Interleukin 9, Protein Il9, Il9, HP40, Cytokine P40, T-cell growth factor P40
Interleukin-9 is a protein that acts as one of the regulators of hematopoiesis. IL-9 is an enhancer of cells and megakaryoblastic leukemic cells’ growth. Among this protein’s producers we can find cells like mast cells, Treg, NKT cells, Th17, Th2, ILC2, and Th9 cells in various amounts. Th9 are the primary CD4 cells (T cells) that IL-9 is produced in.
IL-9 Human produced in Sf9 Baculovirus cells is a single, glycosylated polypeptide chain containing 132 amino acids (19-144 aa) and having a molecular mass of 14.9kDa.
IL-9 is fused to a 6 amino acid His tag at C-terminus and purified by proprietary chromatographic techniques.
The IL-9 solution (0.5mg/ml) contains 10% Glycerol and Phosphate-Buffered Saline (pH 7.4).
Store at 4°C if entire vial will be used within 2-4 weeks.
Store, frozen at -20°C for longer periods of time.
For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).
Avoid multiple freeze-thaw cycles.
Greater than 85.0% as determined by SDS-PAGE.
Determined by cell proliferation assay using MO7e human megakaryocytic leukemic cells. ED50 range for this effect is ≤ 0.3 ng/ml.
Amino acid sequence
QGCPTLAGIL DINFLINKMQ EDPASKCHCS ANVTSCLCLG IPSDNCTRPC FSERLSQMTN
TTMQTRYPLI FSRVKKSVEV LKNNKCPYFS CEQPCNQTTA GNALTFLKSL LEIFQKEKMR GMRGKIHHHH HH