Entry
Name
mRNA surveillance pathway - Paramisgurnus dabryanus (large-scale loach)
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
Paramisgurnus dabryanus (large-scale loach) [GN:
pdab ]
Gene
135720382 gspt1; eukaryotic peptide chain release factor GTP-binding subunit ERF3A [KO:K03267 ]
135730348 ppp2r2aa; serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B alpha isoform [KO:K04354 ]
135730819 ppp2r5b; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit beta isoform isoform X1 [KO:K11584 ]
135732934 ppp2r5d; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit delta isoform [KO:K11584 ]
135733396 ppp2r3b; serine/threonine-protein phosphatase 2A regulatory subunit B'' subunit beta isoform X1 [KO:K11583 ]
135733402 upf3a; regulator of nonsense transcripts 3A isoform X1 [KO:K14328 ]
135734469 ppp2r3c; serine/threonine-protein phosphatase 2A regulatory subunit B'' subunit gamma [KO:K11583 ]
135735846 ppp2r2ca; protein phosphatase 2, regulatory subunit B, gamma a [KO:K04354 ]
135735849 fip1l1b; pre-mRNA 3'-end-processing factor FIP1 isoform X1 [KO:K14405 ]
135738403 ppp2r5cb; protein phosphatase 2, regulatory subunit B', gamma b isoform X1 [KO:K11584 ]
135738470 cpsf2; cleavage and polyadenylation specificity factor subunit 2 [KO:K14402 ]
135738768 cpsf3; cleavage and polyadenylation specificity factor subunit 3 [KO:K14403 ] [EC:3.1.27.-]
135738978 ppp2r5ea; protein phosphatase 2, regulatory subunit B', epsilon [KO:K11584 ]
135740933 ncbp2; nuclear cap-binding protein subunit 2 isoform X1 [KO:K12883 ]
135741445 msi1b; RNA-binding protein Musashi homolog 1b isoform X1 [KO:K14411 ]
135742272 smg6; telomerase-binding protein EST1A isoform X1 [KO:K11124 ] [EC:3.1.-.-]
135743116 msi2a; RNA-binding protein Musashi homolog 2a isoform X1 [KO:K14411 ]
135744408 ppp2r2d; serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B delta isoform [KO:K04354 ]
135745608 ppp2r2ba; serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B beta isoform isoform X1 [KO:K04354 ]
135746120 cpsf4; cleavage and polyadenylation specificity factor subunit 4 [KO:K14404 ]
135748363 ppp2r2cb; serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B gamma isoform [KO:K04354 ]
135749080 srrm1; serine/arginine repetitive matrix protein 1 isoform X1 [KO:K13171 ]
135750098 ppp2r5a; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit alpha isoform [KO:K11584 ]
135758699 cstf2; cleavage stimulation factor subunit 2 isoform X1 [KO:K14407 ]
135758762 cpsf6; cleavage and polyadenylation specificity factor subunit 6 isoform X1 [KO:K14398 ]
135761044 ppp2r5ca; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit gamma isoform isoform X1 [KO:K11584 ]
135761378 etf1a; eukaryotic peptide chain release factor subunit 1-like [KO:K03265 ]
135766027 wdr33; pre-mRNA 3' end processing protein WDR33 isoform X1 [KO:K15542 ]
135766850 ppp2r3a; serine/threonine-protein phosphatase 2A regulatory subunit B'' subunit alpha isoform X1 [KO:K11583 ]
135767046 smg7; nonsense-mediated mRNA decay factor SMG7 isoform X1 [KO:K14409 ]
135770947 msi2b; RNA-binding protein Musashi homolog 2b isoform X1 [KO:K14411 ]
135771137 ppp2r1bb; serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A beta isoform [KO:K03456 ]
135771518 taf15; TATA-binding protein-associated factor 2N isoform X1 [KO:K13098 ]
135773205 nudt21; cleavage and polyadenylation specificity factor subunit 5 [KO:K14397 ]
135774207 ppp2r1ba; protein phosphatase 2, regulatory subunit A, beta a [KO:K03456 ]
135776484 ppp2r2bb; protein phosphatase 2, regulatory subunit B, beta b isoform X1 [KO:K04354 ]
135776732 ppp2cab; serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform [KO:K04382 ] [EC:3.1.3.16 ]
135779679 ppp2r2ab; serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B alpha isoform isoform X2 [KO:K04354 ]
135779714 etf1b; eukaryotic peptide chain release factor subunit 1b isoform X1 [KO:K03265 ]
135782781 cpsf1; cleavage and polyadenylation specificity factor subunit 1 [KO:K14401 ]
135786751 ppp2r5eb; protein phosphatase 2, regulatory subunit B', epsilon 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