|Synonyms||EDF, BCDFII, TRF|
|Description||Interleukin-5 (IL-5), produced by mast cells, T cells and eosinophils, is responsible for the activities attributed to eosinophil differentiating factor, B cell growth factor II and T cell-replacing factor (TRF). It can increase production and mobilization of eosinophils and CD34+ progenitors from the bone marrow. IL-5 plays an important role in inducing cell-mediated immunity against parasitic infections and certain tumors. IL-5 also promotes differentiation of basophils and primes them for histamine and leukotriene release.
Recombinant rat Interleukin-5 (rrIL-5) produced in E. coli is a disulfide-linked homodimer containing two non-glycosylated polypeptide chains of 113 amino acids each. A fully biologically active molecule, rrIL-5 has a molecular mass of 26.0 kDa analyzed by non-reducing SDS-PAGE and is obtained by proprietary chromatographic techniques at GenScript.
|Specific Activity||ED50 < 0.4 ng/mL, measured by a cell proliferation assay using TF-1 Cells, corresponding to a specific activity of > 2.5× 106 units/mg.|
MEIPMSTVVK ETLIQLSTHR ALLTSNETMR LPVPTHKNHQ
LCIGEIFQGL DILKNQTVRG GTVEILFQNL SLIKKYIDGQ
KEKCGEERRK TRHFLDYLQE FLGVMSTEWA MEV
|Measured Molecular Weight||26.0 kDa, observed by non-reducing SDS-PAGE.|
|Purity||> 95% by SDS-PAGE analysis.|
|Formulation||Lyophilized after extensive dialysis against 20mM Tris, pH8.5.|
|Reconstitution||Reconstituted in ddH2O at 100 μg/mL.|
|Endotoxin Level||< 0.2 EU/μg, determined by LAL method.|
|Storage||Lyophilized recombinant rat Interleukin-5 (rrIL-5) remains stable up to 6 months at -80°C from date of receipt. Upon reconstitution, rrIL-5 should be stable up to 2 weeks at 4°C or up to 3 months at -20°C.|
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