DYRK1A
Lua error in Module:Infobox_gene at line 33: attempt to index field 'wikibase' (a nil value). Dual specificity tyrosine-phosphorylation-regulated kinase 1A is an enzyme that in humans is encoded by the DYRK1A gene.[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]
Function
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]
Interactions
DYRK1A has been shown to interact with WDR68.[6]
References
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Further reading
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