Measured in a cell proliferation assay using TF‑1 human erythroleukemic cells. The ED50 for this effect is 2-13 ng/ml. (QC verified)

IL-13 Protein, Mouse, Recombinant (aa 26-131, His) is expressed in HEK293 mammalian cells with C-6xHis tag. The predicted molecular weight is 15-30 KDa and the accession number is P20109.

Mouse

HEK293 Cells

T-Cell Activation Protein P600,Interleukin-13,IL-13,Il13

Ser26-Phe131

Ser26-Phe131

Greater than 95% as determined by reducing SDS-PAGE. Greater than 95% as determined by SEC-HPLC.

Reconstitute the lyophilized protein in distilled water. The product concentration should not be less than 100 μg/ml. Before opening, centrifuge the tube to collect powder at the bottom. After adding the reconstitution buffer, avoid vortexing or pipetting for mixing.

Lyophilized powders can be stably stored for over 12 months, while liquid products can be stored for 6-12 months at -80°C. For reconstituted protein solutions, the solution can be stored at -20°C to -80°C for at least 3 months. Please avoid multiple freeze-thaw cycles and store products in aliquots.

Mouse interleukin 13 (mIL-13) is a pleiotropic cytokine produced by activated Th2 cells. IL-13 induces B cell proliferation and immunoglobin production. It contains a four helical bundle with two internal disulfide bonds. Mouse IL13 shares 58% sequence identity with human protein and exhibits cross-species activity. IL13 signals via receptor IL13R (type2, IL4R) and activates STAT-6. IL13 initially binds IL-13Rα1 with low affinity and triggers association of IL4Rα, generating a high affinity heterodimeric receptor IL13R and eliciting downstream signals. IL13 also binds IL-13Rα2 with high affinity, which plays a role in a negative feedback system of IL13 signaling. IL13 is an important mediator of allergic inflammation and disease.