Mitogen-Activated Protein Kinase 3

**Definition:** A 44-kDa extracellular signal-regulated MAP kinase that may play a role the initiation and regulation of MEIOSIS; MITOSIS; and postmitotic functions in differentiated cells. It phosphorylates a number of TRANSCRIPTION FACTORS; and MICROTUBULE-ASSOCIATED PROTEINS.

**Tree numbers:** - D08.811.913.696.620.682.700.567.249.750 - D12.776.476.563.567.249.750

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