Invitrogen™ Phospho-ERK1/2 (Thr202, Tyr204) Monoclonal Antibody (MILAN8R), Alexa Fluor™ 488, eBioscience™, Invitrogen™

Catalog No.	Quantity
50-112-4617	100 Tests

Catalog No. 50-112-4617 Supplier Invitrogen™ Supplier No. 53910942

Description

Mouse Monoclonal Antibody

Description: This MILAN8R monoclonal antibody recognizes human and mouse extracellular signal-regulated kinases 1 and 2 (also known as ERK1/2, p44/p42, or MAPK3/1) when phosphorylated on T202/Y204. ERK1/2 belong to a family of conserved serine/threonine protein kinases known as mitogen-activated protein kinases (MAPKs) that are involved in many cellular programs such as proliferation, differentiation, motility, and survival. ERK1/2 signaling is activated in response to numerous extracellular stimuli including mitogens, growth factors, and cytokines. The primary activators of ERK1/2 are MEK1 and MEK2 which act by phosphorylating the activation loop residues T202/Y204 and T185/Y187 in ERK1 and ERK2, respectively. Several downstream targets of ERK1/2 have been identified, including p90RSK and the transcription factor Elk-1. ERK1/2 are negatively regulated by MAPK phosphatases, known as DUSPs or MKPs, as well as by chemical inhibitors of MEK including U0126 and PD98059. Disruption of the ERK pathway is common in many types of cancer. Specificity of this MILAN8R clone was determined by ELISA, flow cytometry, and western blotting. Applications Reported: This MILAN8R antibody has been reported for use in intracellular staining followed by flow cytometric analysis. Applications Tested: This MILAN8R antibody has been tested by intracellular staining followed by flow cytometric analysis of normal human peripheral blood cells. This can be used at less than or equal to 0.

ERK1 and ERK2 are widely expressed and are involved in the regulation of meiosis, mitosis, and postmitotic functions in differentiated cells. Many different stimuli, including growth factors, cytokines, virus infection, ligands for heterotrimeric guanine nucleotide-binding protein (G protein)-coupled receptors and transforming agents, activate the ERK1 and ERK2 pathways. When growth factors bind to the receptor tyrosine kinase, Ras interacts with Raf, the serine/threonine protein kinase and activates it as well. Once actived, Raf phosphorylates serine residue in 2 further kinases, MEK1/2, which in turn phosphorylates tyrosine/threonine in extracellular-signal regulated kinase (ERK) 1/2. Upon activation, the ERKs either phosphorylate a number of cytoplasmic targets or migrate to the nucleus, where they phosphorylate and activate a number of transcription factors such as c-Fos and Elk-1.

Specifications

• Antigen: Phospho-ERK1/2 (Thr202, Tyr204)
• Applications: Flow Cytometry
• Classification: Monoclonal
• Clone: MILAN8R
• Concentration: 5 μL/Test
• Conjugate: Alexa Fluor 488
• Formulation: PBS with BSA and 0.09% sodium azide; pH 7.2
• Gene: MAPK1
• Gene Accession No.: P27361, P28482, P63085, Q63844
• Gene Alias: 12559; 9030612K14Rik; AA407128; AU018647; BcDNA:RE08694; C78273; CG12559; CG12559-PA; CG12559-PC; CG12559-PD; CG12559-PE; CG12559-PG; CG12559-PH; CG12559-PI; CG18732; CT34260; CT39192; DERK; D-ERK; DERK-A; Diphospho-ERK; dm-dpERK; Dmel\CG12559; Dmel_CG12559; DmErk; DmERKA; DmERK-A; DmMAPK; dpERK; dp-ERK; dpERK1; dpMAPK; drosophila ERK; Dsor2; E(sina)7; EC2-1; EK2-1; enhancer of seven in absentia 7; ERK; Erk MAP kinase; Erk/Map kinase; ERK/rolled; Erk1; Erk-1; erk1 erk2; Erk1/2; ERK1b; ERK2; ERK-2; ERKA; ERK-A; ERT1; ERT2; Esrk1; extracellular signal-regulated kinase; extracellular signal-regulated kinase (ERK2); extracellular signal-regulated kinase 1; Extracellular signal-regulated kinase 2; extracellular signal-regulated kinase A; extracellular signal-regulated kinase-1; extracellular signal-regulated kinase-2; extracellular signal-related kinase 1; Extracellular-regulated kinase A; extracellular-signal-regulated kinase 2; Extracellular-signal-related kinase A; EY2-2; fi06b09; GroupII; HS44KDAP; HUMKER1A; I79_009500; I79_018350; insulin-stimulated MAP2 kinase; l(2)41Ac; l(2R)EMS45-39; M phase MAP kinase; MAP kinase; MAP kinase 1; MAP kinase 2; MAP kinase 3; MAP kinase isoform p42; MAP kinase isoform p44; MapK; MAP-k; MAPK 1; MAPK 2; MAPK 3; MAPK1; mapk1.S; mapk1a; mapk1-a; mapk1-b; mapk2; mapk3; MAP-kinase; MBP kinase; Microtubule-associated protein 2 kinase; mitogen activated protein kinase; mitogen activated protein kinase 1; mitogen activated protein kinase 3; mitogen-activated 3; mitogen-activated protein kinase; mitogen-activated protein kinase 1; mitogen-activated protein kinase 1 S homeolog; mitogen-activated protein kinase 1a; mitogen-activated protein kinase 2; Mitogen-activated protein kinase 3; Mitogen-activated protein kinase ERK-A; MNK1; mpk1; Mtap2k; Myelin basic protein kinase; Myelin xP42 protein kinase; p38; p40; p41; p41mapk; p42; p42 MAP Kinase; P42MAPK; p42-MAPK; p44; p44 MAP kinase; p44erk1; p44-ERK1; p44mapk; p44-MAPK; pERK; p-ERK; phospho-ERK; pMapK; pp42/MAP kinase; Prkm1; PRKM2; Prkm3; protein kinase; Protein rolled; protein tyrosine kinase ERK2; RE08694p; RL; rl/ERK; rl/MAPK; rll; rl-PA; rl-PC; rl-PD; rl-PE; rl-PG; rl-PH; rl-PI; roll; rolled; sem; sevenmaker; SR2-1; Su(Raf)2B; wu:fi06b09; XELAEV_18010534mg; xp42; zERK1; zERK2
• Gene Symbols: MAPK1, MAPK3
• Host Species: Mouse
• Purification Method: Affinity chromatography
• Quantity: 100 Tests
• Regulatory Status: RUO
• Primary or Secondary: Primary
• Gene ID (Entrez): 26413, 26417, 5594, 5595
• Target Species: Human, Mouse
• Content And Storage: 4°C, store in dark, DO NOT FREEZE!
• Product Type: Antibody
• Form: Liquid
• Isotype: IgG1 κ

