Western Blotting
Western blot analysis of extracts from HeLa cells, transfected with 100 nM SignalSilence
®
Control siRNA (Unconjugated) #6568 (-), SignalSilence
®
p38 MAPK siRNA I #6564 (+) or SignalSilence
®
p38 MAPK siRNA II (+), using p38 MAPK Antibody #9212 and α-Tubulin (11H10) Rabbit mAb #2125. The p38 MAPK antibody confirms silencing of p38 MAPK expression while the α-Tubulin (11H10) Rabbit mAb is used to control for loading and specificity of p38 MAPK siRNA.
Western Blotting
Western blot analysis of extracts from C6 cells, untreated or anisomycin-treated, and NIH/3T3 cells, untreated or UV-treated, using phospho-p38 MAPK (Thr180/Tyr182) Antibody #9211 (upper) or p38 MAPK Antibody (lower).
Western Blotting
Western blot analysis of extracts from NIH/3T3 cells, untreated or UV-treated for the indicated times, using Phospho-p38 MAPK (Thr180/Tyr182) Antibody #9211 (upper) or p38 MAPK Antibody (lower).
IHC-P (paraffin)
Immunohistochemical analysis of paraffin-embedded human breast carcinoma, showing nuclear and cytoplasmic localization, using p38 MAPK Antibody.
Flow Cytometry
Flow cytometric analysis of Jurkat cells, using p38 MAPK Antibody (blue) compared to a nonspecific negative control antibody (red).
IF-IC
Confocal immunofluorescent images of HeLa cells-/+ UV light labeled with #9212 p38 MAPK (green) exhibiting cytoplasmic localization in untreated cells (left) and nuclear localization in treated cells (right). Red = Actin filaments (phalloidin).
p38 MAP kinase (MAPK), also called RK (1) or CSBP (2), is the mammalian orthologue of the yeast HOG kinase that participates in a signaling cascade controlling cellular responses to cytokines and stress (1-4). Four isoforms of p38 MAP kinase, p38α, β, γ (also known as ERK6 or SAPK3) and δ (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, MKK6 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).
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