MAP Kinase 12 (Mitogen-activated Protein Kinase 12, MAPK 12, MAPK12, PRKM12, Extracellular Signal-regulated Kinase 6, ERK6, ERK-6, Mitogen-activated Protein Kinase p38 gamma, MAP Kinase p38 gamma, P38gamma, Stress-activated Protein Kinase 3, SAPK3, SAPK-3

p38 MAP kinase (MAPK), also called RK (1) or CSBP (2), is the mammalian orthologue of the yeast HOG kinase which participates in a signaling cascade controlling cellular responses to cytokines and stress (1-4). Four isoforms of p38 MAP kinase, p38 alpha, -beta, -gamma (also known as ERK6 or SAPK3) and -delta (also known as SAPK4) have been identified. Similar to the SAPK/JNK pathway, p38 MAP kinase is activated by a variety of cellular stresses including osmotic shock, inflammatory cytokines, lipopolysaccharides (LPS), UV light and growth factors (1-5). MKK3 and SEK activate p38 MAP kinase by phosphorylation at Thr180 and Tyr182. Activated p38 MAP kinase has been shown to phosphorylate and activate MAPKAP kinase 2 (3) and to phosphorylate the transcription factors ATF-2 (5), Max (6) and MEF2 (5-8). Although there are many similarities between the four p38 isoforms, there are also some important differences that suggest that the various members may regulate specific functions, and the presence of multiple p38s may provide a mechanism for the generation of tissue-specific or stimulus- specific responses to the activation of the p38 signal transduction pathway (9,10).\n\nApplications: \nSuitable for use in ELISA, Western Blot and Immunoprecipitation. Other applications not tested.\n\nRecommended Dilution:\nWestern blot 1:1000\nImmunoprecipitation 1:100\nOptimal dilutions to be determined by the researcher.\n\nStorage and Stability:\nMay be stored at 4 degrees C for short-term only. For long-term storage, store at -20 degrees C. Aliquots are stable for at least 6 months at -20 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.

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