Claim: MAP2K4, an enzyme in humans, encodes a dual-specificity kinase in the SER/Thr protein kinase family and phosphorylates MAP kinases in response to various environmental stresses on mitogenic stimuli.
Evidence: Dual-specificity mitogen-activated protein kinase kinase 4 is an enzyme that in humans is encoded by the MAP2K4 gene. MAP2K4 encodes a dual-specificity kinase that belongs to the Ser/Thr protein kinase family. MAP2K4 phosphorylates MAP kinases in response to various environmental stresses or mitogenic stimuli.