NCIt definition : Fibroblast growth factor receptor substrate 3 (492 aa, 54 kDa) is encoded by the
human FRS3 gene. This protein plays a role in linking fibroblast growth factor receptors
and nerve growth factor receptors to downstream signaling factors.;
NCIt note : FRS3 contains a myristylation sequence, a PTB domain, and Tyr-containing motifs that
govern GRB2 and SHP2 recruitment. FRS3 binds directly to FGFR1; an FGFR1 juxtamembrane
segment and the PTB domain appear to interact and mediate FRS Tyr phosphorylation.;