Recombinant IL-5, Human
Catalogue Numbers: BK0106-10, BK0106-50
Sizes: 10μg, 50μg
Source: Escherichia coli
Molecular Weight: 26.5 kDa, observed by non-reducing SDS-PAGE.
Purity: > 95% by SDS-PAGE.
Biological Activity: ED50 < 1.0 ng/ml, measured by a cell proliferation assay using TF-1 Cells, corresponding to a specific activity of > 1.0× 10ˆ6 units/mg.
Physical Appearance: Sterile Filtered White lyophilized (freeze-dried) powder.
Formulation: Lyophilized after extensive dialysis against 25mM Tris, pH8.0.
AA Sequence: MIPTEIPTS ALVKETLALL STHRTLLIAN ETLRIPVPVH KNHQLCTEEI FQGIGTLESQ t VQGGt VERL FKNLSLIKKY IDGQKKKCGE ERRRVNQFLD YLQEFLGVMN TEWIIES
Endotoxin: < 0.2 EU/μg, determined by LAL method.
Reconstitution: Reconstituted in ddH2O at 100 μg/ml.
Storage: Lyophilized recombinant Human Interleukin-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 2 weeks at 4°C or up to 3 months at -20°C.
Usage: This material is offered by USA Bioworld biotech for research, laboratory or further evaluation purposes. For research use only.
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 Human Interleukin-5 (rhIL-5) produced in E.coli is a disulfide-linked homodimer containing two non-glycosylated polypeptide chains of 116 amino acids each. A fully biologically active molecule, rhIL-5 has a molecular mass of 26.5 kDa analyzed by non-reducing SDS-PAGE and is obtained by proprietary chromatographic techniques at GenScript.