MeSH definition : A 145-kDa guanine nucleotide exchange factor that is specific for rap1 and ras GTP-BINDING
PROTEINS. It associates with SH3 domains of the crk family of signaling proteins.;
A 145-kDa guanine nucleotide exchange factor that is specific for rap1 and ras GTP-BINDING
PROTEINS. It associates with SH3 domains of the crk family of signaling proteins.