The protein encoded by this gene is a member of the serine/threonine protein kinase family. This kinase has been shown to specifically activate MAPK8/JNK. The activation of MAPK8 by this kinase is found to be inhibited by the dominant-negative mutants of MAP3K7/TAK1, MAP2K4/MKK4, and MAP2K7/MKK7, which suggests that this kinase may function through the MAP3K7-MAP2K4-MAP2K7 kinase cascade, and mediate the TNF-alpha signaling pathway. Alternatively spliced transcript variants encoding different isoforms have been identified.
MAP4K4; mitogen-activated protein kinase kinase kinase kinase 4; FLH21957; hepatocyte progenitor kinase like/germinal center kinase like kinase; HGK; HPK/GCK like kinase; NIK; MEK kinase kinase 4; nck-interacting kinase; HPK/GCK-like kinase HGK; Ste20 group protein kinase HGK; MAPK/ERK kinase kinase kinase 4; hepatocyte progenitor kinase-like/germinal center kinase-like kinase; MEKKK4; FLJ10410; FLJ20373; FLJ90111; KIAA0687