label: RAS guanyl-nucleotide exchange mediated by SOS1 in complex with GRB2 and phosphorylated EGFR:ERBB2 heterodimers (Homo sapiens)
label_lc: ras guanyl-nucleotide exchange mediated by sos1 in complex with grb2 and phosphorylated egfr:erbb2 heterodimers (homo sapiens)