The microA motif was required for microB-dependent enhancer activity , which suggests that a minimal B cell-specific enhancer is composed of both the PU . 1 and Ets-1 binding sites .
the microa motif was required for microb-dependent enhancer activity , which suggests that a minimal b cell-specific enhancer is composed of both the pu . 1 and ets-1 binding sites .
O B-DNA_domain_or_region O O O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O O O O B-protein_molecule I-protein_molecule I-protein_molecule O B-protein_molecule O O O