... conformation, the SH2 domain binds to pYion the C-terminal tail, and the Src homology 3 (SH3) domain binds to the linkerbetween the SH2 and kinase domains at the back of the small lobe, preventing the ... in (B) show the time point of step changes in [RPTP]. The corresponding [RPTP] values, 117.5, 126.5 and 135.5 nM, are indi-cated by dashed lines 1–3 in (A) and shown by upper line in (B). The ... first brings aboutexcitable Src behavior and then, when [RPTP] passes the turning point (marked bold), lands the system into the oscillatory domain, whereas, with a furtherincrease in the stimulus,...