Activation of the enhancer in non- B cells upon overexpression of the basic helix-loop-helix ( bHLH ) protein E2A appears to be mediated not only by the binding of E2A to its cognate E box but also by the resulting displacement of a repressor from that same site .
activation of the enhancer in non- b cells upon overexpression of the basic helix-loop-helix ( bhlh ) protein e2a appears to be mediated not only by the binding of e2a to its cognate e box but also by the resulting displacement of a repressor from that same site .
O O O B-DNA_domain_or_region O B-cell_type B-cell_type I-cell_type O O O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group B-protein_molecule O O O O O O O O O O B-protein_molecule O O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O O O O B-protein_family_or_group O O O O O