JNK3 is a member of the MAP kinase family. MAP kinases act as an integration point for multiple biochemical signals, and are involved in a wide variety of cellular processes such as proliferation, differentiation, transcription regulation and development. This protein is a neuronal-specific form of c-Jun N-terminal kinases (JNKs). Through its phosphorylation and nuclear localization, this kinase plays regulatory roles in the signaling pathways during neuronal apoptosis. Beta-arrestin 2, a receptor-regulated MAP kinase scaffold protein, is found to interact with, and stimulate the phosphorylation of this kinase by MAP kinase kinase 4 (MKK4). Cyclin-dependent kinase 5 can phosphorylate and inhibit the activity of this kinase, which may be important in preventing neuronal apoptosis.
c-Jun N-terminal kinase 3; JNK3 alpha protein kinase; JNK3 beta1 protein kinase; JNK3 beta2 protein kinase; MAP kinase 10; MAP kinase p49 3F12; MAPK 10; mitogen activated protein kinase 10; Mitogen-activated protein kinase 10; SAPK/Erk/kinase 2; SAPK1b; stress activated protein kinase beta; Stress-activated protein kinase 1b; Stress-activated protein kinase JNK3
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