p38 is a member of the MAP kinase family. MAP kinases act as an integration point for multiple biochemical signals, and are involved in a wide variety of cellular processes such as proliferation, differentiation, transcription regulation and development. This kinase is activated by various environmental stresses and proinflammatory cytokines. The activation requires its phosphorylation by MAP kinase kinases, or its autophosphorylation triggered by the interaction of MAP3K7IP1/TAB1 protein with this kinase. The substrates of this kinase include transcription regulator ATF2, MEF2C, and MAX, cell cycle regulator CDC25B, and tumor suppressor p53, which suggest the roles of this kinase in stress related transcription and cell cycle regulation, as well as in genotoxic stress response. Four alternatively spliced transcript variants of this gene encoding distinct isoforms have been reported.
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Protein Aliases: MAP kinase 13; MAP kinase p38 delta; Mitogen-activated protein kinase 13; Mitogen-activated protein kinase p38 delta; Stress-activated protein kinase 4
Gene Aliases: MAPK 13; MAPK-13; MAPK13; p38delta; PRKM13; SAPK4
UniProt ID: (Human) O15264
Entrez Gene ID: (Human) 5603
Molecular Function: non-receptor serine/threonine protein kinase