Conventional Mitogen-activated protein kinases (MAPK) are proline-directed protein serine/threonine kinases that are components of the MAPK signaling cascade. MAPKs are activated by dual phosphorylation on Thr and Tyr residues within a conserved Thr-X-Tyr motif located in the activation loop by MAPK kinases. (Adapted from PMID:21372320).
Notes on Group
p38c was thought to be a pseudokinase due to divergence in kinase motifs (FBrf0182691), but has shown to have kinase activity experimentally by FBrf0226357.