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GRB 2 protein contains one SH2 domain flanked on both sides by an SH3 domain. In response to EGF, GRB 2 binds, through its SH3 domains, to the guanine nucleotide exchange factor, Sos. The GRB 2-Sos complex then binds the EGF receptor. These interactions play a critical role in the activation of the p21 ras signaling pathway.
AA408164; abundant SRC homology; adapter protein GRB2; Adapter protein GRB2-A; ASH; ASH protein; EGFRBP-GRB2; epidermal growth factor receptor-binding protein GRB2; grb2; grb2.L; grb2-a; grb2-b; Grb3-3; growth factor receptor bound protein 2; growth factor receptor bound protein 2 L homeolog; growth factor receptor-bound protein 2; Growth factor receptor-bound protein 2-A; growth factor receptor-bound protein 3; HT027; hypothetical protein LOC535298; MST084; MSTP084; NCKAP2; OTTHUMP00000166097; OTTHUMP00000166098; protein Ash; SH2/SH3 adapter GRB2; SH2/SH3 adapter GRB2-A; SH2/SH3 adaptor Grb2; XELAEV_18044055mg
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