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AZ191 is a cell-permeable azaindole that inhibits the serine/threonine kinase activity of DYRK1B (IC50 = 17 nM) with 5-fold and 110-fold selectivity against the related family members DYRK1A and DYRK2, respectively.1 This compound has been used as a probe to elucidate the mechanism of DYRK1B regulation of cell cycle progression.1
WARNING This product is not for human or veterinary use.
1. A novel DYRK1B inhibitor AZ191 demonstrates that DYRK1B acts independently of GSK3β to phosphorylate cyclin D1 at Thr(286), not Thr(288). Biochem. J. 457(1), 43-56 (2014).