tokens: Since the co-expression with a dominant negative c-Fos abolished the responsiveness to TPA , we conclude that activated transcription of the DRA gene depends on interactions between the X2 box and NF-X2 , which contains c-Fos .
folded_tokens: since the co-expression with a dominant negative c-fos abolished the responsiveness to tpa , we conclude that activated transcription of the dra gene depends on interactions between the x2 box and nf-x2 , which contains c-fos .
labels: O O O O O O O B-protein_molecule O O O O B-other_organic_compound O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O B-DNA_domain_or_region O O O B-protein_molecule O