Analyzed DNA sequences included delta and beta 5' flanking regions extending from approximately -500 to +50bp ( promoter regions ) , truncated delta and beta 5' flanking regions extending from approximately -250 to +50 bp , and chimeric promoter constructions , which consisted of a distal delta or beta fragment fused to a proximal beta or delta sequence .
analyzed dna sequences included delta and beta 5' flanking regions extending from approximately -500 to +50bp ( promoter regions ) , truncated delta and beta 5' flanking regions extending from approximately -250 to +50 bp , and chimeric promoter constructions , which consisted of a distal delta or beta fragment fused to a proximal beta or delta sequence .
O B-DNA_domain_or_region I-DNA_domain_or_region 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 O B-DNA_domain_or_region I-DNA_domain_or_region 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 O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O B-DNA_family_or_group I-DNA_family_or_group I-DNA_family_or_group O O O O O O O O O O O O O O O O O O O