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61E3.4 61E3.4 EIF4A3 EIF4A3 UPF1 UPF1 UPF2 UPF2 SMG1 SMG1 UPF3A UPF3A SMG6 SMG6 SMG5 SMG5 EIF4G1 EIF4G1 UPF3B UPF3B RNPS1 RNPS1
UPF2 regulator of nonsense transcripts homolog in Homo sapiens
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UPF2UPF2 regulator of nonsense transcripts homolog (yeast) (1272 aa)    
Predicted Functional Partners:
UPF1
UPF1 regulator of nonsense transcripts homolog (yeast); RNA-dependent helicase and ATPase required for nonsense- mediated decay (NMD) of mRNAs containing premature stop codons. Is recruited to mRNAs upon translation termination and undergoes a cycle of phosphorylation and dephosphorylation; its phosphorylation appears to be a key step in NMD. Recruited by release factors to stalled ribosomes together with the SMG1C protein kinase complex to form the transient SURF (SMG1-UPF1-eRF1- eRF3) complex. In EJC-dependent NMD, the SURF complex associates with the exon junction complex (EJC) (loc [...] (1118 aa)
      score_image score_image score_image score_image   0.999
UPF3A
UPF3 regulator of nonsense transcripts homolog A (yeast); Involved in nonsense-mediated decay (NMD) of mRNAs containing premature stop codons by associating with the nuclear exon junction complex (EJC) and serving as link between the EJC core and NMD machinery. Recruits UPF2 at the cytoplasmic side of the nuclear envelope and the subsequent formation of an UPF1-UPF2- UPF3 surveillance complex (including UPF1 bound to release factors at the stalled ribosome) is believed to activate NMD. However, UPF3A is shown to be only marginally active in NMD as compared to UPF3B. Binds spliced mRNA [...] (476 aa)
        score_image score_image score_image   0.999
UPF3B
UPF3 regulator of nonsense transcripts homolog B (yeast); Involved in nonsense-mediated decay (NMD) of mRNAs containing premature stop codons by associating with the nuclear exon junction complex (EJC) and serving as link between the EJC core and NMD machinery. Recruits UPF2 at the cytoplasmic side of the nuclear envelope and the subsequent formation of an UPF1-UPF2- UPF3 surveillance complex (including UPF1 bound to release factors at the stalled ribosome) is believed to activate NMD. In cooperation with UPF2 stimulates both ATPase and RNA helicase activities of UPF1. Binds spliced mR [...] (483 aa)
        score_image score_image score_image   0.999
RNPS1
RNA binding protein S1, serine-rich domain (305 aa)
        score_image score_image score_image   0.999
SMG1
smg-1 homolog, phosphatidylinositol 3-kinase-related kinase (C. elegans); Serine/threonine protein kinase involved in both mRNA surveillance and genotoxic stress response pathways. Recognizes the substrate consensus sequence [ST]-Q. Plays a central role in nonsense-mediated decay (NMD) of mRNAs containing premature stop codons by phosphorylating UPF1/RENT1. Recruited by release factors to stalled ribosomes together with SMG8 and SMG9 (forming the SMG1C protein kinase complex), and UPF1 to form the transient SURF (SMG1-UPF1-eRF1-eRF3) complex. In EJC-dependent NMD, the SURF complex asso [...] (3661 aa)
        score_image score_image score_image   0.999
SMG5
smg-5 homolog, nonsense mediated mRNA decay factor (C. elegans); Plays a role in nonsense-mediated mRNA decay. Does not have RNase activity by itself. Promotes dephosphorylation of UPF1. Together with SMG7 is thought to provide a link to the mRNA degradation machinery involving exonucleolytic pathways, and to serve as an adapter for UPF1 to protein phosphatase 2A (PP2A), thereby triggering UPF1 dephosphorylation. Necessary for TERT activity (1016 aa)
          score_image score_image   0.982
61E3.4
Putative NPIP-like protein LOC613037 (1138 aa)
        score_image       0.981
EIF4A3
eukaryotic translation initiation factor 4A3; ATP-dependent RNA helicase. Component of a splicing- dependent multiprotein exon junction complex (EJC) deposited at splice junction on mRNAs. The EJC is a dynamic structure consisting of a few core proteins and several more peripheral nuclear and cytoplasmic associated factors that join the complex only transiently either during EJC assembly or during subsequent mRNA metabolism. Core components of the EJC, that remains bound to spliced mRNAs throughout all stages of mRNA metabolism, functions to mark the position of the exon-exon junction [...] (411 aa)
        score_image score_image score_image   0.979
SMG6
smg-6 homolog, nonsense mediated mRNA decay factor (C. elegans); Component of the telomerase ribonucleoprotein (RNP) complex that is essential for the replication of chromosome termini. May have a general role in telomere regulation. Promotes in vitro the ability of TERT to elongate telomeres. Overexpression induces telomere uncapping, chromosomal end-to-end fusions (telomeric DNA persists at the fusion points) and did not perturb TRF2 telomeric localization. Binds to the single-stranded 5’- (GTGTGG)(4)GTGT-3’ telomeric DNA, but not to a telomerase RNA template component (TER) (1419 aa)
          score_image score_image   0.978
EIF4G1
eukaryotic translation initiation factor 4 gamma, 1; Component of the protein complex eIF4F, which is involved in the recognition of the mRNA cap, ATP-dependent unwinding of 5’-terminal secondary structure and recruitment of mRNA to the ribosome (1606 aa)
        score_image score_image score_image   0.978
Your Current Organism:
Homo sapiens
NCBI taxonomy Id: 9606
Other names: H. sapiens, Homo, Homo sapiens, human, man
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