Database of mammalian genes
Home

Home Search Browse Statistics User guide FAQs Links Questions Contribute Download


Gene Protein Transcript Promoter Expression GO/PPI PubMed Cross reference

Gene information for UPF3B (Homo sapiens)
(Information is obtained from NCBI Gene database)
Entrez gene ID65109
Official gene symbolUPF3B
Full nameUPF3 regulator of nonsense transcripts homolog B (yeast)
Aliases,HUPF3B,MRXS14,RENT3B,UPF3X,
Gene summaryThis 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]
LocationChromosome: X   Locus: Xq25-q26
Gene position118986991 - 118967989  Map Viewer
Gene orientationminus
Gene size19003 bp
Gene sequence
OMIM ID300298