Definitions for "MAP kinase"
Protein kinase that is activated in response to cell stimulation by many different growth factors and that mediates cellular responses by phosphorylating specific target proteins.
Mitogen-activated protein kinase. An intracellular serine/threonine protein kinase that is part of a signalling pathway which is activated by the action of extracellular signals at a variety of receptors. it is involved in stimulating cell proliferation and gene expression. Also known as extracellular signal-regulated kinase (ERK).
A protein kinase that performs a crucial step in relaying signals from the plasma membrane to the nucleus. Turned on by a wide range of proliferation- or differentiation-inducing signals.