The native peptide RRLIEDAEYAARG (22581) is derived from pp60src, and considered to be a generic substrate for various protein tyrosine kinases. The fluorescent and biotinylated peptides are used to design a variety of assays for PTKs.
Ref: Normanno, N. et al. J. Cell Physiol. 194, 13 (2003); Lee, AV. et al. Clin. Cancer Res. 9, 516S (2003); Lam, KS. et al. Int. J. Pept. Protein Res. 45, 587 (1995).