5' deletion constructs which lacked the Y box , but retained the "octamer" motif and TATA box were completely inactive , and internal deletion of the Y box reduced transcription by 95% .
5' deletion constructs which lacked the y box , but retained the "octamer" motif and tata box were completely inactive , and internal deletion of the y box reduced transcription by 95% .
O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O B-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 O O O O B-DNA_domain_or_region I-DNA_domain_or_region O B-other_name O O O