Date published: 2026-4-5

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Lck Antibody (3A5): sc-433

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Datasheets
  • Lck Antibody (3A5) is a mouse monoclonal IgG2b κ Lck antibody, cited in 313 publications, provided at 200 µg/ml
  • raised against amino acids 1-225 of Lck of mouse origin
  • Lck Antibody (3A5) is recommended for detection of Lck p56 of mouse, rat and human origin by WB, IP, IF, IHC(P) and FCM
  • Anti-Lck Antibody (3A5) 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-IgG2b BP-HRP and m-IgGκ BP-HRP are the preferred secondary detection reagents for Lck Antibody (3A5) for WB and IHC(P) applications. These reagents are now offered in bundles with Lck Antibody (3A5) (see ordering information below).
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Lck Antibody (3A5) is a mouse monoclonal IgG2b kappa light chain antibody that detects Lck protein of mouse, rat, and human origin by western blotting (WB), immunoprecipitation (IP), immunofluorescence (IF), immunohistochemistry, and flow cytometry (FCM). Lck (3A5) antibody is available in both non-conjugated and various conjugated forms, including agarose, horseradish peroxidase (HRP), phycoerythrin (PE), fluorescein isothiocyanate (FITC), and multiple Alexa Fluor® conjugates. Lck protein, a member of the Src family of tyrosine kinases, plays a crucial role in T cell signaling, particularly in the activation of T cell antigen receptors (TCRs). This activation is vital for the immune response, as it triggers downstream signaling pathways that lead to T cell proliferation, differentiation, and cytokine production. Lck protein is primarily localized in the plasma membrane of T cells, where it associates with the TCR complex, ensuring that it is positioned to effectively transmit signals upon receptor engagement. The human Lck gene is located on chromosome 1p35.1 and encodes a 509 amino acid protein, which is essential for the regulation of immune responses. By understanding the function and localization of Lck, researchers can better appreciate its significance in T cell biology and its potential implications in immunological disorders.

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

Lck Antibody (3A5) References:

  1. Differential T-cell antigen receptor signaling mediated by the Src family kinases Lck and Fyn.  |  Denny, MF., et al. 2000. Mol Cell Biol. 20: 1426-35. PMID: 10648627
  2. Kinases of the Src family: structure and functions.  |  Tatosyan, AG. and Mizenina, OA. 2000. Biochemistry (Mosc). 65: 49-58. PMID: 10702640
  3. Src kinase-mediated signaling in leukocytes.  |  Korade-Mirnics, Z. and Corey, SJ. 2000. J Leukoc Biol. 68: 603-13. PMID: 11073097
  4. Selected glimpses into the activation and function of Src kinase.  |  Bjorge, JD., et al. 2000. Oncogene. 19: 5620-35. PMID: 11114743
  5. SRC family kinases mediate epithelial Na+ channel inhibition by endothelin.  |  Gilmore, ES., et al. 2001. J Biol Chem. 276: 42610-7. PMID: 11560932
  6. Asparagine enhances LCK signalling to potentiate CD8+ T-cell activation and anti-tumour responses.  |  Wu, J., et al. 2021. Nat Cell Biol. 23: 75-86. PMID: 33420490
  7. LAG3 associates with TCR-CD3 complexes and suppresses signaling by driving co-receptor-Lck dissociation.  |  Guy, C., et al. 2022. Nat Immunol. 23: 757-767. PMID: 35437325
  8. LCK inhibition downregulates YAP activity and is therapeutic in patient-derived models of cholangiocarcinoma.  |  Conboy, CB., et al. 2023. J Hepatol. 78: 142-152. PMID: 36162702
  9. CD28-CAR-T cell activation through FYN kinase signaling rather than LCK enhances therapeutic performance.  |  Wu, L., et al. 2023. Cell Rep Med. 4: 100917. PMID: 36696897
  10. A partial human LCK defect causes a T cell immunodeficiency with intestinal inflammation.  |  Lui, VG., et al. 2024. J Exp Med. 221: PMID: 37962568
  11. Genetic organization of human proto-oncogenes.  |  Sakaguchi, AY. 1983. Prog Clin Biol Res. 119: 93-103. PMID: 6191340
  12. Insights into Src kinase functions: structural comparisons.  |  Williams, JC., et al. 1998. Trends Biochem Sci. 23: 179-84. PMID: 9612082

