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LAT Antibody

Rabbit Monoclonal Antibody

     
  • WB - LAT Antibody AJ1434a
    A. Western blot analysis on Jurkat cell lysate using anti-LAT RabMAb (Cat. #AJ1434a), dilution 1:500
  • IHC - LAT Antibody AJ1434a
    B. Immunohistochemical analysis of paraffin-embedded human lymph node using anti-LAT RabMAb (Cat. #AJ1434a).
  • SPECIFICATION
  • CITATIONS
  • PROTOCOLS
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Product Information
Application
  • Applications Legend:
  • WB=Western Blot
  • IHC=Immunohistochemistry
  • IHC-P=Immunohistochemistry (Paraffin-embedded Sections)
  • IHC-F=Immunohistochemistry (Frozen Sections)
  • IF=Immunofluorescence
  • FC=Flow Cytopmetry
  • IC=Immunochemistry
  • ICC=Immunocytochemistry
  • E=ELISA
  • IP=Immunoprecipitation
  • DB=Dot Blot
  • CHIP=Chromatin Immunoprecipitation
  • FA=Fluorescence Assay
  • IEM=Immunoelectronmicroscopy
  • EIA=Enzyme Immunoassay
WB, IHC
Primary Accession O43561
Reactivity Human
Host Rabbit
Clonality Monoclonal
Clone Names Y109
Calculated MW 27930 Da
Gene ID 27040
Other Names Linker for activation of T-cells family member 1, 36 kDa phospho-tyrosine adapter protein, pp36, p36-38, LAT
Target/Specificity A synthetic peptide corresponding to residues surrounding GRB2-binding motif 2 of human LAT was used as immunogen. This antibody detects both long and short forms of LAT.
Dilution WB~~1:500
IHC~~1:100
Format 50 mM Tris-Glycine (pH 7.4), 0.15 M NaCl, 40% Glycerol, 0.01% sodium azide and 0.05% BSA.
StorageMaintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.
PrecautionsLAT Antibody is for research use only and not for use in diagnostic or therapeutic procedures.
Protein Information
Name LAT
Function Required for TCR (T-cell antigen receptor)- and pre-TCR- mediated signaling, both in mature T-cells and during their development. Involved in FCGR3 (low affinity immunoglobulin gamma Fc region receptor III)-mediated signaling in natural killer cells and FCER1 (high affinity immunoglobulin epsilon receptor)-mediated signaling in mast cells. Couples activation of these receptors and their associated kinases with distal intracellular events such as mobilization of intracellular calcium stores, PKC activation, MAPK activation or cytoskeletal reorganization through the recruitment of PLCG1, GRB2, GRAP2, and other signaling molecules.
Cellular Location Cell membrane; Single-pass type III membrane protein Note=Present in lipid rafts
Tissue Location Expressed in thymus, T-cells, NK cells, mast cells and, at lower levels, in spleen. Present in T-cells but not B-cells (at protein level).
Research Areas
Citations (0)

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Background

LAT (linker for activation of T-cells) is involved in the T-cell antigen receptor (TCR) signal transduction pathway, and may play an important role downstream in activating protein tyrosine kinases (1). LAT is phosphorylated by ZAP-70/Syk protein tyrosine kinases leading to recruitment of multiple signaling molecules (2). It has been found that Tyr191 and Tyr171 are required for T-cell activation and Tyr132 is required for the activation of PLCgamma1 and Ras signaling pathways, respectively. Tyr226 and Tyr191 are required for Vav binding, whereas Tyr171 and Tyr132 are necessary for association and activation of phosphoinositide 3-kinase activity and PLCgamma1 (3).

References

1. Weber, J.R., et al. Molecular cloning of the cDNA encoding pp36, a tyrosine-phosphorylated adaptor protein selectively expressed by T cells and natural killer cells. J Exp Med. 187: 1157
2. Zhang, W., et al. LAT: the ZAP-70 tyrosine kinase substrate that links T cell receptor to cellular activation. Cell 92: 83
3. Paz, P.E., et al. Mapping the Zap-70 phosphorylation sites on LAT (linker for activation of T cells) required for recruitment and activation of signalling proteins in T cells. Biochem J. 356(Pt 2): 461-71 (2001).

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Discontinued
Cat# AJ1434a
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