The insertion of multiple copies of the binding site for the former or latter factor into a heterologous promoter reduced the promoter activity to one-tenth or one-third , respectively .
the insertion of multiple copies of the binding site for the former or latter factor into a heterologous promoter reduced the promoter activity to one-tenth or one-third , respectively .
O O O O 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 O O B-other_name I-other_name O O O O O O O