Synthetic phosphopeptide corresponding to residues around Thr180/Tyr182 of human p38 MAP kinase.
P38 MAP kinase (MAPK), also called RK (3) or CSBP (2), is the mammalian homologue of the yeast HOG kinase and participates in a signaling cascade controlling cellular responses to cytokines and stress (1-4). Four isoforms of p38 MAP kinase, alpha, beta, gamma and delta, have been identified so far. Like 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 threonine 180 and tyrosine 182. 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). Applications: Suitable for use in Immunocytochemistry, Immunofluorescence, Flow Cytometry, Western Blot and Immunoprecipitation. Other applications not tested. Recommended Dilution: Western Blot: 1:2000 Immunoprecipitation: 1:50 Flow Cytometry (Fixed/Permeabilized): 1:400 - 1:1600 Immunofluorescence (IC): 1:400 Optimal dilutions to be determined by the researcher. Storage and Stability: May be stored at 4C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20C. Aliquots are stable for 12 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
