One , located at -50 , binds members of the CCACC/Sp1 family and the other , located at -20 , binds the erythroid factor GATA-1 .
one , located at -50 , binds members of the ccacc/sp1 family and the other , located at -20 , binds the erythroid factor gata-1 .
O O O O O O O O O O B-protein_family_or_group I-protein_family_or_group O O O O O O O O O O B-protein_molecule I-protein_molecule I-protein_molecule O