FRS3 (also known as FRS2 beta) is activated through tyrosine phosphorylation catalyzed by the protein kinase domain of the activated FGFR. By sequence comparison, FRS3 has the 2 PPTN11/SHP2-binding sites and has three of the four GRB2-binding sites.
Kouhara, H, Hadari, YR, Spivak-Kroizman, T, Schilling, J, Bar-Sagi, D, Lax, I, Schlessinger, J
Lax, I, Wong, A, Lamothe, B, Lee, A, Frost, A, Hawes, J, Schlessinger, J
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