tokens: Site-directed mutagenesis further demonstrated that the enhancer function of one of the two NF-E2/AP1 motifs of HS-40 is mediated through its binding to NF-E2 but not AP1 transcription factor .
folded_tokens: site-directed mutagenesis further demonstrated that the enhancer function of one of the two nf-e2/ap1 motifs of hs-40 is mediated through its binding to nf-e2 but not ap1 transcription factor .
labels: B-other_name I-other_name O O O O B-DNA_domain_or_region O O O O O O O O O B-DNA_domain_or_region O O O O O O B-protein_molecule O O B-protein_molecule I-protein_molecule I-protein_molecule O