tokens: YY1 , a widely distributed human transcription factor , is known to inhibit HIV-1 long terminal repeat ( LTR ) transcription and virus production .
folded_tokens: yy1 , a widely distributed human transcription factor , is known to inhibit hiv-1 long terminal repeat ( ltr ) transcription and virus production .
labels: B-protein_molecule O O O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O O O O O B-virus O O O O B-DNA_domain_or_region O O O B-other_name I-other_name O