Mitogen-activated protein kinase kinase kinase 1 (MAP3K1)

Component of a protein kinase signal transduction cascade (PubMed:9808624). Activates the ERK and JNK kinase pathways by phosphorylation of MAP2K1 and MAP2K4 (PubMed:9808624).

May phosphorylate the MAPK8/JNK1 kinase (PubMed:17761173). Activates CHUK and IKBKB, the fundamental protein kinases of the NF- kappa-B pathway (PubMed:9808624).