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.
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Protein Aliases: abundant SRC homology; Adapter protein GRB2; ASH protein; epidermal growth factor receptor-binding protein GRB2; Growth factor receptor-bound protein 2; growth factor receptor-bound protein 3; HT027; OTTHUMP00000166097; OTTHUMP00000166098; Protein Ash; SH2/SH3 adapter GRB2
Gene Aliases: AA408164; ASH; EGFRBP-GRB2; GRB2; Grb3-3; MST084; MSTP084; NCKAP2