p38 Proteins, Antibodies, cDNA Clones Research Reagents

MAPK14 (Mitogen-Activated Protein Kinase 14, also known as RK; p38; CSBP; EXIP; Mxi2; CSBP1; CSBP2; CSPB1; PRKM14; PRKM15; SAPK2A; p38ALPHA), located on 6p21.31, is conserved in chimpanzee, Rhesus monkey, dog, cow, mouse, rat, chicken, zebrafish, fruit fly, mosquito, C.elegans, S.cerevisiae, K.lactis, E.gossypii, S.pombe, M.oryzae, N.crassa, A.thaliana, rice, and frog. The gene produces a 41293 Da protein composed of 360 amino acids. The protein encoded by this gene is a member of the MAP kinase family. Diseases such as Chlamydia and Inflammatory Bowel Disease 15 are associated with MAPK14. The related pathways of MAPK14 include ATM Pathway and Monoamine Transport.

p38 Protein (2)

    p38 Antibody (4)

      p38 cDNA Clone (47)


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      p38 Lysate (1)

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        p38 Background

        MAPK14 contains 1 protein kinase domain and belongs to 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. MAPK14 can be detected in the brain, heart, placenta, pancreas, and skeletal muscle and it is expressed to a lesser extent in the lung, liver, and kidney. MAPK14 is activated by various environmental stresses and proinflammatory cytokines. The activation requires its phosphorylation by MAP kinase kinases (MKKs), or its autophosphorylation triggered by the interaction of MAP3K7IP1/TAB1 protein with MAPK14. The substrates of p38 alpha include transcription regulator ATF2, MEF2C, and MAX, cell cycle regulator CDC25B, and tumor suppressor p53, which suggest the roles of p38 alpha in stress-related transcription and cell cycle regulation, as well as in genotoxic stress response. In response to activation by environmental stress, pro-inflammatory cytokines, and lipopolysaccharide, MAPK14 phosphorylates some transcription factors, such as ELK1 and ATF2, and several downstream kinases, such as MAPKAPK2 and MAPKAPK5. MAPK14 plays a critical role in the production of some cytokines, for example, IL-6. It may play a role in the stabilization of EPO mRNA during hypoxic stress. Isoform Mxi2 activation is stimulated by mitogens and oxidative stress and only poorly phosphorylates ELK1 and ATF2.

        p38 References

        • Luo X, et al. (2011) Study on p38 mitogen activated protein kinase in vascular endothelial cells dysfunction in preeclampsia. Zhonghua Fu Chan Ke Za Zhi. 46(1):36-40.
        • Park CH, et al. (2011) Epidermal growth factor-induced matrix metalloproteinase-1 expression is negatively regulated by p38 MAPK in human skin fibroblasts. J Dermatol Sci. 64(2):134-41.
        • Lee JY, et al. (2011) Curcumin induces EGFR degradation in lung adenocarcinoma and modulates p38 activation in intestine: the versatile adjuvant for gefitinib therapy. PLoS One. 6(8):e23756.
        • Riis JL, et al. (2011) CCL27 expression is regulated by both p38 MAPK and IKKβ signalling pathways. Cytokine. 56(3):699-707.

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