UPF3A

Regulator of nonsense transcripts 3A is a protein that in humans is encoded by the UPF3A gene.[4][5][6]

UPF3A
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
AliasesUPF3A, HRENT3A, UPF3, UPF3 regulator of nonsense transcripts homolog A (yeast), regulator of nonsense mediated mRNA decay
External IDsOMIM: 605530 MGI: 1914281 HomoloGene: 23395 GeneCards: UPF3A
RNA expression pattern




More reference expression data
Orthologs
SpeciesHumanMouse
Entrez

65110

67031

Ensembl

ENSG00000169062

ENSMUSG00000038398

UniProt

Q9H1J1

Q3ULJ3

RefSeq (mRNA)

NM_023011
NM_080687

NM_025924

RefSeq (protein)

NP_080200

Location (UCSC)n/aChr 8: 13.79 – 13.8 Mb
PubMed search[2][3]
Wikidata
View/Edit HumanView/Edit Mouse

This gene encodes a protein that is part of a post-splicing multiprotein complex involved in both mRNA nuclear export and mRNA surveillance. The encoded protein is one of two functional homologs to yeast Upf3p. mRNA surveillance detects exported mRNAs with truncated open reading frames and initiates nonsense-mediated mRNA decay (NMD). When translation ends upstream from the last exon-exon junction, this triggers NMD to degrade mRNAs containing premature stop codons. This protein binds to the mRNA and remains bound after nuclear export, acting as a nucleocytoplasmic shuttling protein. It forms with Y14 a complex that binds specifically 20 nt upstream of exon-exon junctions. This gene is located on the long arm of chromosome 13. Two splice variants encoding different isoforms have been found for this gene.[6]

Interactions

UPF3A has been shown to interact with RBM8A,[7] UPF2[5][8] and UPF1.[5][9][10]

References

  1. GRCm38: Ensembl release 89: ENSMUSG00000038398 - Ensembl, May 2017
  2. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  3. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. Serin G, Gersappe A, Black JD, Aronoff R, Maquat LE (January 2001). "Identification and characterization of human orthologues to Saccharomyces cerevisiae Upf2 protein and Upf3 protein (Caenorhabditis elegans SMG-4)". Mol Cell Biol. 21 (1): 209–23. doi:10.1128/MCB.21.1.209-223.2001. PMC 88795. PMID 11113196.
  5. Lykke-Andersen J, Shu MD, Steitz JA (February 2001). "Human Upf proteins target an mRNA for nonsense-mediated decay when bound downstream of a termination codon". Cell. 103 (7): 1121–31. doi:10.1016/S0092-8674(00)00214-2. PMID 11163187. S2CID 18417600.
  6. "Entrez Gene: UPF3A UPF3 regulator of nonsense transcripts homolog A (yeast)".
  7. Kim, V N; Kataoka N; Dreyfuss G (September 2001). "Role of the nonsense-mediated decay factor hUpf3 in the splicing-dependent exon-exon junction complex". Science. 293 (5536): 1832–6. Bibcode:2001Sci...293.1832K. doi:10.1126/science.1062829. ISSN 0036-8075. PMID 11546873. S2CID 12018200.
  8. Lejeune, Fabrice; Li Xiaojie; Maquat Lynne E (September 2003). "Nonsense-mediated mRNA decay in mammalian cells involves decapping, deadenylating, and exonucleolytic activities". Mol. Cell. 12 (3): 675–87. doi:10.1016/S1097-2765(03)00349-6. ISSN 1097-2765. PMID 14527413.
  9. Schell, Thomas; Köcher Thomas; Wilm Matthias; Seraphin Bertrand; Kulozik Andreas E; Hentze Matthias W (August 2003). "Complexes between the nonsense-mediated mRNA decay pathway factor human upf1 (up-frameshift protein 1) and essential nonsense-mediated mRNA decay factors in HeLa cells". Biochem. J. 373 (Pt 3): 775–83. doi:10.1042/BJ20021920. ISSN 0264-6021. PMC 1223536. PMID 12723973.
  10. Yamashita, A; Ohnishi T; Kashima I; Taya Y; Ohno S (September 2001). "Human SMG-1, a novel phosphatidylinositol 3-kinase-related protein kinase, associates with components of the mRNA surveillance complex and is involved in the regulation of nonsense-mediated mRNA decay". Genes Dev. 15 (17): 2215–28. doi:10.1101/gad.913001. ISSN 0890-9369. PMC 312771. PMID 11544179.

Further reading


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