DNase I mapping of genomic DNA identified a hypersensitive element near the transcription initiation site .
dnase i mapping of genomic dna identified a hypersensitive element near the transcription initiation site .
B-protein_molecule I-protein_molecule O O B-DNA_family_or_group I-DNA_family_or_group O O B-DNA_domain_or_region I-DNA_domain_or_region O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O