NCIt definition : Dual specificity mitogen-activated protein kinase kinase 1 (393 aa, 43 kDa) is encoded
by the human MAP2K1 gene. This protein plays a role in protein phosphorylation and
the MAP kinase signal transduction pathway.;
NCIt note : A component of the RAS intracellular signaling pathway, MAP2K1 is a critical activating
protein kinase of MAP kinase. p53 activates NFKB through a RAF/MAP2K1/p90(RSK) pathway.
(Yu et al. Curr Biol 1998. 8:56-64 and OMIMI);