The octamer sequence ATGCAAAT is present in the promoter and the enhancer of Ig genes , and plays an important role in its tissue-specific expression .
the octamer sequence atgcaaat is present in the promoter and the enhancer of ig genes , and plays an important role in its tissue-specific expression .
O B-DNA_domain_or_region I-DNA_domain_or_region B-polynucleotide O O O O B-DNA_domain_or_region O O B-DNA_domain_or_region O B-DNA_family_or_group I-DNA_family_or_group O O O O O O O O B-other_name I-other_name O