Date published: 2025-10-14

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Phosphotyrosine Antibody (PY20): sc-508

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Datasheets
  • Phosphotyrosine Antibody (PY20) is a mouse monoclonal IgG2b κ, cited in 1,325 publications, provided at 200 µg/ml
  • raised against p-Tyr
  • Phosphotyrosine Antibody (PY20) is recommended for detection of broad species by WB, IP, IF, IHC(P) and FCM
  • Anti-Phosphotyrosine Antibody (PY20) is available conjugated to agarose for IP; HRP for WB, IHC(P) and ELISA; and to either phycoerythrin or FITC for IF, IHC(P) and FCM
  • also available conjugated to Alexa Fluor® 488, Alexa Fluor® 546, Alexa Fluor® 594 or Alexa Fluor® 647 for WB (RGB), IF, IHC(P) and FCM, and for use with RGB fluorescent imaging systems, such as iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • also available conjugated to Alexa Fluor® 680 or Alexa Fluor® 790 for WB (NIR), IF and FCM; for use with Near-Infrared (NIR) detection systems, such as LI-COR®Odyssey®, iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • m-IgG Fc BP-HRP, m-IgG2b BP-HRP and m-IgGκ BP-HRP are the preferred secondary detection reagents for Phosphotyrosine Antibody (PY20) for WB and IHC(P) applications. These reagents are now offered in bundles with Phosphotyrosine Antibody (PY20) (see ordering information below).

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p-Tyr Antibody (PY20) is a mouse monoclonal IgG2b kappa light chain antibody that detects phosphotyrosine across multiple species through western blotting (WB), immunoprecipitation (IP), immunofluorescence (IF), immunohistochemistry with paraffin-embedded sections (IHCP), and flow cytometry (FCM). Anti-phosphotyrosine antibody (PY20) comes in non-conjugated form and various conjugates, including agarose, horseradish peroxidase (HRP), phycoerythrin (PE), fluorescein isothiocyanate (FITC), and multiple Alexa Fluor® conjugates. Phosphotyrosine plays a crucial role in cellular signaling, particularly in regulating protein tyrosine kinases, which mediate signal transduction pathways. These kinases fall into two main groups: receptor tyrosine kinases and non-receptor tyrosine kinases, with Src kinases being a key example of the latter. Src kinases typically localize to the inner plasma membrane, acting as signal transducers alongside surface receptors lacking intracellular catalytic domains. Receptor tyrosine kinases include over fifty members across fourteen families, and ligand-induced tyrosine phosphorylation triggers receptor dimerization and autophosphorylation of specific phosphotyrosine residues within cytoplasmic domains. These phosphorylated residues serve as binding sites for cytoplasmic signaling molecules, influencing various cellular processes. Phosphotyrosine monoclonal antibody (PY20) serves as a valuable tool for characterizing and purifying phosphotyrosine-containing proteins, advancing our understanding of cellular signaling and function.

For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.

Alexa Fluor® is a trademark of Molecular Probes Inc., OR., USA

LI-COR® and Odyssey® are registered trademarks of LI-COR Biosciences

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Phosphotyrosine Antibody (PY20)

sc-508
200 µg/ml
$316.00

Phosphotyrosine Antibody (PY20): m-IgG Fc BP-HRP Bundle

sc-528116
200 µg Ab; 10 µg BP
$354.00

Phosphotyrosine Antibody (PY20): m-IgGκ BP-HRP Bundle

sc-520417
200 µg Ab, 40 µg BP
$354.00

Phosphotyrosine Antibody (PY20): m-IgG2b BP-HRP Bundle

sc-549995
200 µg Ab; 10 µg BP
$354.00

Phosphotyrosine Antibody (PY20) AC

sc-508 AC
500 µg/ml, 25% agarose
$416.00

Phosphotyrosine Antibody (PY20) HRP

sc-508 HRP
200 µg/ml
$316.00

Phosphotyrosine Antibody (PY20) FITC

sc-508 FITC
200 µg/ml
$330.00

Phosphotyrosine Antibody (PY20) PE

sc-508 PE
200 µg/ml
$343.00

Phosphotyrosine Antibody (PY20) Alexa Fluor® 488

sc-508 AF488
200 µg/ml
$357.00

Phosphotyrosine Antibody (PY20) Alexa Fluor® 546

sc-508 AF546
200 µg/ml
$357.00

Phosphotyrosine Antibody (PY20) Alexa Fluor® 594

sc-508 AF594
200 µg/ml
$357.00

Phosphotyrosine Antibody (PY20) Alexa Fluor® 647

sc-508 AF647
200 µg/ml
$357.00

Phosphotyrosine Antibody (PY20) Alexa Fluor® 680

sc-508 AF680
200 µg/ml
$357.00

Phosphotyrosine Antibody (PY20) Alexa Fluor® 790

sc-508 AF790
200 µg/ml
$357.00

Hello! Please tell me if p-Tyr Antibody (PY20): sc-508 is working in ELISA assay. If yes, could you recommend me a starting dilution range! I want to know if the p-Tyr Antibody (PY20) HRP variant is recommended for ELISA and in what dilution.

