The purified homodimer ( two p50s ) of the DNA-binding subunit of NF-kappa B binds the B2 site of proenkephalin relatively better than does the heterotetramer ( two p65s plus two p50s ) form of the factor .
the purified homodimer ( two p50s ) of the dna-binding subunit of nf-kappa b binds the b2 site of proenkephalin relatively better than does the heterotetramer ( two p65s plus two p50s ) form of the factor .
O O B-protein_complex O O B-protein_subunit O O O B-protein_domain_or_region I-protein_domain_or_region O B-protein_molecule I-protein_molecule O O B-DNA_domain_or_region O O B-peptide O O O O O B-protein_complex O O B-protein_subunit O O B-protein_subunit O O O O O O