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GADD45A In T-cells, functions as a regulator of p38 MAPKs by inhibiting p88 phosphorylation and activity. Might affect PCNA interaction with some CDK (cell division protein kinase) complexes; stimulates DNA excision repair in vitro and inhibits entry of cells into S phase. Interacts with MAPK14. Interacts with GADD45GIP1. Interacts with PCNA. By UV irradiation, X-rays, growth arrest and alkylating agents. The induction is mediate by some kinase(s) other than PKC. Belongs to the GADD45 family. 2 isoforms of the human protein are produced by alternative splicing. Note: This description may include information from UniProtKB.
Protein type: Apoptosis; Cell cycle regulation; DNA repair, damage; Nuclear receptor co-regulator
Chromosomal Location of Human Ortholog: 1p31.3
Cellular Component: cytoplasm; nuclear speck; nucleoplasm; nucleus
Molecular Function: kinase binding; protein binding; protein heterodimerization activity; protein homodimerization activity; protein N-terminus binding
Biological Process: activation of MAPKKK activity; apoptosis; cell cycle arrest; DNA damage response, signal transduction; DNA damage response, signal transduction by p53 class mediator resulting in cell cycle arrest; DNA repair; positive regulation of apoptosis; positive regulation of JNK cascade; regulation of cyclin-dependent protein kinase activity
Reference #:  P24522 (UniProtKB)
Alt. Names/Synonyms: DDIT-1; DDIT1; DNA damage-inducible transcript 1 protein; DNA damage-inducible transcript-1; DNA-damage-inducible transcript 1; GA45A; GADD45; GADD45A; Growth arrest and DNA damage-inducible protein GADD45 alpha; growth arrest and DNA-damage-inducible 45 alpha; growth arrest and DNA-damage-inducible, alpha
Gene Symbols: GADD45A
Molecular weight: 18,336 Da
Basal Isoelectric point: 4.36  Predict pI for various phosphorylation states
CST Pathways:  G2/M DNA Damage Checkpoint  |  T Cell Receptor Signaling
Protein-Specific Antibodies or siRNAs from Cell Signaling Technology® Total Proteins
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