RecombinantIL-5, Human (CHO-expressed)

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 Human IL-5 is homodimeric protein with molecular weight ranging from 29 to 35 kDa due to glycosylation.

Product Specifications

CAS Number

9000-83-3

Endotoxin

< 0.2 EU/μg, determined by LAL method.

Purity

> 95% as analyzed by SDS-PAGE and HPLC.

Bioactivity

ED50 < 1 ng/ml, measured in a cell proliferation assay using TF-1 cells, corresponding to a specific activity of > 1x10ˆ6 units/mg.

Reconstitution

Reconstituted in ddH2O or PBS at 100 μg/ml.

Molecular Weight

~29-35 kDa, observed by non-reducing SDS-PAGE.

Storage Conditions

Lyophilized recombinant human Interlerkin 5 (rhIL-5) remains stable up to 6 months at -80°C from date of receipt. Upon reconstitution, rhIL-5 should be stable up to 1 week at 4°C or up to 2 months at -20°C.