Leukocyte tyrosine kinase (LTK) is a receptor-type protein tyrosine kinase, belonging to the insulin receptor superfamily, and is mainly expressed in B lymphocyte precursors and neuronal tissues. LTK utilizes insulin receptor substrate-1 (IRS-1) and Shc as major two substrates and possesses two NPXY motifs for them separately, tyrosine 485 of one NPXY motif at the juxtamembrane domain for IRS-1 and tyrosine 862 of another NPXY motif at the carboxyl-terminal domain for Shc. It has also been shown that p85 subunit of PI3 kinase directly binds to tyrosine 753 of LTK, which is located within a YXXM motif. Tyrosine 485 and 753 are responsible for IRS-1 and PI3K mediated survival effects of LTK, respectively.
LTK antibody can be used in ELISA, Western Blot, immunohistochemistry starting at 5 μg/mL, and immunofluorescence starting at 10 μg/mL.
Protein G Column
PBS, 0.2% gelatin, 0.05% sodium azide.
Aliquot and store at -20°C or below. Avoid multiple freeze-thaw cycles.