Activity of the CBF site is shown to be critically dependent on the adjacent activator site Act-1 .
activity of the cbf site is shown to be critically dependent on the adjacent activator site act-1 .
O O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region B-DNA_domain_or_region O