Mitogen-activated protein kinase kinase kinase kinase (MAP4K) is a family of proteins involved in cellular signal transduction. This list is incomplete; you can help by adding missing items. (May 2011) MAP4K1 (aka HPK1) MAP4K2 (aka GCK) MAP4K3 (aka GLK) MAP4K4 (aka HGK) MAP4K5 (aka KHS) MAP4K6 (aka MINK) Some signal transduction pathways. MAP4K is not labelled. MAPK pathway. Some (or all) of the MAP4Ks in this image are labelled by other names, such as HPK1 and GCK. Signal transduction MAP kinase MAP kinase kinase MAP kinase kinase kinase List of unusual biological names This biochemistry article is a stub. You can help Wikipedia by expanding it.vte