Flow cytometric analysis of HEK 293T cells with MAP2K4 (phospho S257) monoclonal antibody, clone C5 (PE) (Cat # MAB23473). Unstained and untreated cells as negative control (blue) or treated with lambda phosphatase (red) or treated with UV (100 mJ/cm^2)+TPA (200nM, 1 hr recovery ; green).
This gene encodes a dual specificity protein kinase that belongs to the Ser/Thr protein kinase family. This kinase is a direct activator of MAP kinases in response to various environmental stresses or mitogenic stimuli. It has been shown to activate MAPK8/JNK1, MAPK9/JNK2, and MAPK14/p38, but not MAPK1/ERK2 or MAPK3/ERK3. This kinase is phosphorylated, and thus activated by MAP3K1/MEKK. The knockout studies in mice suggested the roles of this kinase in mediating survival signal in T cell development, as well as in the organogenesis of liver. [provided by RefSeq