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Description for Protein UPF3B

UPF3 regulator of nonsense transcripts homolog B (yeast)
14 total interacting proteins; 10 platelet interacting proteins
Icon Book Platelet Evidence (proteome studies/others : 0/0)
(Not detected in platelets)
Summary:
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. [provided by RefSeq] (PubMed Links)
Domains and Motifs:
  • NLS: Nuclear localization signal
  • CC: Coiled Coil
  • NES: Nuclear Export Signal
    • Gene Ontology:
    Gene Ontology Annotations
    KEGG - Enzyme ID(s):
    None Available
    KEGG - Orthology:
    None Available
    KEGG - Pathway(s):
    None Available
    Nomenclature / Alternative Names:
    UPF3X; RENT3B; Regulator of nonsense transcripts 3B; UPF3 regulator of nonsense transcripts homolog B isoform 2; UPF3 regulator of nonsense transcripts homolog B isoform 1; HUPF3B; UPF3 regulator of nonsense transcripts homolog B
    Approved Symbol:
    UPF3B
    (De-) Phosphorylations:
    Total (de-) phosphorylation sites: 13
    Human (de-) phosphorylation sites: 13; No platelet phosphorylation sites
    Phosphorylation Targets:
    Total phosphorylation targets: 0
    Human phosphorylation targets: 0;Predicted platelet targets: 0
    		Protein Characteristics:
    Isoform-specific Information
    Icon DrugsAssociated Drugs (DrugBank Accession):

    None Available

    Associated Genetic Diseases:

    None Available
    		Predicted Transmembrane Domains:
  • Isoform 2 : 0
  • Isoform 1 : 0
    • Additional Identifiers:

    HPRD: 02247 Entrez Gene ID: 65109 OMIM ID: 300298 Swissprot Accession: Q9BZI7;