Product Pathways - Lymphocyte Signaling
Lck Antibody #2752
Have you tried your application using our XP® monoclonal antibodies? Try product: 2984
PhosphoSitePlus® protein, site, and accession data: Lck
| Applications | Reactivity | Sensitivity | MW (kDa) | Source |
|---|---|---|---|---|
| W | H M | Endogenous | 56 | Rabbit |
Applications Key:
W=Western Blotting
Reactivity Key:
H=Human
M=Mouse
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.
Protocols
- 2752:
- Western Blotting
Specificity / Sensitivity
Lck Antibody detects endogenous levels of total Lck protein.
Source / Purification
Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding the carboxy-terminus of human Lck. Antibodies are purified by protein A and peptide affinity chromatography.
Western Blotting
Western blot analysis of extracts from Jurkat cells (starved for 16 hours) treated with calf intestinal alkaline phosphatase (CIP) or H2O2 (2 mM), using Phospho-Lck (Tyr505) Antibody (upper) or control Lck Antibody #2752 (lower).
Background
The Src family of protein tyrosine kinases, which includes Src, Lyn, Fyn, Yes, Lck, Blk, and Hck, are important in the regulation of growth and differentiation of eukaryotic cells (1). Src activity is regulated by tyrosine phosphorylation at two sites, but with opposing effects. While phosphorylation at Tyr416 in the activation loop of the kinase domain upregulates enzyme activity, phosphorylation at Tyr527 in the carboxy-terminal tail by Csk renders the enzyme less active (2).
Lck is essential for T-lymphocyte activation and differentiation (3,4). Phosphorylation of Tyr505 in the carboxy-terminal tail of Lck downregulates its catalytic activity, while phosphorylation of Tyr394 leads to an increase in Lck activity (5).
- Thomas, S.M. and Brugge, J.S. (1997) Annu. Rev. Cell Dev. Biol. 13, 513-609.
- Hunter, T. (1987) Cell 49, 1-4.
- Molina, T. J. et al. (1992) Nature 357, 161-164.
- Straus, D. B. et al. (1992) Cell 70, 585-593.
- Chow, L. M. et al. (1993) Nature 365, 156-160.
Application References
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Companion Products
- 2101 Phospho-Src Family (Tyr416) Antibody
- 2102 Non-phospho-Src (Tyr416) (7G9) Mouse mAb
- 2751 Phospho-Lck (Tyr505) Antibody
- 7071 Phototope®-HRP Western Blot Detection System, Anti-rabbit IgG, HRP-linked Antibody
- 7074 Anti-rabbit IgG, HRP-linked Antibody
- 7720 Prestained Protein Marker, Broad Range (Premixed Format)
- 7727 Biotinylated Protein Ladder Detection Pack
- 7003 20X LumiGLO® Reagent and 20X Peroxide
This product is intended for research purposes only. The product is not intended to be used for therapeutic or diagnostic purposes in humans or animals.
