The IL-13R alpha 1 protein binds to IL13 with low affinity and, when combined with IL4RA, forms a functional IL13 receptor. It also functions together with IL4RA as an alternative accessory protein for IL4 signaling. IL-13R alpha 1 Protein, Cynomolgus (HEK293, His) is the recombinant cynomolgus-derived IL-13R alpha 1 protein, expressed by HEK293 , with C-His labeled tag.