Alexa Fluor® 647 anti-Phosphotyrosine Antibody

Pricing & Availability
PY20 (See other available formats)
Regulatory Status
Other Names
Mouse IgG2b, κ
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Product Citations
Hydrogen peroxide stimulated EL4 cells intracellularly stained with PY20 Alexa Fluor® 647
  • PY20_Alx647_020608
    Hydrogen peroxide stimulated EL4 cells intracellularly stained with PY20 Alexa Fluor® 647
See Alexa Fluor® 647 spectral data
Cat # Size Price Quantity Avail. Save
309308 100 µg $225
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Phosphorylation is a common modification of proteins that can result in alterations in protein function, protein-protein association, cellular localization, and protein-half life. Phosphorylation can occur on threonine, serine, and tyrosine residues. The PY20 monoclonal antibody recognizes phosphorylated tyrosine residues in all species tested (human, mouse, rat, dog, chicken, and frog). The PY20 antibody has been shown to be useful for flow cytometry, immunoprecipitation, Western blotting, and immunofluorescence staining.

Product Details
Technical data sheet

Product Details

Human, Mouse, Rat, All Species
Antibody Type
Host Species
KLH-conjugated phosphotyrosine
Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide.
The antibody was purified by affinity chromatography and conjugated with Alexa Fluor® 647 under optimal conditions.
0.5 mg/mL
Storage & Handling
The antibody solution should be stored undiluted between 2°C and 8°C, and protected from prolonged exposure to light. Do not freeze.

ICFC - Quality tested

Recommended Usage

Each lot of this antibody is quality control tested by intracellular immunofluorescent staining with flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is ≤ 0.125 µg per 106 cells in 100 µL volume. It is recommended that the reagent be titrated for optimal performance for each application.

NOTE: Do not use dilution buffer containing milk as they may interfere with antibody binding to proteins of interest. Dilution and blocking buffers containing 4% bovine serum albumin are recommended for use with this antibody.

* Alexa Fluor® 647 has a maximum emission of 668 nm when it is excited at 633nm / 635nm.

Alexa Fluor® and Pacific Blue™ are trademarks of Life Technologies Corporation.

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Excitation Laser
Red Laser (633 nm)
Application Notes

Additional reported applications (for the relevant formats) include: immunoprecipitation1,2, Western blotting1,2, immunocytochemistry3.

Application References

(PubMed link indicates BioLegend citation)
  1. Vuori K, et al. 1995. J. Biol. Chem. 270:22259. (IP, WB)
  2. Glenney J, et al. 1988. J. Immunol. Meth. 109:277. (IP, WB)
  3. Prahalad P, et al. 2004. Am J Physiol Cell Physiol 286:C693. (IF)
  4. Zentillin L, et al. 2009. FASEB J. 24:1467. PubMed
  5. Philipsen L, et al. 2013. Mol Cell Proteomics. 12:2551. PubMed
  6. Cespedes PF, et al. 2014. PNAS. 111:3214. PubMed
Product Citations
  1. Ma F, et al. 2012. J Biol Chem. 287:38073. PubMed
  2. Ramello M, et al. 2014. Cell Death Dis. 6:1507. PubMed
  3. Martinez-Martin N, et al. 2016. Nat Commun. 7:11473. PubMed
AB_528951 (BioLegend Cat. No. 309308)

Antigen Details



Phosphorylation of specific tyrosine residues, signal transduction, cell cycle progression, oncogenic transformation
Biology Area
Cell Biology, Immunology, Signal Transduction
Molecular Family
Phospho-Proteins, Protein Kinases/Phosphatase
Gene ID
5800 View all products for this Gene ID
View information about Phosphotyrosine on

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*These products may be covered by one or more Limited Use Label Licenses (see the BioLegend Catalog or our website, BioLegend products may not be transferred to third parties, resold, modified for resale, or used to manufacture commercial products, reverse engineer functionally similar materials, or to provide a service to third parties without written approval of BioLegend. By use of these products you accept the terms and conditions of all applicable Limited Use Label Licenses. Unless otherwise indicated, these products are for research use only and are not intended for human or animal diagnostic, therapeutic or commercial use.


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This data display is provided for general comparisons between formats.
Your actual data may vary due to variations in samples, target cells, instruments and their settings, staining conditions, and other factors.
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