Mitogen-activated protein kinase kinase (also known as MAP2K, MEK, MAPKK) is a kinase enzyme which phosphorylates mitogen-activated protein kinase (MAPK).
MAP2K is classified as EC 22.214.171.124.
There are seven genes:
The activators of p38 (MKK3 and MKK6), JNK (MKK4 and MKK7), and ERK (MEK1 and MEK2) define independent MAP kinase signal transduction pathways. The acronym MEK derives from Mitogen/Extracellular signal-regulated Kinase.
Role in Melanoma
MEK is a member of the MAPK signaling cascade that is activated in melanoma. When MEK is inhibited, cell proliferation is blocked and apoptosis (controlled cell death) is induced.
- ↑ Dérijard B et al. (1995). "Independent human MAP-kinase signal transduction pathways defined by MEK and MKK isoforms". Science 267 (5198): 682–5. PMID 7839144. doi:10.1126/science.7839144.
- ↑ Falchook, Gerald S, Karl D Lewis, Jeffrey R Infante, Michael S Gordon, Nicholas J Vogelzang, Douglas J DeMarini, and Leslie A Fecher, et al. 2012. "Activity of the oral MEK inhibitor trametinib in patients with advanced melanoma: a phase 1 dose-escalation trial." The Lancet Oncology 13, no. 8: 782-789.
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