Recombinant Murine Migration Inhibitor Factor
Macrophage migration inhibitory factor (MIF or MMIF), also named as glycosylation-inhibiting factor (GIF), L-dopachrome isomerase, or phenylpyruvate tautomerase, is a protein encoded by the MIF gene. It is released from white blood cells by bacterial antigen stimulation to trigger an acute immune response, or by glucocorticoids to counter-act the inhibitory effects of glucocorticoids on immune system. MIF is a homotrimer of which each subunit contains 115 amino acids. As mentioned above, MIF is involved in the innate immune response to bacterial pathogens and counter-acts the anti-inflammatory activity of glucocorticoids. Furthermore, it also plays a role as mediator in regulating the function of macrophages in host defense and has phenylpyruvate tautomerase and dopachrome tautomerase activity in vitro. Mouse MIF is active on human cells, while human MIF is active on mouse cells. Mouse MIF is 99 %, 84 %, 90 %, and 90 % a.a. identical to rat, porcine, bovine and human MIF, respectively.
Reference
1. WY Weiser, PA Temple, JS Witek-Giannotti, et al. 1989. Proc Natl Acad Sci U S A, 86: 7522-6
2. CA Kozak, MC Adamson, CE Buckler, et al. 1995. Genomics, 27: 405-11
3. DF LarsonandK Horak. 2006. Crit Care, 10: 138
4. HW Sun, J Bernhagen, R Bucala, et al. 1996. Proc Natl Acad Sci U S A, 93: 5191-6
5. M Oddo, T Calandra, R Bucala, et al. 2005. Infect Immun, 73: 3783-6
6. M Emonts, FC Sweep, N Grebenchtchikov, et al. 2007. Clin Infect Dis, 44: 1321-8
7. J Bernhagen, RA Mitchell, T Calandra, et al. 1994. Biochemistry, 33: 14144-55.
| Gene ID | 17319 |
| Accession # | P34884 |
| Alternate Names | MIF, DER6, GIF, L-dopachrome Isomerase, L-dopachrome Tautomerase, Phenylpyruvate Tautomerase |
| Source | Escherichia coli. |
| M.Wt | Approximately 12.5 kDa, a single non-glycosylated polypeptide chain containing 115 amino acids. |
| AA Sequence | MPMFIVNTNV PRASVPEGFL SELTQQLAQA TGKPAQYIAV HVVPDQLMTF SGTNDPCALC SLHSIGKIGG AQNRNYSKLL CGLLSDRLHI SPDRVYINYY DMNAANVGWN GSTFA |
| Appearance | Sterile Filtered White lyophilized (freeze-dried) powder. |
| 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. - 3 months, -20 to -70 °C under sterile conditions after reconstitution. |
| Formulation | Lyophilized from a 0.2 μm filtered concentrated solution in PBS, pH 7.4, 1 mM DTT. |
| Reconstitution | We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1 % BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤ -20 °C. Further dilutions should be made in appropriate buffered solutions. |
| Biological Activity | Bioassay data are not available. |
| Shipping Condition | Gel pack. |
| Handling | Centrifuge the vial prior to opening. |
| Usage | For Research Use Only! Not to be used in humans. |
Quality Control & DataSheet
- View current batch:
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Purity > 96 % by SDS-PAGE and HPLC analyses.
- Datasheet
Endotoxin: Less than 1 EU/μg of rMuMIF as determined by LAL method.