Growth Arrest and DNA Damage-Inducible Protein GADD45 Alpha (GADD45) Antibody – Rabbit Polyclonal

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 protein encoded by this gene responds to environmental stresses by mediating activation of the p38/JNK pathway via MTK1/MEKK4 kinase. The DNA damage-induced transcription of this gene is mediated by both p53-dependent and -independent mechanisms. Alternatively spliced transcript variants encoding distinct isoforms have been found for this gene.[provided by RefSeq, Dec 2010]

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.

Protein type: Cell cycle regulation; Apoptosis; DNA repair, damage; Nuclear receptor co-regulator

Chromosomal Location of Human Ortholog: 1p31.2

Cellular Component: cytoplasm; nucleoplasm; nucleus

Molecular Function: protein binding

Biological Process: activation of MAPKKK activity; apoptosis; cell cycle arrest; centrosome cycle; DNA damage response, signal transduction; DNA repair; G2/M transition of mitotic cell cycle; negative regulation of protein kinase activity; positive regulation of apoptosis; positive regulation of JNK cascade; regulation of cyclin-dependent protein kinase activity