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Overview
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JAK3 is a protein encoded by the JAK3 gene which is approximately 125 kDa. JAK3 is localised to the endomembrane system. It is involved in RET signalling, common cytokine receptor gamma-chain family signalling pathways, Th17 cell differentiation and the IL-2 pathway. It is a non-receptor tyrosine kinase involved in various processes such as cell growth, development and differentiation. It mediates essential signalling events in both innate and adaptive immunity and plays a crucial role in hematopoiesis during T-cells development. In the cytoplasm it also plays a pivotal role in signal transduction via its association with type I receptors sharing the common subunit gamma such as IL2R, IL4R and IL7R. JAK3 is only expressed in NK cells and NK-like cell lines. Mutations in the JAK3 gene may result in severe combined immunodeficiency and Janus kinase-3 deficiency. STJ93795 was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen. This polyclonal antibody detects endogenous levels of JAK3 protein.
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Overview