Entry
Name
mRNA surveillance pathway - Dipodomys ordii (Ord's 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 ordii (Ord's kangaroo rat) [GN:
dord ]
Gene
105980840 Ppp2r1b; LOW QUALITY PROTEIN: serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A beta isoform [KO:K03456 ]
105981577 Pabpc1l; polyadenylate-binding protein 1-like isoform X1 [KO:K13126 ]
105981978 Gspt1; eukaryotic peptide chain release factor GTP-binding subunit ERF3A [KO:K03267 ]
105982176 Rnps1; RNA-binding protein with serine-rich domain 1 isoform X1 [KO:K14325 ]
105982594 Ppp2r3c; serine/threonine-protein phosphatase 2A regulatory subunit B'' subunit gamma [KO:K11583 ]
105983730 Cpsf3; cleavage and polyadenylation specificity factor subunit 3 [KO:K14403 ] [EC:3.1.27.-]
105984038 Pcf11; pre-mRNA cleavage complex 2 protein Pcf11 isoform X1 [KO:K14400 ]
105984698 Ppp2r5a; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit alpha isoform [KO:K11584 ]
105985177 Ppp2r5c; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit gamma isoform isoform X1 [KO:K11584 ]
105985502 Ppp2r5e; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit epsilon isoform [KO:K11584 ]
105985878 Cpsf2; cleavage and polyadenylation specificity factor subunit 2 [KO:K14402 ]
105986322 Cstf2t; cleavage stimulation factor subunit 2 tau variant [KO:K14407 ]
105987375 Cpsf6; cleavage and polyadenylation specificity factor subunit 6 [KO:K14398 ]
105987795 Ppp2r5d; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit delta isoform isoform X1 [KO:K11584 ]
105988276 Upf3b; regulator of nonsense transcripts 3B isoform X1 [KO:K14328 ]
105988710 Etf1; eukaryotic peptide chain release factor subunit 1 [KO:K03265 ]
105989093 Ppp2r5b; serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit beta isoform [KO:K11584 ]
105989775 Ppp2r2d; serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B delta isoform isoform X1 [KO:K04354 ]
105990823 Ncbp1; LOW QUALITY PROTEIN: nuclear cap-binding protein subunit 1 [KO:K12882 ]
105990849 Cpsf4; cleavage and polyadenylation specificity factor subunit 4 [KO:K14404 ]
105991307 Ppp2r2c; protein phosphatase 2, regulatory subunit B, gamma [KO:K04354 ]
105991686 Cstf1; cleavage stimulation factor subunit 1 isoform X1 [KO:K14406 ]
105992521 Acin1; apoptotic chromatin condensation inducer in the nucleus isoform X1 [KO:K12875 ]
105992581 Ppp2r2b; serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B beta isoform isoform X1 [KO:K04354 ]
105994316 Ppp2r1a; serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A alpha isoform [KO:K03456 ]
105994478 Nudt21; cleavage and polyadenylation specificity factor subunit 5 [KO:K14397 ]
105995160 Wdr33; pre-mRNA 3' end processing protein WDR33 isoform X1 [KO:K15542 ]
105995524 Cpsf7; cleavage and polyadenylation specificity factor subunit 7 isoform X1 [KO:K14398 ]
105996781 Ppp2ca; serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform [KO:K04382 ] [EC:3.1.3.16 ]
105998997 Cpsf1; cleavage and polyadenylation specificity factor subunit 1 [KO:K14401 ]
105999392 Ppp2r2a; serine/threonine-protein phosphatase 2A 55 kDa regulatory subunit B alpha isoform [KO:K04354 ]
105999592 Ppp2r3a; serine/threonine-protein phosphatase 2A regulatory subunit B'' subunit alpha [KO:K11583 ]
105999932 Cstf2; cleavage stimulation factor subunit 2 isoform X1 [KO:K14407 ]
106001209 Gspt2; eukaryotic peptide chain release factor GTP-binding subunit ERF3B isoform X1 [KO:K03267 ]
106003119 Msi2; RNA-binding protein Musashi homolog 2 isoform X1 [KO:K14411 ]
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