tokens: Human immunodeficiency virus type 1 ( HIV-1 ) Tat , an early regulatory protein that is critical for viral gene expression and replication , transactivates the HIV-1 long terminal repeat ( LTR ) via its binding to the transactivation response element ( TAR ) and , along with other cellular factors , increases viral transcription initiation and elongation .
folded_tokens: human immunodeficiency virus type 1 ( hiv-1 ) tat , an early regulatory protein that is critical for viral gene expression and replication , transactivates the hiv-1 long terminal repeat ( ltr ) via its binding to the transactivation response element ( tar ) and , along with other cellular factors , increases viral transcription initiation and elongation .
labels: B-virus I-virus I-virus I-virus I-virus O O O O O O O B-protein_family_or_group I-protein_family_or_group O O O O O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O B-DNA_domain_or_region O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O B-DNA_domain_or_region O O O O O O O O O O O O O O O O