|Detection of Human and Mouse Jak1 by Western Blot. Western blot shows lysates of NIH‑3T3 mouse embryonic fibroblast cell line, Daudi human Burkitt's lymphoma cell line, HeLa human cervical epithelial carcinoma cell line, and LNCaP human prostate cancer cell line. PVDF membrane was probed with 1 µg/mL of Mouse Anti-Human/Mouse Jak1 Monoclonal Antibody (Catalog # MAB42601) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF007). A specific band was detected for Jak1 at approximately 110‑120 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.|
Janus Kinase 1 (Jak1) belongs to a family of protein tyrosine kinases that couple to cytokine receptors and are activated by ligand binding to these receptors. Activation of Jak1 occurs via phosphorylation at two adjacent tyrosine residues, Y1022 and Y1023, within the kinase domain. Jaks activate members of the STAT family of transcription factors by phosphorylating critical tyrosine regulatory sites. Jak1 is required for the activation of STAT1 and STAT2 in response to IFN-alpha.
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