The second enhancer interacts with two nuclear binding proteins ( 85 kD and 27 kD mobility ) that appear to be required for optimal enhancer function and activation .
the second enhancer interacts with two nuclear binding proteins ( 85 kd and 27 kd mobility ) that appear to be required for optimal enhancer function and activation .
O O B-DNA_domain_or_region O O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O O O O O O O O O O O O O O O B-other_name I-other_name O O O