Recombinant Human IL-13 Protein

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, and atopic dermatitis.

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