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IL-9 is an immunoregulatory cytokine produced by IL-2 activated Th2 lymphocytes.? IL-9 enhances the proliferation of T lymphocytes, mast cells, erythroid precursor cells and megakaryoblastic leukemia cell lines.? Over-expression of IL-9 has been implicated in the pathogenesis of anaplastic lymphoma and Hodgkin’s disease.? Whereas murine IL-9 can function on human cells, human IL-9 is inactive on mouse cells.? Recombinant Human IL-9 is a 14.0 kDa protein of 127 amino acid residues, including 10 cysteine residues that are fully conserved between the human and murine proteins.
Source: E.coli
Synonyms: p40 cytokine, T-cell growth factor p40
AA Sequence: MQGCPTLAGI LDINFLINKM QEDPASKCHC SANVTSCLCL GIPSDNCTRP CFSERLSQMT NTTMQTRYPL IFSRVKKSVE VLKNNKCPYF SCEQPCNQTT AGNALTFLKS LLEIFQKEKM RGMRGKI
Purity: ≥ 98% by SDS-PAGE gel and HPLC analyses.
Biological Activity: The ED50 as determined by the dose-dependent proliferation of human M07e cells was ≤ 0.2 ng/ml, corresponding to a specific activity of ≥ 5 x 106 units/mg.
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