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Lck Antibody (3A5)

sc-433
200 µg/ml
$322.00

Lck Antibody (3A5): m-IgGκ BP-HRP Bundle

sc-520408
200 µg Ab, 40 µg BP
$361.00

Lck Antibody (3A5): m-IgG2b BP-HRP Bundle

sc-548825
200 µg Ab; 10 µg BP
$361.00

Lck Antibody (3A5) AC

sc-433 AC
500 µg/ml, 25% agarose
$424.00

Lck Antibody (3A5) HRP

sc-433 HRP
200 µg/ml
$322.00

Lck Antibody (3A5) FITC

sc-433 FITC
200 µg/ml
$336.00

Lck Antibody (3A5) PE

sc-433 PE
200 µg/ml
$349.00

Lck Antibody (3A5) Alexa Fluor® 488

sc-433 AF488
200 µg/ml
$364.00

Lck Antibody (3A5) Alexa Fluor® 546

sc-433 AF546
200 µg/ml
$364.00

Lck Antibody (3A5) Alexa Fluor® 594

sc-433 AF594
200 µg/ml
$364.00

Lck Antibody (3A5) Alexa Fluor® 647

sc-433 AF647
200 µg/ml
$364.00

Lck Antibody (3A5) Alexa Fluor® 680

sc-433 AF680
200 µg/ml
$364.00

Lck Antibody (3A5) Alexa Fluor® 790

sc-433 AF790
200 µg/ml
$364.00

We used the PE-conjugated anti-Lck 3A5 for FACS in Jurkat cells and barely got any signal. Could you please recommend a good permeabilization reagent (preferably the one used for obtaining the histograms shown in the product data sheet)? Thanks

Asked by: Konstantina
Thank you for your question. The data on our website was gathered using our Flow cytometry reagents (https://www.scbt.com/p/intracellular-fcm-system) and following our recommended protocol. You can find it here: https://www.scbt.com/resources/protocols/flow-cytometry
Answered by: Tech Service
Date published: 2020-01-17

I am using the LiCor/Odyssey system. Which secondary antibody do you recommend using with Lck Antibody (3A5): sc-433?

Asked by: jenni
We recommend using one of our our exclusive Mouse IgG Binding Proteins (m-IgGκ) conjugated to CFL 680 or CFL 790. They are suitable for use with Near-Infrared (NIR) detection systems, such as LI-COR/Odyssey and other comparable systems. 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: Technical Support 10
Date published: 2017-01-09
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Rated 5 out of 5 by from Ottimo anticorpoAnticorpo testato su Linfondo Reattivo. Ottimo risultato.
Date published: 2020-11-10
Rated 4 out of 5 by from Good antibodyWe have used this antobody in Jurkat cells (human, leukemic). It works well.
Date published: 2019-09-10
Rated 5 out of 5 by from Works perfectly in Western BlotI used the Lck antibody for the detection of the protein in primary CD4+ cells using Western Blot: 1/1000 dilution in TBS-T and 5% skim milk, 4°C over night incubation. HRP conjugation allowed direct detection without any secondary antibody application, clear bands were visible.
Date published: 2019-02-15
Rated 3 out of 5 by from okay for WBWorks well for Western Blot, however gives some unspecefic bands
Date published: 2018-07-10
Rated 5 out of 5 by from Specific antibody!Works very well on WB and gives a specific band for transfected and endogenous LCK
Date published: 2018-06-07
Rated 5 out of 5 by from Works great!3A5 works very well at 1:500 dilution in TBST with 5% BSA.
Date published: 2018-02-14
Rated 5 out of 5 by from greatvery sensitive and specific antibody for mouse samples
Date published: 2017-08-28
Rated 5 out of 5 by from Great antibodyI used this antibody for my WB on human samples, and it gave me strong band, the blot was so clean too!
Date published: 2017-03-30
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Lck Antibody (3A5) is rated 4.8 out of 5 by 17.
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