Synonyms : ERK1 Kinase, MAPK3 Mitogen-Activated Protein Kinase, Meiosis-Activated Myelin Basic Protein Kinase p44(mpk), Microtubule-Associated Protein-2 Kinase, PSTkinase p44mpk, Protein-Serine-Threonine Kinase p44(mpk), p44 MAPK, Extracellular Signal Regulated Kinase 1