The interleukin-13 receptor is a type I cytokine receptor binding Interleukin-13. It consists of two subunits encoded by IL13RA1 and IL4R respectively. These two genes encode the proteins IL-13Rα1 and IL-4Rα. These form a dimer with IL-13 binding to the IL-13Rα1 chain and IL-4Rα stabilises this interaction. This IL-13 receptor can also instigate IL-4 signalling.
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