The observation that binding sites for the nuclear factor-mu negative regulator ( NF-muNR ) enhancer repressor overlap nuclear matrix attachment regions ( MARs ) in this enhancer has lead to the hypothesis that the cell type specificity of the enhancer might be controlled by regulating nuclear matrix attachment ( Scheuermann , R . H . , and Chen , U . ( 1989 ) Genes & Dev . 3 , 1255-1266 ) .
the observation that binding sites for the nuclear factor-mu negative regulator ( nf-munr ) enhancer repressor overlap nuclear matrix attachment regions ( mars ) in this enhancer has lead to the hypothesis that the cell type specificity of the enhancer might be controlled by regulating nuclear matrix attachment ( scheuermann , r . h . , and chen , u . ( 1989 ) genes & dev . 3 , 1255-1266 ) .
O O O O O O O B-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule O B-protein_molecule O O O O B-protein_domain_or_region I-protein_domain_or_region I-protein_domain_or_region I-protein_domain_or_region O B-protein_domain_or_region O O O B-DNA_domain_or_region O O O O O O O O O O O O B-DNA_domain_or_region O O O O O B-other_name I-other_name I-other_name O O O O O O O O O O O O O O O O O O O O O O O O O