tokens: The interaction of purified octamer transcription factors 1 and 2 ( OTF1 and OTF2 ) with the MOPC 141 promoter was studied by using electrophoretic mobility shift assays and DNase I footprinting .
folded_tokens: the interaction of purified octamer transcription factors 1 and 2 ( otf1 and otf2 ) with the mopc 141 promoter was studied by using electrophoretic mobility shift assays and dnase i footprinting .
labels: O O O O B-protein_family_or_group B-protein_family_or_group I-protein_family_or_group O O O O B-protein_molecule O B-protein_molecule O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O O O B-other_name I-other_name I-other_name I-other_name O B-protein_molecule I-protein_molecule O O