MIF-2

E.coli

DER6, GIF

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. Rat MIF is 99%, 90%, 89%, and 89% a.a. identical to human, murine, porcine and bovine, respectively.

Approximately 12.5 kDa.

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

Sterile Filtered White lyophilized (freeze-dried) powder.

> 96% by SDS-PAGE and HPLC analyses.

< 1.0 EU per 1μg of the protein

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