Dual specificity tyrosine-phosphorylation-regulated kinase 1A is an enzyme that in humans is encoded by the DYRK1Agene.[1] Alternative splicing of this gene generates several transcript variants differing from each other either in the 5' UTR or in the 3' coding region.[2] These variants encode at least five different isoforms.[3]
DYRK1A is a member of the dual-specificity tyrosine phosphorylation-regulated kinase (DYRK) family. This member contains a nuclear targeting signal sequence, a protein kinase domain, a leucine zipper motif, and a highly conservative 13-consecutive-histidine repeat. It catalyzes its autophosphorylation on serine/threonine and tyrosine residues. It may play a significant role in a signaling pathway regulating cell proliferation and may be involved in brain development. This gene is a homolog of Drosophila mnb (minibrain) gene and rat Dyrk gene.[3]
Dyrk1a has also been shown to modulate plasma homocysteine level in a mouse model of overexpression.[4]
Clinical significance
DYRK1A is localized in the Down syndrome critical region of chromosome 21, and is considered to be a strong candidate gene for learning defects associated with Down syndrome.[3] In addition, a polymorphism (SNP) in DYRK1A was found to be associated with HIV-1 replication in monocyte-derived macrophages, as well as with slower progression to AIDS in two independent cohorts of HIV-1-infected individuals.[2] Mutations in DYRK1A are also associated with Autism spectrum disorder.[5]
↑Guimera J, Pritchard M, Nadal M, Estivill X (Sep 1997). "Minibrain (MNBH) is a single copy gene mapping to human chromosome 21q22.2". Cytogenet Cell Genet. 77 (3–4): 182–4. doi:10.1159/000134571. PMID9284911.
↑Skurat AV, Dietrich AD (January 2004). "Phosphorylation of Ser640 in muscle glycogen synthase by DYRK family protein kinases". J. Biol. Chem. 279 (4): 2490–8. doi:10.1074/jbc.M301769200. PMID14593110.
Further reading
Hämmerle B, Elizalde C, Galceran J, et al. (2004). "The MNB/DYRK1A protein kinase: neurobiological functions and Down syndrome implications". J. Neural Transm. Suppl. (67): 129–37. doi:10.1007/978-3-7091-6721-2_11. PMID15068245.
Galceran J, de Graaf K, Tejedor FJ, Becker W (2004). "The MNB/DYRK1A protein kinase: genetic and biochemical properties". J. Neural Transm. Suppl. (67): 139–48. doi:10.1007/978-3-7091-6721-2_12. PMID15068246.
Schultz SJ, Nigg EA (1994). "Identification of 21 novel human protein kinases, including 3 members of a family related to the cell cycle regulator nimA of Aspergillus nidulans". Cell Growth Differ. 4 (10): 821–30. PMID8274451.
Shindoh N, Kudoh J, Maeda H, et al. (1996). "Cloning of a human homolog of the Drosophila minibrain/rat Dyrk gene from "the Down syndrome critical region" of chromosome 21". Biochem. Biophys. Res. Commun. 225 (1): 92–9. doi:10.1006/bbrc.1996.1135. PMID8769099.
Guimerá J, Casas C, Pucharcòs C, et al. (1997). "A human homologue of Drosophila minibrain (MNB) is expressed in the neuronal regions affected in Down syndrome and maps to the critical region". Hum. Mol. Genet. 5 (9): 1305–10. doi:10.1093/hmg/5.9.1305. PMID8872470.
Song WJ, Sternberg LR, Kasten-Sportès C, et al. (1997). "Isolation of human and murine homologues of the Drosophila minibrain gene: human homologue maps to 21q22.2 in the Down syndrome "critical region"". Genomics. 38 (3): 331–9. doi:10.1006/geno.1996.0636. PMID8975710.
Ohira M, Seki N, Nagase T, et al. (1997). "Gene identification in 1.6-Mb region of the Down syndrome region on chromosome 21". Genome Res. 7 (1): 47–58. doi:10.1101/gr.7.1.47. PMID9037601.
Chen H, Antonarakis SE (1997). "Localisation of a human homologue of the Drosophila mnb and rat Dyrk genes to chromosome 21q22.2". Hum. Genet. 99 (2): 262–5. doi:10.1007/s004390050350. PMID9048932.
Smith DJ, Stevens ME, Sudanagunta SP, et al. (1997). "Functional screening of 2 Mb of human chromosome 21q22.2 in transgenic mice implicates minibrain in learning defects associated with Down syndrome". Nat. Genet. 16 (1): 28–36. doi:10.1038/ng0597-28. PMID9140392.
Dahmane N, Ghezala GA, Gosset P, et al. (1998). "Transcriptional map of the 2.5-Mb CBR-ERG region of chromosome 21 involved in Down syndrome". Genomics. 48 (1): 12–23. doi:10.1006/geno.1997.5146. PMID9503011.
Xu X, Rich ES, Seldin DC (1998). "Murine protein kinase CK2 alpha': cDNA and genomic cloning and chromosomal mapping". Genomics. 48 (1): 79–86. doi:10.1006/geno.1997.5154. PMID9503019.
Becker W, Weber Y, Wetzel K, et al. (1998). "Sequence characteristics, subcellular localization, and substrate specificity of DYRK-related kinases, a novel family of dual specificity protein kinases". J. Biol. Chem. 273 (40): 25893–902. doi:10.1074/jbc.273.40.25893. PMID9748265.
Wang J, Kudoh J, Shintani A, et al. (1998). "Identification of two novel 5' noncoding exons in human MNB/DYRK gene and alternatively spliced transcripts". Biochem. Biophys. Res. Commun. 250 (3): 704–10. doi:10.1006/bbrc.1998.9392. PMID9784410.
Guimera J, Casas C, Estivill X, Pritchard M (1999). "Human minibrain homologue (MNBH/DYRK1): characterization, alternative splicing, differential tissue expression, and overexpression in Down syndrome". Genomics. 57 (3): 407–18. doi:10.1006/geno.1999.5775. PMID10329007.
Hattori M, Fujiyama A, Taylor TD, et al. (2000). "The DNA sequence of human chromosome 21". Nature. 405 (6784): 311–9. doi:10.1038/35012518. PMID10830953.
Mao J, Maye P, Kogerman P, et al. (2002). "Regulation of Gli1 transcriptional activity in the nucleus by Dyrk1". J. Biol. Chem. 277 (38): 35156–61. doi:10.1074/jbc.M206743200. PMID12138125.
Martí E, Altafaj X, Dierssen M, et al. (2003). "Dyrk1A expression pattern supports specific roles of this kinase in the adult central nervous system". Brain Res. 964 (2): 250–63. doi:10.1016/S0006-8993(02)04069-6. PMID12576186.