Recombinant Murine Migration Inhibitor Factor

Synonyms MIF, DER6, GIF, L-dopachrome Isomerase, L-dopachrome Tautomerase, Phenylpyruvate Tautomerase

Accession P34884

GeneID 17319

Source Escherichia coli.

Molecular Weight Approximately 12.5 kDa, a single non-glycosylated polypeptide chain containing 115 amino acids.

Quantity 10µg/50µg/1mg

AA Sequence MPMFIVNTNV PRASVPEGFL SELTQQLAQA TGKPAQYIAV HVVPDQLMTF SGTNDPCALC SLHSIGKIGG AQNRNYSKLL CGLLSDRLHI SPDRVYINYY DMNAANVGWN GSTFA

Purity > 96 % by SDS-PAGE and HPLC analyses.

Biological Activity Bioassay data are not available.

Physical Appearance Sterile Filtered White lyophilized (freeze-dried) powder.

Formulation Lyophilized from a 0.2 µm filtered concentrated solution in PBS, pH 7.4, 1 mM DTT.

Endotoxin Less than 1 EU/µg of rMuMIF as determined by LAL method.

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.

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.

Usage This material is offered by Shanghai PrimeGene Bio-Tech for research, laboratory or further evaluation purposes. NOT FOR HUMAN USE.

SDS-PAGE

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.

Background 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.