Asked by: Rodica
Thank you for your question. p-Tyr Antibody (PY20): sc-508 is recommended for detection of broad species by WB, IP, IF, IHC(P) and FCM. It is also available conjugated to HRP for ELISA. The starting dilution is 1:30, with a dilution range of 1:30-1:3000.
Answered by: Tech Support Europe
Date published: 2020-11-27

Which phosphotyrosine antibody is more sensitive in Western Blot: p-Tyr (PY99) or p-Tyr (PY20)? Which concentration is the recommended?

Asked by: AngelesMZ
Thank you for your question. Both p-Tyr Antibody (PY20): sc-508 and p-Tyr Antibody (PY99): sc-7020 are featured in several hundred publications and are recommended for western blot and other applications. Both antibodies have a recommended starting dilution of 1:200 and work in a dilution range 1:100-1:1000. Either antibody is perfectly suited for western blotting, so you could order one or the other or get in touch with our technical service to arrange for free samples of the two antibodies.
Answered by: Technical Support Europe
Date published: 2019-04-12

for blocking, what would you recommend? Many people recommend 5% of BSA for phospho-protein..( should I stick with this rule.). but some phospho-protein can worked well with.. Skim milk (depends the antibody protocol..)

Asked by: blessing
Thank you for your question. We recommend using 1% milk, 1% BSA in 0.05% Tween-20 for blocking and antibody incubations.
Answered by: Technical Support
Date published: 2019-02-01

EGF-treated とは、具体的にどのようにするものでしょうか。ご教授お願い致します。

Asked by: k 2018
Thank you for your question. Please contact our Technical Service Department and we will be happy to assist you. You may call us directly at 001 800-1338-3838, email at asia@scbio.cn, or contact us by live chat. お問い合わせを頂きまして、誠にありがとうございました。お手数ですが、電話 001 800-1338-3838、メールasia@scbio.cnまたはライブチャットで、当社のテクニカルサービスまでお問い合わせください。その他の不明点等がございましたら、またご連絡ください。
Answered by: Technical Support 8
Date published: 2018-12-21

Can I use p-Tyr Antibody (PY20): sc-508 for immunohistochemical staining of mouse tissue

Asked by: Anonymous
We recommend using a directly conjugated mouse monoclonal primary antibody. See p-Tyr (PY99): sc-7020 for p-Tyr antibody conjugates, including HRP, FITC, PE, Alexa Fluor® 488 and Alexa Fluor® 647. https://www.scbt.com/scbt/product/p-tyr-antibody-py99
Answered by: Tech Service 6
Date published: 2016-12-16

What is the recommended secondary detection reagent in Western blot?

Asked by: Anonymous
We recommend our Mouse IgG Binding Protein conjugated to HRP as a secondary detection reagent: https://www.scbt.com/scbt/product/m-igg-kappa-bp-hrp A complete list of available binding proteins is available on our website here: https://www.scbt.com/scbt/browse/support-products-mouse-igg-binding-proteins/_/N-ecrety
Answered by: Tech Service 6
Date published: 2016-12-16
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Rated 5 out of 5 by from Always reliable!I have relied on you for over 20 years and you have always delivered an excellent product on time. Your phone staff is friendly and helpful.
Date published: 2018-03-08
Rated 4 out of 5 by from Very goodI have used Py20 Antibody from Santa and it worked great.
Date published: 2017-12-14
Rated 4 out of 5 by from As expectedGives WB bands as expected at 1:500 dilution in 5% SA (block in non-fat dry milk).
Date published: 2017-12-02
Rated 5 out of 5 by from Very Strong SignalI compare different products for art antibody found p-Tyr antibody is the most sensitive, sc-508 is the most reliable quality.
Date published: 2017-10-28
Rated 5 out of 5 by from Excellent antibodyStrong signal and low background on immunoprecipitated protein.
Date published: 2017-09-01
Rated 5 out of 5 by from good result antibodyIt is an excellent antibody. gives a single band in my hand.
Date published: 2017-05-27
Rated 5 out of 5 by from antibody for WBI use the dilution 1:800, get very clean bands.I like
Date published: 2017-05-07
Rated 5 out of 5 by from High QualityGreat antibody for detection of any protein with a phosphorylated Tyrosine, can be used in a number of applications, not species specific.
Date published: 2016-12-20
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Phosphotyrosine Antibody (PY20) is rated 4.8 out of 5 by 19.
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