The enhancer consists of tandem AP-1-binding sites , phased 10 bp apart , which are both required for full activity .
the enhancer consists of tandem ap-1-binding sites , phased 10 bp apart , which are both required for full activity .
O B-DNA_family_or_group O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O B-polynucleotide I-polynucleotide O O O O O O O O O O