PPP1R15A

PPP1R15A
Available structures PDB Ortholog search: PDBe RCSB List of PDB id codes 4XPN
Identifiers
Aliases	PPP1R15A, GADD34, protein phosphatase 1 regulatory subunit 15A
External IDs	OMIM: 611048 MGI: 1927072 HomoloGene: 8639 GeneCards: PPP1R15A
Gene location (Human) Chr. Chromosome 19 (human) Band 19q13.33 Start 48,872,421 bp End 48,876,058 bp
Gene location (Mouse) Chr. Chromosome 7 (mouse) Band 7|7 B3 Start 45,172,340 bp End 45,175,692 bp
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in gastric mucosa monocyte vena cava sural nerve upper lobe of left lung skin of abdomen gallbladder ascending aorta left uterine tube saphenous vein Top expressed in islet of Langerhans saccule spleen lip secondary oocyte dermis esophagus body of femur triceps brachii muscle blood More reference expression data BioGPS More reference expression data
Gene ontology Molecular function protein binding protein kinase binding protein phosphatase 1 binding protein phosphatase activator activity protein phosphatase regulator activity Cellular component Golgi apparatus endoplasmic reticulum membrane membrane mitochondrial outer membrane protein phosphatase type 1 complex endoplasmic reticulum mitochondrion cytosol cytoplasm Biological process negative regulation of protein dephosphorylation cellular response to DNA damage stimulus positive regulation of endoplasmic reticulum stress-induced eIF2 alpha dephosphorylation positive regulation of translational initiation in response to stress positive regulation of phosphoprotein phosphatase activity intrinsic apoptotic signaling pathway in response to endoplasmic reticulum stress negative regulation of phosphoprotein phosphatase activity protein localization to endoplasmic reticulum regulation of translational initiation by eIF2 alpha dephosphorylation negative regulation of PERK-mediated unfolded protein response regulation of translation apoptotic process response to endoplasmic reticulum stress positive regulation of peptidyl-serine dephosphorylation Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 23645 17872 Ensembl ENSG00000087074 ENSMUSG00000040435 UniProt O75807 P17564 RefSeq (mRNA) NM_014330 NM_008654 RefSeq (protein) NP_055145 NP_032680 Location (UCSC) Chr 19: 48.87 – 48.88 Mb Chr 7: 45.17 – 45.18 Mb PubMed search
Wikidata
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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. Bibcode:2001PNAS...9810172G. 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. Bibcode:2002PNAS...9916899M. 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. S2CID 27555253.
• Powolny A, Takahashi K, Hopkins RG, Loo G (2004). "Induction of GADD gene expression by phenethylisothiocyanate in human colon adenocarcinoma cells" (PDF). J. Cell. Biochem. 90 (6): 1128–39. doi:10.1002/jcb.10733. PMID 14635187. S2CID 33081723.
• 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.