DYRK3: ProductsDYRK3 (Dual-specificity tyrosine [Y] phosphorylation regulated kinase 3; also REDK) is a member of the MNB/DYRK subfamily, CMGC Ser/Thr protein kinase family of enzymes. DYRK3 is expressed in testis, erythroid-lineage precursors and other tissues, and shows dual substrate specificity. Autophosphorylation on Tyr369 leads to self-activation, while target proteins are Ser/Thr phosphorylated. Targets include CREB and histone 2B. Human DYRK3 is 588 amino acids (aa) in length, and contains one kinase catalytic domain (aa 209-522). There are two potential isoform variants that show either a six aa substitution for aa 1-26, or this same substitution in combination with a premature truncation after Gln263.