MEK-7 (phospho-S271) polyclonal antibody

MKK7 is a MAP kinase kinase that serves as a specific activator of the SAPK/JNK pathway. MKK7 is strongly activated by TNF-α, as well as other environmental stresses, whereas SEK1/MKK4, which activates both p38 and SAPK/JNK pathways, is not activated by TNF-α. Sequence alignment of the activation loop of the MAP kinase kinase family members indicates that Ser271 and Thr275 are potential phosphorylation sites that are crucial for the kinase acivity.