tokens: Mutational analysis showed that optimal transcriptional activity required the GATA sequence at position -24 , and gel-shift assays further showed that the GATA-2 transcription factor , but not GATA-1 , bound to this region of the PECAM-1 promoter .
folded_tokens: mutational analysis showed that optimal transcriptional activity required the gata sequence at position -24 , and gel-shift assays further showed that the gata-2 transcription factor , but not gata-1 , bound to this region of the pecam-1 promoter .
labels: O O O O O B-other_name I-other_name O O B-DNA_domain_or_region I-DNA_domain_or_region O O B-DNA_domain_or_region O O O O O O O O B-protein_molecule O O O O O B-protein_molecule O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O