Composite elements are regulatory modules of promoters or enhancers that consist of binding sites of two different but synergizing transcription factors .
composite elements are regulatory modules of promoters or enhancers that consist of binding sites of two different but synergizing transcription factors .
B-DNA_family_or_group I-DNA_family_or_group O B-DNA_family_or_group I-DNA_family_or_group O B-DNA_family_or_group O B-DNA_family_or_group O O O O O O O O O O B-protein_family_or_group I-protein_family_or_group O