GST-fusion protein containing the 2 tandem SH2 domains of human ZAP-70. corresponding to aa1-254.
ZAP-70 is a cytosolic protein tyrosine kinase that is a member of the Syk family of proteins. ZAP-70 is expressed exclusively in T cells and natural killer cells and is required for T cell receptor activation, which triggers an immune response. ZAP-70 is