RecombinantIL-18, Rat

• Description:

  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 and is obtained by proprietary chromatographic techniques at GenScript.

• Endotoxin:

  < 0.2 EU/μg, determined by LAL method.

• Purity:

  > 95% by SDS-PAGE analyses.

• Bioactivity:

  ED50 <2μg/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.

• Reconstitution:

  Reconstituted in ddH2O at 100 μg/ml.

• Molecular Weight:

  18.4 kDa, observed by reducing SDS-PAGE.

• Storage Conditions:

  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.

• Appearance:

  Sterile Filtered White lyophilized (freeze-dried) powder.

• Formulation:

  Lyophilized after extensive dialysis against 50mM Tris, 50mM NaCl, pH8.0.

• Host or Source:

  Escherichia coli.

• Recommended Usage:

  This material is offered by USA Bioworld biotech for research, laboratory or further evaluation purposes. For research use only.

• CAS Number:

  9000-83-3

• AA Sequence:

  MHFGRLHCT TAVIRSINDQ VLFVDKRNPP VFEDMPDIDR TANESQTRLI IYMYKDSEVR GLAVTLSVKD GRMSTLSCKN KIISFEEMNP PENIDDIKSD LIFFQKRVPG HNKMEFESSL YEGHFLACQK EDDAFKLVLK RKDENGDKSV MFTLTNLHQS