AVOID FREEZE/THAW CYCLES. Has been validated for use as a positive control for protein tyrosine kinase (PTK) activity assays. There is sufficient PTK activity at a concentration of 10-20 ng/well using the K-LISA™ PTK Screening Kit (Cat. No. 539701). Ref.: Elberg, G. et al., 1995. Biochim. Biophys. Acta. 1269, 299. Swarup, G. et al. 1983. J. Biol. Chem. 258, 10341. |