However , there is an EB1 -binding site ( ZRE-B ) located within the R-responsive enhancer region .
however , there is an eb1 -binding site ( zre-b ) located within the r-responsive enhancer region .
O O O O O B-protein_molecule O O O B-DNA_domain_or_region O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O