ED50 <2 μg/mL resulted in the secretion of 0.15 ng/mL h-IFN-gamma when tested using KG-1 cell line, corresponding to a specific activity of > 500 units/mg. AA 37-194, expressed with an N-terminal Met.
Lyophilized after extensive dialysis against 50 mM Tris, 50 mM NaCl, pH 8.0.
储存条件
-80 °C
储存方法
Lyophilized recombinant ratInterleukin-18 (rrIL-18) remains stable up to 6 months at -80 °C from date of receipt. Upon reconstitution, rrIL-18 should be stable up to 2 weeks at 4 °C or up to 3 months at -20 °C.
有效期
6 months
抗原
IL-18 (IL18)
(Interleukin 18 (IL18))
别名
Interleukin-18 (IL-18)
背景
Interleukin-18 (IL18, also known as interferon-gamma inducing factor or IGIF) is a cytokine that belongs to the IL-1 superfamily and is produced by macrophages and other cells. Its biological activity is pleiotropic and it has been shown to induce interferon-gamma production in KG-1 cells. The combination of this cytokine and IL12 has been shown to inhibit IL4 dependent IgE and IgG1 production, and enhance IgG2a production in B cells.Recombinant rat Interleukin-18 (rrIL-18) produced in E. coli is a single non-glycosylated polypeptide chain containing 159 amino acids. A fully biologically active molecule, rrIL-18 has a molecular mass of 18.4 kDa analyzed by reducing SDS-PAGE. Synonyms: NKSF, CTL maturation factor (TCMF), Cytotoxic lymphocyte maturation factor (CLMF), TSF, Interferon-gamma-inducing factor, IGIF, IL-1g, IL1F4, IL-1 gamma