UPF3B

UPF3 regulator of nonsense transcripts homolog B (yeast)
File:PBB Protein UPF3B image.jpg PDB rendering based on 1uw4.
Available structures PDB Ortholog search: Template:Homologene2PDBe PDBe, Template:Homologene2uniprot RCSB List of PDB id codes 1uw4​
Identifiers
Symbols	UPF3B ; HUPF3B; RENT3B; UPF3X
External IDs	Template:OMIM5 Template:MGI HomoloGene: 11307
Gene ontology Molecular function Template:GNF GO Template:GNF GO Template:GNF GO Template:GNF GO Cellular component Template:GNF GO Template:GNF GO Biological process Template:GNF GO Template:GNF GO Template:GNF GO
RNA expression pattern
File:PBB GE UPF3B 218757 s at tn.png
More reference expression data
Orthologs
Template:GNF Ortholog box
Species	Human	Mouse
Entrez	n/a	n/a
Ensembl	n/a	n/a
UniProt	n/a	n/a
RefSeq (mRNA)	n/a	n/a
RefSeq (protein)	n/a	n/a
Location (UCSC)	n/a	n/a
PubMed search	n/a	n/a

UPF3 regulator of nonsense transcripts homolog B (yeast), also known as UPF3B, is a human gene.

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 X. Two splice variants encoding different isoforms have been found for this gene.

Further reading

• Cross SH, Charlton JA, Nan X, Bird AP (1994). "Purification of CpG islands using a methylated DNA binding column". Nat. Genet. 6 (3): 236–44. doi:10.1038/ng0394-236. PMID 8012384.CS1 maint: Multiple names: authors list (link)
• Wilson KF, Fortes P, Singh US; et al. (1999). "The nuclear cap-binding complex is a novel target of growth factor receptor-coupled signal transduction". J. Biol. Chem. 274 (7): 4166–73. PMID 9933612.CS1 maint: Explicit use of et al. (link) CS1 maint: Multiple names: authors list (link)
• Serin G, Gersappe A, Black JD; et al. (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. PMID 11113196.CS1 maint: Explicit use of et al. (link) CS1 maint: Multiple names: authors list (link)
• Lykke-Andersen J, Shu MD, Steitz JA (2001). "Human Upf proteins target an mRNA for nonsense-mediated decay when bound downstream of a termination codon". Cell. 103 (7): 1121–31. PMID 11163187.CS1 maint: Multiple names: authors list (link)
• Kim VN, Kataoka N, Dreyfuss G (2001). "Role of the nonsense-mediated decay factor hUpf3 in the splicing-dependent exon-exon junction complex". Science. 293 (5536): 1832–6. doi:10.1126/science.1062829. PMID 11546873.CS1 maint: Multiple names: authors list (link)
• Lykke-Andersen J, Shu MD, Steitz JA (2001). "Communication of the position of exon-exon junctions to the mRNA surveillance machinery by the protein RNPS1". Science. 293 (5536): 1836–9. doi:10.1126/science.1062786. PMID 11546874.CS1 maint: Multiple names: authors list (link)
• Lejeune F, Ishigaki Y, Li X, Maquat LE (2002). "The exon junction complex is detected on CBP80-bound but not eIF4E-bound mRNA in mammalian cells: dynamics of mRNP remodeling". EMBO J. 21 (13): 3536–45. doi:10.1093/emboj/cdf345. PMID 12093754.CS1 maint: Multiple names: authors list (link)
• Lykke-Andersen J (2003). "Identification of a human decapping complex associated with hUpf proteins in nonsense-mediated decay". Mol. Cell. Biol. 22 (23): 8114–21. PMID 12417715.
• Strausberg RL, Feingold EA, Grouse LH; et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMID 12477932.CS1 maint: Explicit use of et al. (link) CS1 maint: Multiple names: authors list (link)
• Chiu SY, Serin G, Ohara O, Maquat LE (2003). "Characterization of human Smg5/7a: a protein with similarities to Caenorhabditis elegans SMG5 and SMG7 that functions in the dephosphorylation of Upf1". RNA. 9 (1): 77–87. PMID 12554878.CS1 maint: Multiple names: authors list (link)
• Gehring NH, Neu-Yilik G, Schell T; et al. (2003). "Y14 and hUpf3b form an NMD-activating complex". Mol. Cell. 11 (4): 939–49. PMID 12718880.CS1 maint: Explicit use of et al. (link) CS1 maint: Multiple names: authors list (link)
• Schell T, Köcher T, Wilm M; et al. (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. PMID 12723973.CS1 maint: Explicit use of et al. (link) CS1 maint: Multiple names: authors list (link)
• Lejeune F, Li X, Maquat LE (2003). "Nonsense-mediated mRNA decay in mammalian cells involves decapping, deadenylating, and exonucleolytic activities". Mol. Cell. 12 (3): 675–87. PMID 14527413.CS1 maint: Multiple names: authors list (link)
• Ota T, Suzuki Y, Nishikawa T; et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID 14702039.CS1 maint: Explicit use of et al. (link) CS1 maint: Multiple names: authors list (link)
• Kadlec J, Izaurralde E, Cusack S (2004). "The structural basis for the interaction between nonsense-mediated mRNA decay factors UPF2 and UPF3". Nat. Struct. Mol. Biol. 11 (4): 330–7. doi:10.1038/nsmb741. PMID 15004547.CS1 maint: Multiple names: authors list (link)
• Lehner B, Sanderson CM (2004). "A protein interaction framework for human mRNA degradation". Genome Res. 14 (7): 1315–23. doi:10.1101/gr.2122004. PMID 15231747.
• Andersen JS, Lam YW, Leung AK; et al. (2005). "Nucleolar proteome dynamics". Nature. 433 (7021): 77–83. doi:10.1038/nature03207. PMID 15635413.CS1 maint: Explicit use of et al. (link) CS1 maint: Multiple names: authors list (link)
• Kim YK, Furic L, Desgroseillers L, Maquat LE (2005). "Mammalian Staufen1 recruits Upf1 to specific mRNA 3'UTRs so as to elicit mRNA decay". Cell. 120 (2): 195–208. doi:10.1016/j.cell.2004.11.050. PMID 15680326.CS1 maint: Multiple names: authors list (link)
• Gehring NH, Kunz JB, Neu-Yilik G; et al. (2005). "Exon-junction complex components specify distinct routes of nonsense-mediated mRNA decay with differential cofactor requirements". Mol. Cell. 20 (1): 65–75. doi:10.1016/j.molcel.2005.08.012. PMID 16209946.CS1 maint: Explicit use of et al. (link) CS1 maint: Multiple names: authors list (link)
• Kunz JB, Neu-Yilik G, Hentze MW; et al. (2006). "Functions of hUpf3a and hUpf3b in nonsense-mediated mRNA decay and translation". RNA. 12 (6): 1015–22. doi:10.1261/rna.12506. PMID 16601204.CS1 maint: Explicit use of et al. (link) CS1 maint: Multiple names: authors list (link)