Entry
Name
mRNA surveillance pathway - Dipodomys spectabilis (banner-tailed kangaroo rat)
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
Dipodomys spectabilis (banner-tailed kangaroo rat) [GN:
dsp ]
Gene
122095370 Gspt2; eukaryotic peptide chain release factor GTP-binding subunit ERF3B isoform X1 [KO:K03267 ]
122098491 Ppp1cc; serine/threonine-protein phosphatase PP1-gamma catalytic subunit isoform X1 [KO:K06269 ] [EC:3.1.3.16 ]
122098853 Cpsf1; cleavage and polyadenylation specificity factor subunit 1 isoform X1 [KO:K14401 ]
122099750 Ppp2r2c; protein phosphatase 2, regulatory subunit B, gamma [KO:K04354 ]
122099862 Ppp2r3a; serine/threonine-protein phosphatase 2A regulatory subunit B'' subunit alpha [KO:K11583 ]
122100318 Msi2; RNA-binding protein Musashi homolog 2 isoform X1 [KO:K14411 ]
122101491 Ppp2r5d; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit delta isoform isoform X1 [KO:K11584 ]
122101842 Ppp2r2d; serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B delta isoform isoform X1 [KO:K04354 ]
122101901 Smg6; telomerase-binding protein EST1A isoform X1 [KO:K11124 ] [EC:3.1.-.-]
122102886 Ppp2r3b; serine/threonine-protein phosphatase 2A regulatory subunit B'' subunit beta [KO:K11583 ]
122104663 Ppp2r5b; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit beta isoform [KO:K11584 ]
122104665 Cpsf7; cleavage and polyadenylation specificity factor subunit 7 isoform X1 [KO:K14398 ]
122106534 Ppp2r3c; serine/threonine-protein phosphatase 2A regulatory subunit B'' subunit gamma [KO:K11583 ]
122106875 Fip1l1; pre-mRNA 3'-end-processing factor FIP1 isoform X1 [KO:K14405 ]
122108770 Cpsf3; cleavage and polyadenylation specificity factor subunit 3 isoform X1 [KO:K14403 ] [EC:3.1.27.-]
122109414 Ppp2r5a; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit alpha isoform [KO:K11584 ]
122110009 Ppp2r5e; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit epsilon isoform isoform X1 [KO:K11584 ]
122110283 Ppp2r1b; serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A beta isoform [KO:K03456 ]
122110440 Cstf2; cleavage stimulation factor subunit 2 isoform X1 [KO:K14407 ]
122112325 Wdr33; pre-mRNA 3' end processing protein WDR33 isoform X1 [KO:K15542 ]
122113476 Acin1; apoptotic chromatin condensation inducer in the nucleus isoform X1 [KO:K12875 ]
122113736 Cpsf4; cleavage and polyadenylation specificity factor subunit 4 isoform X1 [KO:K14404 ]
122114755 Pcf11; pre-mRNA cleavage complex 2 protein Pcf11 isoform X1 [KO:K14400 ]
122115179 Srrm1; serine/arginine repetitive matrix protein 1 isoform X1 [KO:K13171 ]
122115382 Ppp2ca; serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform [KO:K04382 ] [EC:3.1.3.16 ]
122115722 Cstf2t; cleavage stimulation factor subunit 2 tau variant [KO:K14407 ]
122116290 Nudt21; cleavage and polyadenylation specificity factor subunit 5 [KO:K14397 ]
122118069 Etf1; eukaryotic peptide chain release factor subunit 1 [KO:K03265 ]
122118146 Ppp2r2b; serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B beta isoform [KO:K04354 ]
122118713 Cpsf2; cleavage and polyadenylation specificity factor subunit 2 [KO:K14402 ]
122120311 Pabpc1l; polyadenylate-binding protein 1-like isoform X1 [KO:K13126 ]
122122586 Ppp2r5c; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit gamma isoform isoform X1 [KO:K11584 ]
122123494 Ppp2r2a; serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B alpha isoform [KO:K04354 ]
122123815 Rnps1; RNA-binding protein with serine-rich domain 1 isoform X1 [KO:K14325 ]
122123914 Gspt1; eukaryotic peptide chain release factor GTP-binding subunit ERF3A isoform X1 [KO:K03267 ]
122124397 Cpsf6; cleavage and polyadenylation specificity factor subunit 6 isoform X1 [KO:K14398 ]
122124574 Cstf1; cleavage stimulation factor subunit 1 isoform X1 [KO:K14406 ]
122128213 Upf3b; regulator of nonsense transcripts 3B isoform X1 [KO:K14328 ]
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