Entry
Name
mRNA surveillance pathway - Homo sapiens (human)
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
Drug
Other DBs
Organism
Homo sapiens (human) [GN:
hsa ]
Gene
4686 NCBP1; nuclear cap binding protein subunit 1 [KO:K12882 ]
22916 NCBP2; nuclear cap binding protein subunit 2 [KO:K12883 ]
392517 NCBP2L; nuclear cap binding protein subunit 2 like [KO:K12883 ]
65109 UPF3B; UPF3B regulator of nonsense mediated mRNA decay [KO:K14328 ]
65110 UPF3A; UPF3A regulator of nonsense mediated mRNA decay [KO:K14328 ]
9939 RBM8A; RNA binding motif protein 8A [KO:K12876 ]
4116 MAGOH; mago homolog, exon junction complex subunit [KO:K12877 ]
55110 MAGOHB; mago homolog B, exon junction complex subunit [KO:K12877 ]
22794 CASC3; CASC3 exon junction complex subunit [KO:K14323 ]
5411 PNN; pinin, desmosome associated protein [KO:K13114 ]
22985 ACIN1; apoptotic chromatin condensation inducer 1 [KO:K12875 ]
10921 RNPS1; RNA binding protein with serine rich domain 1 [KO:K14325 ]
29107 NXT1; nuclear transport factor 2 like export factor 1 [KO:K14285 ]
55916 NXT2; nuclear transport factor 2 like export factor 2 [KO:K14285 ]
84305 PYM1; PYM homolog 1, exon junction complex associated factor [KO:K14294 ]
10250 SRRM1; serine and arginine repetitive matrix 1 [KO:K13171 ]
8106 PABPN1; poly(A) binding protein nuclear 1 [KO:K14396 ]
11052 CPSF6; cleavage and polyadenylation specific factor 6 [KO:K14398 ]
79869 CPSF7; cleavage and polyadenylation specific factor 7 [KO:K14398 ]
51585 PCF11; PCF11 cleavage and polyadenylation factor subunit [KO:K14400 ]
29894 CPSF1; cleavage and polyadenylation specific factor 1 [KO:K14401 ]
53981 CPSF2; cleavage and polyadenylation specific factor 2 [KO:K14402 ]
51692 CPSF3; cleavage and polyadenylation specific factor 3 [KO:K14403 ] [EC:3.1.27.-]
10898 CPSF4; cleavage and polyadenylation specific factor 4 [KO:K14404 ]
642843 CPSF4L; cleavage and polyadenylation specific factor 4 like [KO:K14404 ]
81608 FIP1L1; factor interacting with PAPOLA and CPSF1 [KO:K14405 ]
1477 CSTF1; cleavage stimulation factor subunit 1 [KO:K14406 ]
1478 CSTF2; cleavage stimulation factor subunit 2 [KO:K14407 ]
23283 CSTF2T; cleavage stimulation factor subunit 2 tau variant [KO:K14407 ]
1479 CSTF3; cleavage stimulation factor subunit 3 [KO:K14408 ]
8189 SYMPK; symplekin scaffold protein [KO:K06100 ]
4440 MSI1; musashi RNA binding protein 1 [KO:K14411 ]
26986 PABPC1; poly(A) binding protein cytoplasmic 1 [KO:K13126 ]
140886 PABPC5; poly(A) binding protein cytoplasmic 5 [KO:K13126 ]
5042 PABPC3; poly(A) binding protein cytoplasmic 3 [KO:K13126 ]
645974 PABPC1L2B; poly(A) binding protein cytoplasmic 1 like 2B [KO:K13126 ]
80336 PABPC1L; poly(A) binding protein cytoplasmic 1 like [KO:K13126 ]
340529 PABPC1L2A; poly(A) binding protein cytoplasmic 1 like 2A [KO:K13126 ]
8761 PABPC4; poly(A) binding protein cytoplasmic 4 [KO:K13126 ]
132430 PABPC4L; poly(A) binding protein cytoplasmic 4 like [KO:K13126 ]
2107 ETF1; eukaryotic translation termination factor 1 [KO:K03265 ]
2935 GSPT1; G1 to S phase transition 1 [KO:K03267 ]
26019 UPF2; UPF2 regulator of nonsense mediated mRNA decay [KO:K14327 ]
23049 SMG1; SMG1 nonsense mediated mRNA decay associated PI3K related kinase [KO:K08873 ] [EC:2.7.11.1 ]
9887 SMG7; SMG7 nonsense mediated mRNA decay factor [KO:K14409 ]
23381 SMG5; SMG5 nonsense mediated mRNA decay factor [KO:K11125 ]
23293 SMG6; SMG6 nonsense mediated mRNA decay factor [KO:K11124 ] [EC:3.1.-.-]
5519 PPP2R1B; protein phosphatase 2 scaffold subunit Abeta [KO:K03456 ]
5518 PPP2R1A; protein phosphatase 2 scaffold subunit Aalpha [KO:K03456 ]
5520 PPP2R2A; protein phosphatase 2 regulatory subunit Balpha [KO:K04354 ]
5521 PPP2R2B; protein phosphatase 2 regulatory subunit Bbeta [KO:K04354 ]
5522 PPP2R2C; protein phosphatase 2 regulatory subunit Bgamma [KO:K04354 ]
55844 PPP2R2D; protein phosphatase 2 regulatory subunit Bdelta [KO:K04354 ]
28227 PPP2R3B; protein phosphatase 2 regulatory subunit B''beta [KO:K11583 ]
55012 PPP2R3C; protein phosphatase 2 regulatory subunit B''gamma [KO:K11583 ]
5523 PPP2R3A; protein phosphatase 2 regulatory subunit B''alpha [KO:K11583 ]
5526 PPP2R5B; protein phosphatase 2 regulatory subunit B'beta [KO:K11584 ]
5527 PPP2R5C; protein phosphatase 2 regulatory subunit B'gamma [KO:K11584 ]
5528 PPP2R5D; protein phosphatase 2 regulatory subunit B'delta [KO:K11584 ]
5529 PPP2R5E; protein phosphatase 2 regulatory subunit B'epsilon [KO:K11584 ]
5525 PPP2R5A; protein phosphatase 2 regulatory subunit B'alpha [KO:K11584 ]
10767 HBS1L; HBS1 like translational GTPase [KO:K14416 ]
53918 PELO; pelota mRNA surveillance and ribosome rescue factor [KO:K06965 ]
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