Human IL-23 R/IL-12 R beta 1(Luc) HEK293 Reporter Cell

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IL-23 is a heterodimeric cytokine composed of p40 and p19 subunits. It binds to its IL-23 receptor complex composed of IL-12RB1 and IL-23R subunits, which are associated with the Jak family members, Tyk2 and Jak2, respectively. IL-23 binding to its receptor complex results in Jak2-mediated phosphorylation of tyrosine residues located in the intracellular domain of the IL-23R subunit. Phosphorylated tyrosine residues serve as a docking site for STAT3 molecules, which in turn get phosphorylated. Phospho-STAT3 proteins homodimerize and translocate into the nucleus inducing transcription of cytokines, such as IL-17A, IL-17F, IL-22 and IFN-.

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