Deletion or substitution of a putative NF-kappaB binding site identified in the bcl-x promoter significantly decreased Tax -induced transactivation .
deletion or substitution of a putative nf-kappab binding site identified in the bcl-x promoter significantly decreased tax -induced transactivation .
O O O O O B-protein_domain_or_region B-protein_complex O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O O B-protein_molecule O O O