Dual specificity tyrosine-phosphorylation-regulated kinase 1A is an enzyme that in humans is encoded by the DYRK1A gene. [5] Alternative splicing of this gene generates several transcript variants differing from each other either in the 5' UTR or in the 3' coding region. [6] These variants encode for at least five different isoforms. [7]
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. [7]
DYRK1A has also been shown to modulate plasma homocysteine levesl in a mouse model of overexpression. [8]
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. [7] 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. [6] Mutations in DYRK1A are also associated with autism spectrum disorder. [9]
Rosie, the protagonist of BBC sitcom There She Goes , has the DYRK1A gene, as revealed in the show's final episode. [11]
Research of Down syndrome-related genes is based on studying the genes located on chromosome 21. In general, this leads to an overexpression of the genes. Understanding the genes involved may help to target medical treatment to individuals with Down syndrome. It is estimated that chromosome 21 contains 200 to 250 genes. Recent research has identified a region of the chromosome that contains the main genes responsible for the pathogenesis of Down syndrome, located proximal to 21q22.3. The search for major genes involved in Down syndrome characteristics is normally in the region 21q21–21q22.3.
Son of sevenless homolog 1 is a protein that in humans is encoded by the SOS1 gene.
Aurora kinase B is a protein that functions in the attachment of the mitotic spindle to the centromere.
The related to receptor tyrosine kinase (RYK) gene encodes the protein Ryk.
WEE1 homolog , also known as WEE1, is a protein which in humans is encoded by the WEE1 gene.
Wiskott–Aldrich syndrome protein family member 2 is a protein that in humans is encoded by the WASF2 gene.
Proto-oncogene tyrosine-protein kinase Yes is a non-receptor tyrosine kinase that in humans is encoded by the YES1 gene.
Segment polarity protein dishevelled homolog DVL-1 is a protein that in humans is encoded by the DVL1 gene.
Receptor-type tyrosine-protein phosphatase epsilon is an enzyme that in humans is encoded by the PTPRE gene.
Disks large-associated protein 5 (DAP-5) also known as discs large homolog 7 (DLG7) or hepatoma up-regulated protein (HURP) is a protein that in humans is encoded by the DLGAP5 gene.
Protein flightless-1 homolog is a protein that in humans is encoded by the FLII gene.
Protein diaphanous homolog 2 is a protein that in humans is encoded by the DIAPH2 gene.
Tyrosine-protein kinase BLK, also known as B lymphocyte kinase, is a non-receptor tyrosine kinase that in humans is encoded by the BLK gene. It is of the Src family of tyrosine kinases.
Dual specificity tyrosine-phosphorylation-regulated kinase 1B is an enzyme that in humans is encoded by the DYRK1B gene.
Tyrosine-protein kinase TXK is an enzyme that in humans is encoded by the TXK gene.
Large tumor suppressor kinase 2 (LATS2) is an enzyme that in humans is encoded by the LATS2 gene.
Lethal(2) giant larvae protein homolog 1 is a protein that in humans is encoded by the LLGL1 gene.
Dual specificity tyrosine-phosphorylation-regulated kinase 2 is an enzyme, in particular a dual-specificity kinase, that in humans is encoded by the DYRK2 gene.
Dual specificity tyrosine-phosphorylation-regulated kinase 3 is an enzyme that in humans is encoded by the DYRK3 gene.
Wee1 is a nuclear kinase belonging to the Ser/Thr family of protein kinases in the fission yeast Schizosaccharomyces pombe. Wee1 has a molecular mass of 96 kDa and is a key regulator of cell cycle progression. It influences cell size by inhibiting the entry into mitosis, through inhibiting Cdk1. Wee1 has homologues in many other organisms, including mammals.
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