Human IL-13, Tag Free Protein (Active)
cat.: HA210908
Product name: Human IL-13, Tag Free
Catalog No.: HA210908
Bio-Activity: Measured in a cell proliferation assay using TF‑1 human erythroleukemic cells. The ED50 for this effect is 5-20 ng/mL.
Purity: >95% as determined by SDS-PAGE.
Endotoxin: Less than 1.0 EU per μg by the LAL method.
Formulation: Lyophilized from a 0.2 μm filtered solution of PBS, pH7.4, 5% Trehalose, 5% mannitol.
Background: Interleukin 13 (IL-13) is a protein that in humans is encoded by the IL13 gene. IL-13 was first cloned in 1993 and is located on chromosome 5q31.1 with a length of 1.4kb. It has a mass of 13 kDa and folds into 4 alpha helical bundles. The secondary structural features of IL-13 are similar to that of Interleukin 4 (IL-4); however it only has 25% sequence identity to IL-4 and is capable of IL-4 independent signaling. IL-13 is a cytokine secreted by T helper type 2 (Th2) cells, CD4 cells, natural killer T cell, mast cells, basophils, eosinophils and nuocytes. Interleukin-13 is a central regulator in IgE synthesis, goblet cell hyperplasia, mucus hypersecretion, airway hyperresponsiveness, fibrosis and chitinase up-regulation. It is a mediator of allergic inflammation and different diseases including asthma.
Source: HEK293
Storage: Please avoid repeated freeze-thaw cycles. Samples are stable for up to twelve months from date of receipt at -20℃ to -80℃ It is recommended that aliquot the reconstituted solution to minimize freeze-thaw cycles.
Reconstitution: Reconstitute at 250 μg/ml in sterile water.
Images
HA210908_1.jpg Fig1: Protein on SDS-PAGE under reducing (R) condition.
HA210908_2.jpg Fig2: Measured in a cell proliferation assay using TF‑1 human erythroleukemic cells. The ED50 for this effect is 5-20 ng/mL.
Note: All products are “FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE”.