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 MAPK, p38a, beta, gamma (also known as Erk6 or SAPK3), and delta (also known as SAPK4) have been identified.
Similar to the SAPK/JNK pathway, p38 MAPK is activated by a variety of cellular stresses including osmotic shock, inflammatory cytokines, lipopolysaccharide (LPS), UV light, and growth factors (1-5).
MKK3, MKK6, and SEK activate p38 MAPK by phosphorylation at Thr180 and Tyr182.
Activated p38 MAPK 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).SB203580 (4-(4-fluorophenyl)-2-(4-methylsulfinylphenyl)-5-(4-pyridyl)-imidazole) is a selective inhibitor of p38 MAPK.
This compound inhibits the activation of MAPKAPK-2 by p38 MAPK and subsequent phosphorylation of HSP27 (9).
SB203580 inhibits p38 MAPK catalytic activity by binding to the ATP-binding pocket, but does not inhibit phosphorylation of p38 MAPK by upstream kinases (10).
Applications:Suitable for use in Flow Cytometry, Western Blot, Immunoprecipitation, Immunocytochemistry.
Other applications not tested.
Recommended Dilution:Western Blot: 1:500-1:2000Immunocytochemistry: 1:50-1:100Immunoprecipitation: 1:10-1:100Flow Cytometry: 1:50-1:200Optimal dilutions to be determined by the researcher.
Storage and Stability:May be stored at 4°C for short-term only.
Aliquot to avoid repeated freezing and thawing.
Store at -20°C.
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.
仕様
Size:100ul
Host:rabbit
Source Antibody:human
Grade:Affinity Purified
Purity:Purified by affinity chromatography.
Form:Supplied as a liquid in PBS, pH 7.3, 0.02% sodium azide, 50% glycerol.
Specificity:Recognizes MAPK14. Species Crossreactivity: human, mouse, rat
Isotype:IgG
Calc Applications Abbrev:FC IC IP WB
Calc Crossreactivity:Hu Mo Rt
Immunogen:Synthetic peptide corresponding to human MAPK14.