Catalog # PM5481

p38α MAP Kinase (C-terminal) Antibody

Mouse Monoclonal

Application / Dilution

Size 100 μl

Species Reactivity Hu, Rt, Ms

MW 38 kDa

Isotype IgG1



p38 MAP kinase (MAPK), also called RK, CSBP, and SAPK2a, is the mammalian orthologue of the yeast HOG kinase. This family of kinases participates in signaling cascades that control cellular responses to cytokines and stress. Four isoforms of p38 MAPK (α,β,γ,δ) have been identified. Similar to the SAPK/JNK pathway, p38 MAPK is activated by a variety of cellular stresses including osmotic shock, inflammatory cytokines, lipopolysaccharides, UV light, and growth factors. MKK3 and SEK activate p38 MAPK by dual phosphorylation at threonine 180 and tyrosine 182. Activated p38 MAPK has been shown to phosphorylate and activate MAPKAP kinase 2 and to phosphorylate the transcription factors ATF-2, Max and MEF2.


Jirmanova, L. et al. (2009) Blood 113(10):2229.
Salvador, J.M. et al. (2005) Nat Immunol. 6(4):390.
Han, J. et al. (1994) Science 265:808.
Lee, J. C. et al. (1994) Nature 372:739.

Western blot analysis of human A431 cells (lanes 1 & 2) and rat A7r5 cells (lanes 3 & 4). The blot was probed with mouse monoclonal anti-p38α (C-terminal) clone M548 at a dilution of 1:250 (lanes 1 & 3) or 1:1000 (lanes 2 & 4).

Immunocytochemical labeling of p38α in aldehyde fixed and NP-40 permeabilized human NCI-H446 lung carcinoma cells. The cells were labeled with mouse monoclonal anti-p38α (PM5481). The antibody was detected using goat anti-mouse DyLight® 594.

Clone M548 was generated from a recombinant protein corresponding to amino acid residues in the C-terminal region of human p38α. This sequence is identical in rat and mouse p38α.

*For more information, see UniProt Accession Q16539
Mouse monoclonal purified with protein G chromatography is supplied in 100µl phosphate-buffered saline, 50% glycerol, 1 mg/ml BSA, and 0.05% sodium azide. Store at –20°C. Stable for 1 year.

The products are are safely shipped at ambient temperature for both domestic and international shipments. Each product is guaranteed to match the specifications as indicated on the corresponding technical data sheet. Please store at -20C upon arrival for long term storage.

This antibody detects a 38 kDa* protein corresponding to the apparent molecular mass of p38α on SDS-PAGE immunoblots of human A431 and rat A7r5 cells.

*All molecular weights (MW) are confirmed by comparison to Bio-Rad Rainbow Markers and to western blot mobilities of known proteins with similar MW.

This kit contains: