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Phospho-MEK1/2 (Ser221) (166F8) Rabbit mAb (Alexa Fluor® 647 Conjugate) #16780

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Flow Cytometry Image 1: Phospho-MEK1/2 (Ser221) (166F8) Rabbit mAb (Alexa Fluor® 647 Conjugate)
Flow cytometric analysis of fixed/permeabilized Jurkat cells, treated with U0126 #9903 (10 µM, 2 hr; blue) or treated with TPA (12-O-Tetradecanoylphorbol-13-Acetate) #4174 (200 nM, 30 min; green), using Phospho-MEK1/2 (Ser221) (166F8) Rabbit mAb (Alexa Fluor® 647 Conjugate) (solid lines) or concentration-matched Rabbit (DA1E) mAb IgG XP® Isotype Control (Alexa Fluor® 647 Conjugate) #2985 (dashed lines).

To Purchase # 16780

Supporting Data

REACTIVITY H M R Mk
SENSITIVITY Endogenous
MW (kDa)
Source/Isotype Rabbit IgG
Application Key:
  • F-Flow Cytometry 
Species Cross-Reactivity Key:
  • H-Human 
  • M-Mouse 
  • R-Rat 
  • Mk-Monkey 
  • Related Products

Product Information

Product Description

This Cell Signaling Technology antibody is conjugated to Alexa Fluor® 647 fluorescent dye under optimal conditions and tested in-house for direct flow cytometric analysis in human cells. This antibody conjugate is expected to exhibit the same species cross-reactivity as the unconjugated Phospho-MEK1/2 (Ser221) (166F8) Rabbit mAb #2338.

Product Usage Information

Application Dilution
Flow Cytometry (Fixed/Permeabilized) 1:50

Storage

Supplied in PBS (pH 7.2), less than 0.1% sodium azide, and 2 mg/mL BSA. Store at 4°C. Do not aliquot the antibody. Protect from light. Do not freeze.

Protocol

Specificity / Sensitivity

Phospho-MEK1/2 (Ser221) (166F8) Rabbit mAb (Alexa Fluor® 647 Conjugate) detects endogenous levels of MEK1/2 only when phosphorylated at Ser221.

Species Reactivity:

Human, Mouse, Rat, Monkey

The antigen sequence used to produce this antibody shares 100% sequence homology with the species listed here, but reactivity has not been tested or confirmed to work by CST. Use of this product with these species is not covered under our Product Performance Guarantee.

Species predicted to react based on 100% sequence homology:

Dog

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser221 of human MEK1/2 protein.

Background

MEK1 and MEK2, also called MAPK or Erk kinases, are dual-specificity protein kinases that function in a mitogen activated protein kinase cascade controlling cell growth and differentiation (1-3). Activation of MEK1 and MEK2 occurs through phosphorylation of two serine residues at positions 217 and 221, located in the activation loop of subdomain VIII, by Raf-like molecules. MEK1/2 is activated by a wide variety of growth factors and cytokines and also by membrane depolarization and calcium influx (1-4). Constitutively active forms of MEK1/2 are sufficient for the transformation of NIH/3T3 cells or the differentiation of PC-12 cells (4). MEK activates p44 and p42 MAP kinase by phosphorylating both threonine and tyrosine residues at sites located within the activation loop of kinase subdomain VIII.

Pathways

Explore pathways related to this product.


For Research Use Only. Not For Use In Diagnostic Procedures.
Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
Alexa Fluor is a registered trademark of Life Technologies Corporation.
This product is provided under an intellectual property license from Life Technologies Corporation. The transfer of this product is conditioned on the buyer using the purchased product solely in research conducted by the buyer, excluding contract research or any fee for service research, and the buyer must not (1) use this product or its components for (a) diagnostic, therapeutic or prophylactic purposes; (b) testing, analysis or screening services, or information in return for compensation on a per-test basis; or (c) manufacturing or quality assurance or quality control, and/or (2) sell or transfer this product or its components for resale, whether or not resold for use in research. For information on purchasing a license to this product for purposes other than as described above, contact Life Technologies Corporation, 5791 Van Allen Way, Carlsbad, CA 92008 USA or outlicensing@lifetech.com.
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