tokens: Within this region , we define a minimal promoter ( -62 to +54 ) that displays erythroid-specific activity and contains two DNA binding sites .
folded_tokens: within this region , we define a minimal promoter ( -62 to +54 ) that displays erythroid-specific activity and contains two dna binding sites .
labels: O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O O O B-other_name I-other_name O O O O O O O