UPF3B
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, Jul 2008].
Name | OMIM ID | Ensembl ID | HGNC ID | PHARMGKB ID | Map Location |
---|---|---|---|---|---|
OMIM IDMIM:300298 Ensembl IDEnsembl:ENSG00000125351 HGNC IDHGNC:HGNC:20439 PHARMGKB IDPA128394708 Map LocationXq24 |
Gene Categories:
TRANSPORTERGO terms in UPF3B
Term Type | Evidence Type | GO Term ID | GO Des. |
---|---|---|---|
MF | HDA | GO:0003723 | RNA binding |
MF | IBA | GO:0003729 | mRNA binding |
MF | IDA | GO:0003729 | mRNA binding |
MF | IPI | GO:0005515 | protein binding |
MF | NAS | GO:0017056 | structural constituent of nuclear pore |
CC | IDA | GO:0005634 | nucleus |
Gene expression in normal tissue: UPF3B
Gene-model tissue-cancer distribution: Bubble Plot
Gene-drug pathway distribution
Pathways in UPF3B
Database | Pathway ID | Pathway Des. |
---|---|---|
reactome | R-HSA-109688 | Cleavage of Growing Transcript in the Termination Region |
reactome | R-HSA-1266738 | Developmental Biology |
reactome | R-HSA-159236 | Transport of Mature mRNA derived from an Intron-Containing Transcript |
reactome | R-HSA-376176 | Signaling by ROBO receptors |
reactome | R-HSA-422475 | Axon guidance |
reactome | R-HSA-72163 | mRNA Splicing - Major Pathway |
Gene-Drug: Aster Plot
Drug ID | Drug Name | Model Num. |
---|---|---|
iGMDRD353 | PD0325901 | 2 |
Gene in drug-gene network: Network Plot

Gene-drug targets distribution
Gene Structure: PDB
Models in UPF3B
Model | Level | Reference ID | Tissue | Cancer | Drug | Clinical Response | Source | |
---|---|---|---|---|---|---|---|---|
No matching records found |