DYRK gene structure and erythroid-restricted features of DYRK3 gene expression.
DYRKs are an emerging family of dual-specificity kinases that play key roles in cell proliferation, survival, and development. Up to seven mammalian DYRK isoforms have been reported, but only the DYRK1A gene (and its products) has been well characterized. Defined here are the genomic structures (and phylogenetics) of DYRK3, four additional murine and/or human DYRKs, and two related HIPK genes. For murine DYRK3, direct BAC sequences are provided, a basis for differential processing of murine versus human transcripts is defined, and tissue expression profiles plus a functional DYRK3 promoter are characterized. Unlike complex DYRKs 1A, 1B, and 4A, DYRK3 and DYRK2 possess simple 4-exon structures. For DYRK3, expression is strong in erythroid cells and testis, but is also detected in adult kidney and liver in situ. In addition, a 1930-bp DYRK3 promoter drives erythroid expression and transcript expression is inhibited sharply on GATA1-induced G1E cell differentiation.[1]References
- DYRK gene structure and erythroid-restricted features of DYRK3 gene expression. Zhang, D., Li, K., Erickson-Miller, C.L., Weiss, M., Wojchowski, D.M. Genomics (2005) [Pubmed]
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