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Interleukin 23 subunit alpha
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Interleukin-23 subunit alpha is a protein that in humans is encoded by the IL23A gene.[5][6] The protein is also known as IL-23p19. It is one of the two subunits of the cytokine Interleukin-23.
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Interleukin-23 (IL-23) is a heterodimeric cytokine composed of an Interleukin 23 alpha subunit and an IL-12p40 subunit. The IL-12p40, also known as Interleukin 12 subunit beta, is used by both IL-23 (where it partners with IL-23p19) and IL-12 (where it partners with IL-12A).[5] A functional receptor for IL-23 (the IL-23 receptor) has been identified and is composed of IL-12R β1 and IL-23R.[7]