Entry
Name
mRNA surveillance pathway - Salmo salar (Atlantic salmon)
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
Ortholog table
Other DBs
Organism
Salmo salar (Atlantic salmon) [GN:
sasa ]
Gene
106604442 upf3b; UPF3 regulator of nonsense transcripts homolog B (yeast) [KO:K14328 ]
106575588 SAP18; histone deacetylase complex subunit SAP18-like [KO:K14324 ]
106600278 apoptotic chromatin condensation inducer in the nucleus-like [KO:K12875 ]
106608850 apoptotic chromatin condensation inducer in the nucleus-like [KO:K12875 ]
106577794 apoptotic chromatin condensation inducer in the nucleus-like [KO:K12875 ]
106579139 SRRM1; serine/arginine repetitive matrix protein 1-like [KO:K13171 ]
106610815 SRRM1; serine/arginine repetitive matrix protein 1-like [KO:K13171 ]
106562230 CPSF5; cleavage and polyadenylation specificity factor subunit 5-like [KO:K14397 ]
106587420 CPSF5; cleavage and polyadenylation specificity factor subunit 5-like [KO:K14397 ]
106609799 cpsf6; cleavage and polyadenylation specific factor 6 [KO:K14398 ]
106562322 cleavage and polyadenylation specificity factor subunit 7-like [KO:K14398 ]
106593552 cleavage and polyadenylation specificity factor subunit 6-like [KO:K14398 ]
100380414 cpsf7; Cleavage and polyadenylation specificity factor subunit 7 [KO:K14398 ]
106570221 cleavage and polyadenylation specificity factor subunit 1-like [KO:K14401 ]
106588592 cleavage and polyadenylation specificity factor subunit 1-like [KO:K14401 ]
106608196 CPSF2; cleavage and polyadenylation specificity factor subunit 2 [KO:K14402 ]
100195522 cpsf2; cleavage and polyadenylation specific factor 2 [KO:K14402 ]
100194853 cpsf3; cleavage and polyadenylation specific factor 3 [KO:K14403 ] [EC:3.1.27.-]
106593953 cpsf4; cleavage and polyadenylation specific factor 4 [KO:K14404 ]
106611818 eukaryotic peptide chain release factor subunit 1-like [KO:K03265 ]
106568098 eukaryotic peptide chain release factor subunit 1-like [KO:K03265 ]
106609499 eukaryotic peptide chain release factor GTP-binding subunit ERF3A-like [KO:K03267 ]
106601640 eukaryotic peptide chain release factor GTP-binding subunit ERF3A [KO:K03267 ]
100195130 erf3b; Eukaryotic peptide chain release factor GTP-binding subunit ERF3B [KO:K03267 ]
106603992 smg6; SMG6, nonsense mediated mRNA decay factor [KO:K11124 ] [EC:3.1.-.-]
106587035 PP2AB; serine/threonine-protein phosphatase 2A catalytic subunit beta isoform-like [KO:K04382 ] [EC:3.1.3.16 ]
106612458 2AAB; serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A beta isoform [KO:K03456 ]
106607298 serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B delta isoform-like [KO:K04354 ]
106565222 serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B alpha isoform-like [KO:K04354 ]
106604263 serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B beta isoform-like [KO:K04354 ]
106603879 serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B beta isoform [KO:K04354 ]
106604865 serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B gamma isoform [KO:K04354 ]
106611902 serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B gamma isoform-like [KO:K04354 ]
106612152 serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B beta isoform-like [KO:K04354 ]
106567445 serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B beta isoform [KO:K04354 ]
106577354 serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B delta isoform-like [KO:K04354 ]
106579878 serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B alpha isoform-like [KO:K04354 ]
106563219 serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B alpha isoform-like [KO:K04354 ]
106577025 ppp2r2d; protein phosphatase 2 regulatory subunit Bdelta [KO:K04354 ]
106585558 serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B alpha isoform [KO:K04354 ]
106590778 serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B gamma isoform-like [KO:K04354 ]
106592990 serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B delta isoform-like [KO:K04354 ]
106600826 ppp2r3c; protein phosphatase 2 regulatory subunit B''gamma [KO:K11583 ]
106611177 serine/threonine-protein phosphatase 2A regulatory subunit B'' subunit gamma [KO:K11583 ]
106581654 serine/threonine-protein phosphatase 2A regulatory subunit B'' subunit beta-like [KO:K11583 ]
106574471 serine/threonine-protein phosphatase 2A regulatory subunit B'' subunit alpha-like [KO:K11583 ]
106575383 serine/threonine-protein phosphatase 2A regulatory subunit B'' subunit alpha-like [KO:K11583 ]
106611338 serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit gamma isoform-like [KO:K11584 ]
106599033 serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit epsilon isoform [KO:K11584 ]
106605890 serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit delta isoform [KO:K11584 ]
106609029 ppp2r5b; protein phosphatase 2 regulatory subunit B'beta [KO:K11584 ]
106608134 serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit gamma isoform-like [KO:K11584 ]
106607584 serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit alpha isoform-like [KO:K11584 ]
106610635 serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit gamma isoform [KO:K11584 ]
106571593 serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit gamma isoform-like [KO:K11584 ]
106571204 serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit alpha isoform-like [KO:K11584 ]
106578082 serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit beta isoform-like [KO:K11584 ]
106576729 ppp2r5d; protein phosphatase 2 regulatory subunit B'delta [KO:K11584 ]
100195340 2a5e; Serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit epsilon isoform [KO:K11584 ]
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
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