Dual specificity tyrosine-phosphorylation-regulated kinase 1A is an enzyme that in humans is encoded by the DYRK1Agene. Alternative splicing of this gene generates several transcript variants differing from each other either in the 5' UTR or in the 3' coding region. These variants encode for at least five different isoforms.
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 the Drosophila mnb (minibrain) gene.
DYRK1A has also been shown to modulate plasma homocysteine levels in a mouse model of overexpression.
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. 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. Mutations in DYRK1A are also associated with autism spectrum disorder.
↑"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
↑"Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
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Chen H, Antonarakis SE (February 1997). "Localisation of a human homologue of the Drosophila mnb and rat Dyrk genes to chromosome 21q22.2". Human Genetics. 99 (2): 262–265. doi:10.1007/s004390050350. PMID9048932. S2CID26729330.
Smith DJ, Stevens ME, Sudanagunta SP, Bronson RT, Makhinson M, Watabe AM, O'Dell TJ, Fung J, Weier HU, Cheng JF, Rubin EM (May 1997). "Functional screening of 2 Mb of human chromosome 21q22.2 in transgenic mice implicates minibrain in learning defects associated with Down syndrome". Nature Genetics. 16 (1): 28–36. doi:10.1038/ng0597-28. PMID9140392. S2CID29490013.
Dahmane N, Ghezala GA, Gosset P, Chamoun Z, Dufresne-Zacharia MC, Lopes C, Rabatel N, Gassanova-Maugenre S, Chettouh Z, Abramowski V, Fayet E, Yaspo ML, Korn B, Blouin JL, Lehrach H, Poutska A, Antonarakis SE, Sinet PM, Créau N, Delabar JM (February 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.
Wang J, Kudoh J, Shintani A, Minoshima S, Shimizu N (September 1998). "Identification of two novel 5' noncoding exons in human MNB/DYRK gene and alternatively spliced transcripts". Biochemical and Biophysical Research Communications. 250 (3): 704–710. Bibcode:1998BBRC..250..704W. doi:10.1006/bbrc.1998.9392. PMID9784410.
Guimera J, Casas C, Estivill X, Pritchard M (May 1999). "Human minibrain homologue (MNBH/DYRK1): characterization, alternative splicing, differential tissue expression, and overexpression in Down syndrome". Genomics. 57 (3): 407–418. doi:10.1006/geno.1999.5775. PMID10329007.
Martí E, Altafaj X, Dierssen M, de la Luna S, Fotaki V, Alvarez M, Pérez-Riba M, Ferrer I, Estivill X (February 2003). "Dyrk1A expression pattern supports specific roles of this kinase in the adult central nervous system". Brain Research. 964 (2): 250–263. doi:10.1016/S0006-8993(02)04069-6. PMID12576186. S2CID35092325.
Jarhad DB, Mashelkar KK, Kim HR, Noh M, Jeong LS (November 2018). "Dual-Specificity Tyrosine Phosphorylation-Regulated Kinase 1A (DYRK1A) Inhibitors as Potential Therapeutics". Journal of Medicinal Chemistry. 61 (22): 9791–9810. doi:10.1021/acs.jmedchem.8b00185. PMID29985601. S2CID51606533.
External links
Overview of all the structural information available in the PDB for UniProt: Q13627 (Dual specificity tyrosine-phosphorylation-regulated kinase 1A) at the PDBe-KB.