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UPF3A
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
Aliases UPF3A, HRENT3A, UPF3, UPF3 regulator of nonsense transcripts homolog A (yeast), regulator of nonsense mediated mRNA decay
External IDs OMIM: 605530; MGI: 1914281; HomoloGene: 23395; GeneCards: UPF3A; OMA: UPF3A - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_023011
NM_080687

NM_025924

RefSeq (protein)

NP_080200

Location (UCSC)n/a Chr 8: 13.84 – 13.85 Mb
PubMed search [2] [3]
Wikidata
View/Edit Human View/Edit Mouse

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

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 RBM8A 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. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000038398Ensembl, 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. ^ a b c 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. ^ a b "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