In vertebrates , five distinct DNA binding subunits are currently known which might extensively heterodimerize , thereby forming complexes with distinct transcriptional activity , DNA sequence specificity , and cell type- and cell stage-specific distribution .
in vertebrates , five distinct dna binding subunits are currently known which might extensively heterodimerize , thereby forming complexes with distinct transcriptional activity , dna sequence specificity , and cell type- and cell stage-specific distribution .
O O O O O B-protein_subunit I-protein_subunit I-protein_subunit O O O O O O O O O O O O O O O O O O O O O O O O O O O O