Mitogen-activated protein kinases (MAPKs) are a widely conserved family of serine/threonine protein kinases that include three major MAPKs: p38, JNK, and ERK. These MAPKs are involved in many cellular programs such as cell proliferation, differentiation, motility, and death. Upon stimulation, the MAPKs are activated through a sequential protein kinase cascade consisting of MAPKKKs activating MAPKKs followed by dual phosphorylation and activation of MAPKs. p38 and JNK MAPKs participate in signaling cascades that control cellular responses to cytokines and stress. Activated p38 MAPK has been shown to phosphorylate and activate MAPKAP kinase 2 and to phosphorylate the transcription factors ATF-2, Max, and MEF2. Active JNK dimers can translocate to the nucleus to regulate transcription through phosphorylation of c-Jun, ATF-2, and other transcription factors. The ERK1/2 (p44/42) signaling pathway can be activated in response to a diverse range of extracellular stimuli including mitogens, growth factors, and cytokines. Activated ERKs have several downstream targets including p90RSK and Elk-1.
References
Roux, P.P. & Blenis, J. (2004) Microbiol Mol Biol Rev 68:320.
Murphy, L.O. & Blenis, J. (2006) Trends Biochem Sci 31:268.
Owens, D.M. & Keyse, S.M. (2007) Oncogene 26:3203.
Western blot analysis of A431 cells serum starved overnight (lanes 1 & 3) then treated with pervanadate (1 mM) for 30 min. (lanes 2 & 4). The blot was probed with anti-p38α (lanes 1 & 2) or anti-p38 (T180/Y182) (lanes 3 & 4).
Western blot analysis of human A431 cells untreated (lanes 1 & 4), treated with 100 nM calyculin A for 30 min. (lanes 2 & 5), or 100 ng/ml EGF for 60 min. (lanes 3 & 6). The blots were probed with anti-ERK1 (lanes 1, 2, & 3) or anti-ERK1/2 (Thr-202/Tyr-204) (lanes 4, 5, & 6).
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.
*All molecular weights (MW) are confirmed by comparison to Bio-Rad Rainbow Markers and to western blot mobilities of known proteins with similar MW.
Product References:
EM2331 Kyjacova, L. et al. (2015) Cell Death Differ. 22(6):898. WB: human DU145EM2061 Park, K. et al. (2013) Mol Cell Biol. 33(4):752. WB: human keratinocytes
PM1391 Chambers, M.A. et al. (2009) J Physiol. 587:3363. WB: mouse muscle, C2C12
PM1391 Li, W. et al. (2009) AJP Cell Phys. 297:C706. WB: mouse C2C12 cells
This kit contains:
| CATALOG# | DESCRIPTION | SIZE | APPLICATIONS | SPECIES REACTIVITY | MW (kDa) |
| ERK1 (C-terminal region) Mouse mAb | 50 μl | WB, E, ICC, IHC | Hu, Rt, Ms | 44 | |
| ERK1 (Thr-202/Tyr-204)[conserved], phospho-specific Mouse mAb | 50 μl | WB, E, ICC | Hu, Rt, Ms | 44 | |
| JNK1 (C-terminal region) Mouse mAb | 50 μl | WB, E, ICC, IHC | Hu, Rt, Ms | 42 | |
| JNK (Thr-183/Tyr-185), phospho-specific Mouse mAb | 50 μl | WB, E, ICC | Hu, Rt, Ms | 42 | |
| p38 (C-terminal) Mouse mAb | 50 μl | WB, E, ICC | Hu, Rt, Ms | 38 | |
| p38 MAP Kinase (Thr-180/Tyr-182)), phospho-specific Mouse mAb | 50 μl | WB, E, ICC | Hu, Rt, Ms | 28 |
KIT SUMMARY
The MAP kinase activation antibody sampler kit can be used to examine the activation of three major MAPKs: p38, ERK, and JNK. The kit also includes antibodies to monitor total expression levels of p38, ERK1/2, and JNK1.
