Our Anti-ERK/MAPK (Thr202/Tyr204) rabbit polyclonal phosphospecific primary antibody from PhosphoSolutions is produced in-house. It detects human, mouse, and rat ERK/MAPK (Thr202/Tyr204) and is antigen affinity purified from pooled serum. It is great for use in WB, IHC, ICC.
Immunostaining of neurons in the frontal cortex of saline treated mouse brain identifying cytoplasmic and nuclear staining of ERK/MAPK when phosphorylated at Thr202/Tyr204 (cat. p160-2024, red, 1:500). The intense nuclear staining of a few neurons shows stimulation of the neuron resulting in translocation of the protein. The blue is staining nuclei with DAPI. Photo courtesy of Robert Wine.
ERK1 (Thr-202/Tyr-204), ERK2 (Thr-185 and Tyr-187)
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 ERK1/2 (p44/42) signaling pathway can be activated in response to a diverse range of extracellular stimuli including mitogens, growth factors, and cytokines. Upon stimulation, a sequential three-part protein kinase cascade is initiated, consisting of a MAP kinase kinase kinase (MAPKKK), a MAP kinase kinase (MAPKK), and a MAP kinase (MAPK). Multiple ERK1/2 MAPKKKs 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. MEK1 and MEK2 activate ERK1 and ERK2 through phosphorylation of activation loop residues Thr-202/Tyr-204 and Thr-185/Tyr-187, respectively. ERK1/2 are negatively regulated by a family of dual-specificity (Thr/Tyr) MAPK phosphatases. Several downstream targets of ERK1/2 have been identified, including p90RSK and the transcription factor Elk-1.
Antigen Affinity Purified from Pooled Serum
Polyclonal
IgG
ICC, IHC, WB
Rabbit
MAPK1/2
42/44 kDa
Synthetic phospho-peptide corresponding to amino acid residues surrounding Thr202/Tyr204 of rat ERK/MAPK conjugated to keyhole limpet hemocyanin (KLH).
Storage at -20°C is recommended, as aliquots may be taken without freeze/thawing due to presence of 50% glycerol. Stable for at least 1 year at -20°C.
Liquid
Prepared from pooled rabbit serum by affinity purification via sequential chromatography on phospho and non-phosphopeptide affinity columns.
10 mM HEPES (pH 7.5), 150 mM NaCl, 100 µg per ml BSA and 50% glycerol.
WB: 1:1000
IHC: 1:100-1:500
ICC: 1:100-1:250
Unconjugated
Specific for endogenous levels of the ~42 - 44 kDa ERK/MAPK protein phosphorylated at Thr202 and Tyr204. Immunolabeling is completely eliminated by treatment with λ-phosphatase.
Phosphorylated
Thr202, Tyr204
Western blots performed on each lot.
For research use only. Not intended for therapeutic or diagnostic use. Use of all products is subject to our terms and conditions, which can be viewed on our website.
After date of receipt, stable for at least 1 year at -20°C.
Erickson, C.A., et al. 2019. Initial analysis of peripheral lymphocytic extracellular signal related kinase activation in autism. Journal of Psychiatric Research, 84, pp.153-160.
Iwanga, R., et al. 2012. Expression of Six1 in luminal breast cancers predicts poor prognosis and promotes increases in tumor initiating cells by activation of extracellular signal-regulated kinase and transforming growth factor-beta signaling pathways. Breast Cancer Research, 14(4), p.R100.
Erickson, C.A., et al. 2017. Initial analysis of peripheral lymphocytic extracellular signal related kinase activation in autism. Journal of Psychiatric Research, 84, pp.153-160.
Morgan, J.E., et al. 2015. The class II transactivator (CIITA) is regulated by post-translational modification cross-talk between ERK1/2 phosphorylation, mono-ubiquitination and Lys63 ubiquitination. Bioscience Reports, 35(4).
