Entry
Name
mRNA surveillance pathway - Cyprinodon tularosa (White Sands pupfish)
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
Cyprinodon tularosa (White Sands pupfish) [GN:
ctul ]
Gene
119783341 upf3a; regulator of nonsense transcripts 3A isoform X1 [KO:K14328 ]
119786305 upf3b; regulator of nonsense transcripts 3B isoform X1 [KO:K14328 ]
119773421 acin1b; apoptotic chromatin condensation inducer 1b isoform X1 [KO:K12875 ]
119793336 acin1a; apoptotic chromatin condensation inducer in the nucleus [KO:K12875 ]
119773180 RNA-binding protein with serine-rich domain 1-like isoform X1 [KO:K14325 ]
119774184 srrm1; serine/arginine repetitive matrix protein 1 isoform X1 [KO:K13171 ]
119771784 taf15; TATA-binding protein-associated factor 2N isoform X1 [KO:K13098 ]
119798971 nudt21; cleavage and polyadenylation specificity factor subunit 5 [KO:K14397 ]
119782704 cleavage and polyadenylation specificity factor subunit 7-like [KO:K14398 ]
119786204 cpsf6; cleavage and polyadenylation specificity factor subunit 6 isoform X1 [KO:K14398 ]
119781170 pcf11; LOW QUALITY PROTEIN: pre-mRNA cleavage complex 2 protein Pcf11 [KO:K14400 ]
119785227 cpsf1; cleavage and polyadenylation specificity factor subunit 1 [KO:K14401 ]
119771558 cpsf2; cleavage and polyadenylation specificity factor subunit 2 [KO:K14402 ]
119797842 cleavage and polyadenylation specificity factor subunit 3-like [KO:K14403 ] [EC:3.1.27.-]
119773677 cleavage and polyadenylation specificity factor subunit 3 [KO:K14403 ] [EC:3.1.27.-]
119771317 cpsf4; cleavage and polyadenylation specificity factor subunit 4 [KO:K14404 ]
119779096 wdr33; pre-mRNA 3' end processing protein WDR33 isoform X1 [KO:K15542 ]
119786292 cstf2; cleavage stimulation factor subunit 2 isoform X1 [KO:K14407 ]
119782372 msi1b; RNA-binding protein Musashi homolog 1b isoform X1 [KO:K14411 ]
119782481 gspt1; eukaryotic peptide chain release factor GTP-binding subunit ERF3A [KO:K03267 ]
119790279 smg6; telomerase-binding protein EST1A isoform X1 [KO:K11124 ] [EC:3.1.-.-]
119797963 ppp2cab; serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform [KO:K04382 ] [EC:3.1.3.16 ]
119792089 ppp2r1bb; serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A beta isoform [KO:K03456 ]
119783921 ppp2r2aa; serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B alpha isoform isoform X1 [KO:K04354 ]
119796543 serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B beta isoform isoform X1 [KO:K04354 ]
119797029 ppp2r2d; serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B delta isoform [KO:K04354 ]
119772060 serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B alpha isoform-like [KO:K04354 ]
119773232 serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B beta isoform isoform X1 [KO:K04354 ]
119773837 ppp2r2ca; protein phosphatase 2, regulatory subunit B, gamma a [KO:K04354 ]
119774711 ppp2r3c; serine/threonine-protein phosphatase 2A regulatory subunit B'' subunit gamma [KO:K11583 ]
119788177 ppp2r3a; serine/threonine-protein phosphatase 2A regulatory subunit B'' subunit alpha isoform X1 [KO:K11583 ]
119783327 ppp2r3b; serine/threonine-protein phosphatase 2A regulatory subunit B'' subunit beta isoform X1 [KO:K11583 ]
119787836 ppp2r5a; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit alpha isoform [KO:K11584 ]
119794782 ppp2r5cb; protein phosphatase 2, regulatory subunit B', gamma b isoform X1 [KO:K11584 ]
119776390 ppp2r5b; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit beta isoform [KO:K11584 ]
119791930 ppp2r5d; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit delta isoform [KO:K11584 ]
119792149 serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit epsilon isoform [KO:K11584 ]
119773682 serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit gamma isoform isoform X1 [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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