The two proteins interact with one another through their putative helix-loop-helix motifs and each possesses a distinct domain that dictates transcription activation .
the two proteins interact with one another through their putative helix-loop-helix motifs and each possesses a distinct domain that dictates transcription activation .
O O O O O O O O O O B-protein_substructure I-protein_substructure O O O O O O O O B-other_name I-other_name O