The activity of the enhancer is almost completely dependent on the integrity of a dimeric GATA-1 binding site .
the activity of the enhancer is almost completely dependent on the integrity of a dimeric gata-1 binding site .
O O O O O O O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O