Full name: UPF3A regulator of nonsense mediated mRNA decay

Gene type: protein coding

RefSeq status: REVIEWED

Also known as: HUPF3A; RENT3A; UPF3

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 13. Several splice variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2017]

Expression: Ubiquitous expression in testis (RPKM 21.9), thyroid (RPKM 13.7) and 25 other tissues

Gene size: 24217bp

Exon count: 14