Product Pathways - MAPK Signaling
p44/42 MAPK (Erk1/2) Control Cell Extracts #9194
p44/42 MAPK (Erk1/2) Negative Control Cell Extracts: Total cell extracts from Jurkat cells treated with U0126 (MEK1/2 Inhibitor) #9903 at 10 μM for 1 hour, to serve as a negative control. Supplied in SDS Sample Buffer.p44/42 MAPK (Erk1/2) Positive Control Cell Extracts: Total cell extracts from Jurkat cells treated with TPA #9905 at 200 nM for 10 minutes, to serve as a positive control. Supplied in SDS Sample Buffer.
Western blot analysis of p44/42 MAPK (Erk1/2) Control Cell Extracts, treated with either U0126 or TPA, using Phospho-p44/42 MAPK (Erk1/2) (Thr202/Tyr204) Antibody #9101 (left) or p44/42 MAPK (Erk1/2) Antibody #9102 (right).
Western Blots: As controls, CST recommends using 15 μl of U0126- and TPA-treated p44/42 MAPK (Erk1/2) Cell Extracts. Boil for 3-5 minutes before use.
Mitogen-activated protein kinases (MAPKs) are a widely conserved family of serine/threonine protein kinases involved in many cellular programs, such as cell proliferation, differentiation, motility, and death. The p44/42 MAPK (Erk1/2) signaling pathway can be activated in response to a diverse range of extracellular stimuli including mitogens, growth factors, and cytokines (1-3), and research investigators consider it an important target in the diagnosis and treatment of cancer (4). Upon stimulation, a sequential three-part protein kinase cascade is initiated, consisting of a MAP kinase kinase kinase (MAPKKK or MAP3K), a MAP kinase kinase (MAPKK or MAP2K), and a MAP kinase (MAPK). Multiple p44/42 MAP3Ks have been identified, including members of the Raf family, as well as Mos and Tpl2/COT. MEK1 and MEK2 are the primary MAPKKs in this pathway (5,6). MEK1 and MEK2 activate p44 and p42 through phosphorylation of activation loop residues Thr202/Tyr204 and Thr185/Tyr187, respectively. Several downstream targets of p44/42 have been identified, including p90RSK (7) and the transcription factor Elk-1 (8,9). p44/42 are negatively regulated by a family of dual-specificity (Thr/Tyr) MAPK phosphatases, known as DUSPs or MKPs (10), along with MEK inhibitors, such as U0126 and PD98059.
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- Dalby, K.N. et al. (1998) J Biol Chem 273, 1496-505.
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- 9903 U0126
- 4370 Phospho-p44/42 MAPK (Erk1/2) (Thr202/Tyr204) (D13.14.4E) XP® Rabbit mAb
- 4695 p44/42 MAPK (Erk1/2) (137F5) Rabbit mAb
- 9100 PhosphoPlus® p44/42 MAPK (Erk1/2) (Thr202/Tyr204) Antibody Kit
- 4376 Phospho-p44/42 MAPK (Erk1/2) (Thr202/Tyr204) (20G11) Rabbit mAb
- 4377 Phospho-p44/42 MAPK (Erk1/2) (Thr202/Tyr204) (197G2) Rabbit mAb
- 9101 Phospho-p44/42 MAPK (Erk1/2) (Thr202/Tyr204) Antibody
- 9106 Phospho-p44/42 MAPK (Erk1/2) (Thr202/Tyr204) (E10) Mouse mAb
- 4696 p44/42 MAPK (Erk1/2) (L34F12) Mouse mAb
- 9102 p44/42 MAPK (Erk1/2) Antibody
- 9107 p44/42 MAPK (Erk1/2) (3A7) Mouse mAb
- 9108 p42 MAP Kinase (Erk2) Antibody
- 9997 Tris Buffered Saline with Tween 20 (TBST-10X)
- 9998 BSA
- 9999 Nonfat Dry Milk
- 7074 Anti-rabbit IgG, HRP-linked Antibody
- 7076 Anti-mouse IgG, HRP-linked Antibody
- 7720 Prestained Protein Marker, Broad Range (Premixed Format)
- 7727 Biotinylated Protein Ladder Detection Pack
- 7003 20X LumiGLO® Reagent and 20X Peroxide
- 7722 Blue Loading Buffer Pack
- 7723 Red Loading Buffer Pack
For Research Use Only. Not For Use In Diagnostic Procedures.