There is a suitably located TATA box , but potential sites for CCAAT-box binding factors are far upstream , embedded in a 42-nucleotide repeat element .
there is a suitably located tata box , but potential sites for ccaat-box binding factors are far upstream , embedded in a 42-nucleotide repeat element .
O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O B-DNA_domain_or_region O O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O