Frequently Asked Questions (FAQs)

How does eBioscience determine the specificity of their phosphorylation-specific antibodies?

Antibodies are tested and validated in a variety of ways. First, we verify that in a panel of cells in which different pathways have been induced, we see phosphorylation specific staining only in the cells in which the specific pathway of interest has been activated. Second, we verify that phosphorylation specific staining is observed only in cell types in which the protein is expressed and not in cell types in which the protein is not expressed. Third, whenever possible, western immunoblotting is used to confirm the presence of a band(s) of the appropriate size(s) in stimulated/treated cells (and not in unstimulated/untreated cells, as appropriate).

How long can cells that have been fixed and placed in methanol be stored for use with eBioscience antibodies? What is the recommended storage temperature? How about storage of fixed cells in eBioscience fixation buffers?

We have data demonstrating that fixed cells stored in methanol are stable at -20 degrees C or at -80 degrees C for several weeks. We do not recommend storing fixed cells in eBioscience Foxp3/Transcription Factor Buffer. However, cells fixed with eBioscience Foxp3/Transcription Factor Buffer or eBioscience Intracellular (IC) fixation buffer can be stored in eBioscience IC fixation buffer for up to 3 days at 4 degrees C in the dark.
Note: Please be aware that higher compensation values may be seen with tandem dyes if any other fixative is used apart from eBioscience IC fixation buffer, for 3-day storage.

What is the optimal protocol for eBioscience phosphorylation-specific antibodies?

Each antibody has been tested in three different buffer systems: IC fixation and permeabilization, Foxp3/Transcription Factor Buffer, and IC fixation Buffer/Methanol. The recommended buffer system(s) will be noted on the Technical Data Sheet for the specific antibody.

What is the best way to maintain surface staining when using the methanol-based protocol?

Because methanol can destroy the epitope recognized by some antibodies, ideally surface staining would be performed at the beginning of the protocol with a methanol-resistant fluorochrome (like eFluor 450, FITC, and eFluor 660).
Please recognize that surface staining before stimulation can have undesired effects due to activation of the cell caused by antibody binding. We recommend staining after stimulation/treatment, fixation, and methanol treatment.

Can I use other buffer systems from other companies when using eBioscience phosphorylation-specific antibodies?

In general, you can use other companies' buffer systems provided that their buffers are of a similar composition as the buffers recommended. Be aware that results will vary depending upon the buffer system used. eBioscience antibodies have been optimized for use in eBioscience buffers and we have not tested all of our antibodies in other buffer systems. Thus, we highly recommend using our optimized protocol and buffer systems.

What are the appropriate controls to run when using eBioscience phosphorylation-specific antibodies?

It is important to understand whether the stimulation/treatment results in an upregulation or a down regulation of the phosphorylation event. Thus, it is recommended that changes in phosphorylation levels in stimulated/treated versus unstimulated/untreated cells be compared. A histogram or density plot overlay these two treatments will provide a better assessment of a change in phosphorylation event than using isotype controls.

Can I perform phosphorylation specific staining and stain for intracellular cytokines at the same time when using eBioscience phosphorylation-specific antibodies?

In theory, if the buffer systems are compatible for the antibodies of interest, this can be done. In practice, cytokine translation and phosphorylation events do not typically occur in the same timeframe, therefore, it may be difficult to detect both events in the same sample. The results will be depended on the kinetics and should be determined for each system and protein of interest.

When using eBioscience phosphorylation-specific antibodies, can I perform phosphorylation specific staining together with transcription factor staining at the same time? If so, what buffer and protocol do I use?

In theory, this can be done if the antibodies against both the transcription factor and the phosphorylated protein work in the same buffer system. For example, Anti-Human/Mouse phsopho-H2AX and all transcription factor eBioscience antibodies offered will work in the Foxp3/Transcription Factor Buffer System (Cat. No. 00-5523-00).

For eBioscience phosphorylation-specific antibodies, can total and phosphorylated protein be analyzed in parallel?

In theory, this can be done if the antibodies to both proteins work in the same buffer system and if the antibodies recognize different epitopes. Please refer to the individual Technical Data Sheets for information about buffer compatibility. Also, consider using eBioscience InstantOne ELISA Kits for immunoassay quantitation of both total and phosphorylated proteins such as AKT1/2/3, JNK1/2/3, NFκB, STAT3, and STAT5.

For Research Use Only.