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MAPK signaling pathway

Related

  • MAPK-ERK pathway poster
    • All interactive pathways


      Download the MAPK signaling pathway poster here. 

      Mitogen‑activated protein kinase (MAPK) cascades are key signaling pathways that regulate a wide variety of cellular processes such as proliferation, differentiation, apoptosis, and stress responses under both normal and pathological conditions1.  

      The MAPKs are evolutionarily conserved, ubiquitous serine-threonine kinases that are part of a core pathway featuring MAPK-kinase-kinase (MAPKKK), MAPK-Kinase (MAPKK), and MAPK. Upon activation by mitogens, growth factors, and other stimuli, MAPKKK, which is nearest to the signal source, phosphorylates MAPKK. The activated MAPKK subsequently phosphorylates MAPK, the third layer of the cascade2. ​​In mammalian cells, three MAPK families have been clearly characterized: classical MAPK (also known as extracellular signal-regulated kinase (ERK)), c-Jun N-terminal kinase/ stress-activated protein kinase (JNK/SAPK), and p38 kinase3.

      In many cancers, these pathway members are often either deregulated or mutated. 

      What to expect

      This pathway poster explores the ERK cascade, consisting of RAF at the MAPKKK layer, MEK1/2 at the MAPKK layer, and ERK1/2 at the MAPK layer. The other three Eukaryotic MAPK cascades consist of JNK, p38MAPK, and ERK5 pathways.

      References:

      1. Guo, Y.J., et al. ERK/MAPK signalling pathway and tumorigenesis Experimental and Therapeutic Medicine. 19(3), 1997-2007 (2020)

      2. Munshi, A. & Ramesh, R. Mitogen-Activated Protein Kinases and Their Role in Radiation Response. 4(9-10), 401-408 (2013)

      3.  Zhang, W. & Liu, H.T. MAPK signal pathways in the regulation of cell proliferation in mammalian cells. 12, 9-18 (2002)

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