A new protein-DNA interaction has been identified upstream of the intron enhancer , within the matrix-associated region of the J-C intron .
a new protein-dna interaction has been identified upstream of the intron enhancer , within the matrix-associated region of the j-c intron .
O O B-other_name I-other_name O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O O O B-DNA_domain_or_region I-DNA_domain_or_region O O B-DNA_domain_or_region I-DNA_domain_or_region O