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Mouse Monoclonal to LAT

LAT-01 (IgG1)

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LAT (Linker for Activation of T cells) is a 36-38 kDa double-palmitoylated transmembrane adaptor protein expressed by T cells, pre-B cells, NK cells, mast cells and platelets. After immunoreceptor triggering, LAT becomes multiply tyrosine-phosphorylated by Syk-, Src-, or Tec-family kinases, providing docking sites for downstream signaling molecules. LAT is essential for TCR-dependent T cell- and FcepsilonRI-dependent mast cell activation, as well as for maturation of early thymocytes. It is also involved in NK cell signaling and platelet activation.


The antibody LAT-01 reacts with Linker for activation of T cells (LAT), a 36-38 kDa transmembrane adaptor protein expressed by T cells, pre-B cells, NK cells, mast cells and platelets.

Regulatory Status


Bacterially produced recombinant polypeptide corresponding to the entire cytoplasmic domain of human LAT.

Species Reactivity:

  • Human

Negative Species:

  • Mouse
  • Other not tested


  • Western Blotting
  • Immunoprecipitation
    Application note: Tyrosine-phosphorylated form of LAT is not optimally recognized.
  • Flow Cytometry
Usage note:
Indicated dilutions are recommended starting points for use of this product. Working concentrations should be determined by the investigator.

General references

  • *Horejsí V, Zhang W, Schraven B.: Transmembrane adaptor proteins: organizers of immunoreceptor signalling. Nat Rev Immunol. 2004 Aug;4(8):603-16. [Abstract]
  • *Simeoni L, Smida M, Posevitz V, Schraven B, Lindquist JA.: Right time, right place: the organization of membrane proximal signaling. Semin Immunol. 2005 Feb;17(1):35-49. [Abstract]
  • *Yamasaki S, Ishikawa E, Sakuma M, Kanagawa O, Cheng AM, Malissen B, Saito T.: LAT and NTAL mediate immunoglobulin E-induced sustained extracellular signal-regulated kinase activation critical for mast cell survival. Mol Cell Biol. 2007 Jun;27(12):4406-15. [Abstract] [Full Text]
  • Product Specific References

  • *Tedoldi S, Paterson JC, Hansmann ML, Natkunam Y, Rudiger T, Angelisova P, Du MQ, Roberton H, Roncador G, Sanchez L, Pozzobon M, Masir N, Barry R, Pileri S, Mason DY, Marafioti T, Horejsi V.: Transmembrane adaptor molecules: a new category of lymphoid-cell markers. Blood. 2006 Jan 1;107(1):213-21. [Abstract] [Full Text]
  • *Hrdinka M, Dráber P, Stepánek O, Ormsby T, Otáhal P, Angelisová P, Brdicka T, Paces J, Horejsí V, Drbal K: PRR7 is a transmembrane adaptor protein expressed in activated T cells involved in regulation of T cell receptor signaling and apoptosis. J Biol Chem. 2011 Jun 3;286(22):19617-29. [Abstract] [Full Text]
  • For research use only. Not for drug, diagnostic or other use.

    Related Products

  • Mouse IgG1 Isotype Control
  • Example Data

    Fig. 1. Flow Cytometry analysis

    Fig. 1. Flow Cytometry analysis of LAT expression in peripheral blood lymphocytes using anti-human LAT (LAT-01) (surface markers were stained prior to intracellular staining of human LAT).
    Panel A: gate on CD4+ cells
    Panel B: gate on CD8+ cells

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