Description
General description
42-44 kDa
Mitogen-activated protein kinase 3 (UniProt: P27632; also known as EC:2.7.11.24, MAP kinase 3, MAPK 3. ERT2, Extracellular signal-regulated kinase 1, ERK-1, Insulin-stimulated MAP2 kinase, MAP kinase isoform p44, p44-MAPK, Microtubule-associated protein 2 kinase p44-ERK1) is encoded by the MAPK3 (also known as ERK1, PRKM3) gene (Gene ID: 5595) in human. ERK-1 is a serine/threonine kinase that acts as an essential component of the MAP kinase signal transduction pathway. It is expressed in different tissues and its highest levels have been observed in the nervous system. The MAPK/ERK cascade mediates several diverse biological processes such as cell growth, adhesion, survival, and differentiation through the regulation of transcription, translation, and cytoskeletal rearrangements. It also plays a role in initiation and regulation of meiosis, mitosis, and post-mitotic functions in differentiated cells by phosphorylating a few transcription factors. About 160 substrates have been described for ERKs. The protein kinase domain of ERK-1 is localized to amino acids 42-330 and the TXY motif is located in amino acids 202-204. ERK-1 is phosphorylated by MEK1 and MEK2 on threonine 202 and tyrosine 204 in response to external stimuli like insulin or nerve growth factor and both these phosphorylations are essential for its activity. Three isoforms of ERK-1 have been described that are produced by alternative splicing.
Immunogen
KLH-conjugated phosphopeptide containing the pTEpY motif of Erk1 and Erk2. Clone: 12D4
Application
Detect phospho-MAP Kinase1/2 using this Anti-phospho-MAP Kinase1/2 validated for use in WB, IP, ELISA & IC.
Immunoprecipitation: Use 1-10 μg per immuno-precipitation.
Research Category
Signaling
Research Sub Category
MAP Kinases
Biochem/physiol Actions
Specific for phosphorylated (activated) Erk1 and Erk2. Antibody recognition requires phosphorylation of both the threonine and tyrosine residues of Erk1/Erk2 and will not interact with the non-phosphorylated form of the proteins. Does not cross react with activated SAP Kinase 1 or 2.
Physical form
Format: Purified
Purified mouse monoclonal IgG1k lyophilized from 1 mL 2x PBS / 0.09 % Na-azide / PEG and Sucrose.
Reconstitute with 1 mL H2O (15 min, RT) for a final concentration of 100 μg/mL.
Thiophilic adsoption and size exclusion chromatography
Preparation Note
Stable for 1 year at from date of receipt.
Analysis Note
Control
Positive Antigen Control: Catalog #12-302, EGF-stimulated A431 cell lysate. Add 2.5µL of 2-mercaptoethanol/100µL of lysate and boil for 5 minutes to reduce the preparation. Load 20µg of reduced lysate per lane for minigels.
Evaluated by western blot on RIPA lysates from EGF-stimulated human A431 carcinoma cells.
Western Blot Analysis: 0.1-1.0 μg/mL of this antibody detected phospho-MAPK in RIPA lysates from EGFstimulated human A431 carcinoma cells.
Other Notes
Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.
Legal Information
UPSTATE is a registered trademark of Merck KGaA, Darmstadt, Germany
Disclaimer
Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
