane was probed with 2 µg/mL of Mouse Anti-Human MIF Monoclonal Antibody (Catalog # MAB2893) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF018). A specific band was detected for MIF at approximately 12 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.Applications for Human MIF Antibody
Application
Recommended Usage
Western Blot
2 µg/mL
Sample: THP‑1 human acute monocytic leukemia cell line and U937 human histiocytic lymphoma cell line
Sample: THP‑1 human acute monocytic leukemia cell line and U937 human histiocytic lymphoma cell line
Formulation, Preparation, and Storage
Purification
Protein A or G purified from hybridoma culture supernatant
Reconstitution
Reconstitute at 0.5 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.
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Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
Shipping
Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Calculators
Background: MIF
References
- Norand, E.F. and M. Leech (2005) Front. Biosci. 10:12.
- Donn, R.P. and D.W. Ray (2004) J. Endocrinol. 182:1.
- Calandra, T. and T. Roger (2003) Nat. Rev. Immunol. 3:791.
- Kozak, C.A. et al. (1995) Genomics 27:405.
- Weiser, W.Y. et al. (1989) Proc. Natl. Acad. Sci. USA 86:7522.
- Paralkar, V. and G. Wistow (1994) Genomics 19:48.
- Wistow, G.J. et al. (1993) Proc. Natl. Acad. Sci. USA 90:1272.
- Flieger, O. et al. (2003) FEBS Lett. 551:78.
- Philo, J.S. et al. (2004) Biophys. Chem. 108:77.
- Sun, H-W. et al. (1996) Protein Eng. 9:631.
- Stamps, S.L. et. al. (2000) Biochemistry 39:9671.
- Nguyen, M.T. et al. (2003) J. Biol. Chem. 278:33654.
- Sato, A. et al. (2003) Dev. Comp. Immunol. 27:401.
- Bernhagen, J. et al. (1994) Biochemistry 33:14144.
- Leng, L. et al. (2003) J. Exp. Med. 197:1467.
- Meyer-Siegler, K.L. and P.L. Vera (2005) J. Urol. 173:615.
Long Name
Macrophage Migration Inhibitory Factor
Alternate Names
EC 5.3.2.1, EC 5.3.3.12, GIFmacrophage migration inhibitory factor, GLIF, Glycosylation-inhibiting factor, L-dopachrome isomerase, L-dopachrome tautomerase, macrophage migration inhibitory factor (glycosylation-inhibiting factor), MMIF, Phenylpyruvate tautomerase
Gene Symbol
MIF
UniProt
Additional MIF Products
Product Documents for Human MIF Antibody
Certificate of Analysis
To download a Certificate of Analysis, please enter a lot or batch number in the search box below.
Note: Certificate of Analysis not available for kit components.
Product Specific Notices for Human MIF Antibody
For research use only
Related Research Areas
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Protocols
Find general support by application which include: protocols, troubleshooting, illustrated assays, videos and webinars.
- Cellular Response to Hypoxia Protocols
- R&D Systems Quality Control Western Blot Protocol
- Troubleshooting Guide: Western Blot Figures
- Western Blot Conditions
- Western Blot Protocol
- Western Blot Protocol for Cell Lysates
- Western Blot Troubleshooting
- Western Blot Troubleshooting Guide
- View all Protocols, Troubleshooting, Illustrated assays and Webinars
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