PPP1R15A

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Identifiers
Aliases
External IDs	GeneCards: [1]
Orthologs
Species	Human	Mouse
Entrez	n/a	n/a
Ensembl	n/a	n/a
UniProt	n/a	n/a
RefSeq (mRNA)	n/a	n/a
RefSeq (protein)	n/a	n/a
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Wikidata
View/Edit Human

Protein phosphatase 1 regulatory subunit 15A also known as growth arrest and DNA damage-inducible protein GADD34 is a protein that in humans is encoded by the PPP1R15A gene.

The Gadd34/MyD116 gene was originally discovered as a member in a set of gadd and MyD mammalian genes encoding acidic proteins that synergistically suppress cell growth. Later on it has been characterized as a gene playing a role in ER stress-induced cell death, being a target of ATF4 that plays a role in ER-mediated cell death via promoting protein dephosphorylation of eIF2α and reversing translational inhibition.

Function

This gene is a member of a group of genes whose transcript levels are increased following stressful growth arrest conditions and treatment with DNA-damaging agents. The induction of this gene by ionizing radiation occurs in certain cell lines regardless of p53 status, and its protein response is correlated with apoptosis following ionizing radiation.

Interactions

PPP1R15A has been shown to interact with:

• BAG1
• LYN,
• MLL,
• PPP1CA,
• PPP1CB,
• PPP1CC,
• SMARCB1, and
• TSN.

Further reading

• Maruyama K, Sugano S (1994). "Oligo-capping: a simple method to replace the cap structure of eukaryotic mRNAs with oligoribonucleotides". Gene. 138 (1–2): 171–4. doi:10.1016/0378-1119(94)90802-8. PMID 8125298.
• Suzuki Y, Yoshitomo-Nakagawa K, Maruyama K, et al. (1997). "Construction and characterization of a full length-enriched and a 5'-end-enriched cDNA library". Gene. 200 (1–2): 149–56. doi:10.1016/S0378-1119(97)00411-3. PMID 9373149.
• Hasegawa T, Isobe K (1999). "Evidence for the interaction between Translin and GADD34 in mammalian cells". Biochim. Biophys. Acta. 1428 (2–3): 161–8. doi:10.1016/s0304-4165(99)00060-4. PMID 10434033.
• Adler HT, Chinery R, Wu DY, et al. (2000). "Leukemic HRX fusion proteins inhibit GADD34-induced apoptosis and associate with the GADD34 and hSNF5/INI1 proteins". Mol. Cell. Biol. 19 (10): 7050–60. doi:10.1128/mcb.19.10.7050. PMC 84700. PMID 10490642.
• Hasegawa T, Yagi A, Isobe K (2000). "Interaction between GADD34 and kinesin superfamily, KIF3A". Biochem. Biophys. Res. Commun. 267 (2): 593–6. doi:10.1006/bbrc.1999.1991. PMID 10631107.
• Hasegawa T, Xiao H, Hamajima F, Isobe K (2001). "Interaction between DNA-damage protein GADD34 and a new member of the Hsp40 family of heat shock proteins that is induced by a DNA-damaging reagent". Biochem. J. 352 (3): 795–800. doi:10.1042/0264-6021:3520795. PMC 1221519. PMID 11104688.
• Grishin AV, Azhipa O, Semenov I, Corey SJ (2001). "Interaction between growth arrest-DNA damage protein 34 and Src kinase Lyn negatively regulates genotoxic apoptosis". Proc. Natl. Acad. Sci. U.S.A. 98 (18): 10172–7. doi:10.1073/pnas.191130798. PMC 56934. PMID 11517336.
• Connor JH, Weiser DC, Li S, et al. (2001). "Growth arrest and DNA damage-inducible protein GADD34 assembles a novel signaling complex containing protein phosphatase 1 and inhibitor 1". Mol. Cell. Biol. 21 (20): 6841–50. doi:10.1128/MCB.21.20.6841-6850.2001. PMC 99861. PMID 11564868.
• Wu DY, Tkachuck DC, Roberson RS, Schubach WH (2002). "The human SNF5/INI1 protein facilitates the function of the growth arrest and DNA damage-inducible protein (GADD34) and modulates GADD34-bound protein phosphatase-1 activity". J. Biol. Chem. 277 (31): 27706–15. doi:10.1074/jbc.M200955200. PMID 12016208.
• Korabiowska M, Cordon-Cardo C, Betke H, et al. (2003). "GADD153 is an independent prognostic factor in melanoma: immunohistochemical and molecular genetic analysis". Histol. Histopathol. 17 (3): 805–11. PMID 12168790.
• Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
• Brush MH, Weiser DC, Shenolikar S (2003). "Growth arrest and DNA damage-inducible protein GADD34 targets protein phosphatase 1 alpha to the endoplasmic reticulum and promotes dephosphorylation of the alpha subunit of eukaryotic translation initiation factor 2". Mol. Cell. Biol. 23 (4): 1292–303. doi:10.1128/MCB.23.4.1292-1303.2003. PMC 141149. PMID 12556489.
• Hung WJ, Roberson RS, Taft J, Wu DY (2003). "Human BAG-1 proteins bind to the cellular stress response protein GADD34 and interfere with GADD34 functions". Mol. Cell. Biol. 23 (10): 3477–86. doi:10.1128/MCB.23.10.3477-3486.2003. PMC 164759. PMID 12724406.
• Hollander MC, Poola-Kella S, Fornace AJ (2003). "Gadd34 functional domains involved in growth suppression and apoptosis". Oncogene. 22 (25): 3827–32. doi:10.1038/sj.onc.1206567. PMID 12813455.
• Powolny A, Takahashi K, Hopkins RG, Loo G (2004). "Induction of GADD gene expression by phenethylisothiocyanate in human colon adenocarcinoma cells". J. Cell. Biochem. 90 (6): 1128–39. doi:10.1002/jcb.10733. PMID 14635187.
• Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID 14702039.
• Shi W, Sun C, He B, et al. (2004). "GADD34-PP1c recruited by Smad7 dephosphorylates TGFbeta type I receptor". J. Cell Biol. 164 (2): 291–300. doi:10.1083/jcb.200307151. PMC 2172339. PMID 14718519.
• Colland F, Jacq X, Trouplin V, et al. (2004). "Functional proteomics mapping of a human signaling pathway". Genome Res. 14 (7): 1324–32. doi:10.1101/gr.2334104. PMC 442148. PMID 15231748.