Mitogen-activated protein kinase (MAPK) signaling cascades include MAPK or extracellular signal-regulated kinase (ERK), MAPK kinase (MKK or MEK), and MAPK kinase kinase (MAPKKK or MEKK). MAPKK kinase/MEKK phosphorylates and activates its downstream protein kinase, MAPK kinase/MEK, which in turn activates MAPK. The kinases of these signaling cascades are highly conserved, and homologs exist in yeast, Drosophila, and mammalian cells. MEKK6 activates the JNK, but not ERK or p38 kinase pathways.
Apoptosis signal-regulating kinase 2; MAP3K6; mitogen activated protein kinase kinase kinase 6; Mitogen-activated protein kinase kinase kinase 6