Entry
Name
mRNA surveillance pathway - Calonectris borealis (Cory's shearwater)
Description
The mRNA surveillance pathway is a quality control mechanism that detects and degrades abnormal mRNAs. These pathways include nonsense-mediated mRNA decay (NMD), nonstop mRNA decay (NSD), and no-go decay (NGD). NMD is a mechanism that eliminates mRNAs containing premature translation-termination codons (PTCs). In vertebrates, PTCs trigger efficient NMD when located upstream of an exon junction complex (EJC). Upf3, together with Upf1 and Upf2, may signal the presence of the PTC to the 5'end of the transcript, resulting in decapping and rapid exonucleolytic digestion of the mRNA. In the NSD pathway, which targets mRNAs lacking termination codons, the ribosome is believed to translate through the 3' untranslated region and stall at the end of the poly(A) tail. NSD involves an eRF3-like protein, Ski7p, which is hypothesized to bind the empty A site of the ribosome and recruit the exosome to degrade the mRNA from the 3' end. NGD targets mRNAs with stalls in translation elongation for endonucleolytic cleavage in a process involving the Dom34 and Hbs1 proteins.
Class
Genetic Information Processing; Translation
BRITE hierarchy
Pathway map
Other DBs
Organism
Calonectris borealis (Cory's shearwater) [GN:
cbor ]
Gene
142073537 SMG5; nonsense-mediated mRNA decay factor SMG5 isoform X1 [KO:K11125 ]
142073961 PPP2R3B; serine/threonine-protein phosphatase 2A regulatory subunit B'' subunit beta isoform X1 [KO:K11583 ]
142074407 PPP2R1A; serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A alpha isoform isoform X1 [KO:K03456 ]
142074485 NXF1; LOW QUALITY PROTEIN: nuclear RNA export factor 1 [KO:K14284 ]
142075289 NCBP1; nuclear cap-binding protein subunit 1 isoform X1 [KO:K12882 ]
142075299 UPF3A; regulator of nonsense transcripts 3A isoform X1 [KO:K14328 ]
142077901 PCF11; pre-mRNA cleavage complex 2 protein Pcf11 isoform X1 [KO:K14400 ]
142080152 CPSF3; cleavage and polyadenylation specificity factor subunit 3 isoform X1 [KO:K14403 ] [EC:3.1.27.-]
142080815 PPP1CB; serine/threonine-protein phosphatase PP1-beta catalytic subunit isoform X1 [KO:K06269 ] [EC:3.1.3.16 ]
142080869 PPP2R5A; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit alpha isoform isoform X1 [KO:K11584 ]
142081019 PPP2R5D; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit delta isoform isoform X1 [KO:K11584 ]
142081717 PPP2R2C; protein phosphatase 2, regulatory subunit B, gamma isoform X1 [KO:K04354 ]
142081847 FIP1L1; pre-mRNA 3'-end-processing factor FIP1 isoform X1 [KO:K14405 ]
142082020 CPSF6; cleavage and polyadenylation specificity factor subunit 6 isoform X1 [KO:K14398 ]
142082656 PPP2R5E; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit epsilon isoform isoform X1 [KO:K11584 ]
142082720 PPP2R5C; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit gamma isoform isoform X1 [KO:K11584 ]
142082777 CPSF2; cleavage and polyadenylation specificity factor subunit 2 [KO:K14402 ]
142082912 PPP2R3C; serine/threonine-protein phosphatase 2A regulatory subunit B'' subunit gamma isoform X1 [KO:K11583 ]
142084501 PPP2R2D; serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B delta isoform isoform X1 [KO:K04354 ]
142085172 SMG7; nonsense-mediated mRNA decay factor SMG7 isoform X1 [KO:K14409 ]
142085719 PPP2R3A; serine/threonine-protein phosphatase 2A regulatory subunit B'' subunit alpha [KO:K11583 ]
142087153 NUDT21; cleavage and polyadenylation specificity factor subunit 5 [KO:K14397 ]
142087609 CSTF2; cleavage stimulation factor subunit 2 isoform X1 [KO:K14407 ]
142088177 CSTF3; cleavage stimulation factor subunit 3 isoform X1 [KO:K14408 ]
142088273 PPP1CA; serine/threonine-protein phosphatase PP1-alpha catalytic subunit isoform X1 [KO:K06269 ] [EC:3.1.3.16 ]
142088308 CPSF7; cleavage and polyadenylation specificity factor subunit 7 isoform X1 [KO:K14398 ]
142088602 ETF1; eukaryotic peptide chain release factor subunit 1 isoform X1 [KO:K03265 ]
142088767 PPP2R2B; serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B beta isoform isoform X1 [KO:K04354 ]
142089073 GSPT1; eukaryotic peptide chain release factor GTP-binding subunit ERF3A [KO:K03267 ]
142089206 CPSF4; cleavage and polyadenylation specificity factor subunit 4 [KO:K14404 ]
142089349 RNPS1; RNA-binding protein with serine-rich domain 1 isoform X1 [KO:K14325 ]
142089685 PABPC1L; polyadenylate-binding protein 1-like isoform X1 [KO:K13126 ]
142090440 MSI2; RNA-binding protein Musashi homolog 2 isoform X1 [KO:K14411 ]
142090585 SMG6; telomerase-binding protein EST1A isoform X1 [KO:K11124 ] [EC:3.1.-.-]
142091191 CPSF4L; putative cleavage and polyadenylation specificity factor subunit 4-like protein [KO:K14404 ]
142092851 SRRM1; serine/arginine repetitive matrix protein 1 isoform X1 [KO:K13171 ]
142093574 PPP2R2A; serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B alpha isoform isoform X1 [KO:K04354 ]
Reference
Authors
Maquat LE
Title
Nonsense-mediated mRNA decay: splicing, translation and mRNP dynamics.
Journal
Reference
Authors
Amrani N, Sachs MS, Jacobson A
Title
Early nonsense: mRNA decay solves a translational problem.
Journal
Reference
Authors
Eulalio A, Behm-Ansmant I, Izaurralde E
Title
P bodies: at the crossroads of post-transcriptional pathways.
Journal
Reference
Authors
Mandel CR, Bai Y, Tong L
Title
Protein factors in pre-mRNA 3'-end processing.
Journal
Reference
Authors
Clement SL, Lykke-Andersen J
Title
No mercy for messages that mess with the ribosome.
Journal
Related pathway
KO pathway