DYRK4 or dual-specificity tyrosine-(Y)-phosphorylation regulated kinase 4 plays an important role in cell proliferation, survival, and development (1). Northern blot analysis shows DYRK4 is highly expressed in the testis with a very restricted expression to stage VIII postmeiotic spermatids (2). Analysis of a DYRK4 deficient mouse line showed that DYRK4 is dispensable for male fertility, hence suggesting a functional redundancy of some DYRK isoforms during spermiogenesis. DYRK4 protein contains a DYRK homology box in its N-terminal half, followed by a central kinase domain with a YxY loop.
1. Zhang, D. et.al:DYRK gene structure and erythroid-restricted features of DYRK3 gene expression. Genomics 85: 117-130, 2005.
2. Becker, W. et.al:Sequence characteristics, subcellular localization, and substrate specificity of DYRK-related kinases, a novel family of dual specificity protein kinases. J. Biol. Chem. 273: 25893-25902, 1998.
Sample Kinase Activity Plot. For specific information on a given lot, see related technical data sheet.
Sample Purity Data. For specific information on a given lot, see related technical data sheet.
Storage, Stability and Shipping:
Store product at –70oC. For optimal storage, aliquot target into smaller quantities after centrifugation and store at recommended temperature. For most favorable performance, avoid repeated handling and multiple freeze/thaw cycles.
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