We molecularly cloned a new Grb2 family member , named Grf40 , containing the common SH3-SH2-SH3 motif .
we molecularly cloned a new grb2 family member , named grf40 , containing the common sh3-sh2-sh3 motif .
O O O O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O O B-protein_molecule O O O O B-protein_substructure I-protein_substructure O