Human T cell lymphotropic virus type I ( HTLV-I ) encodes the transactivator protein , Tax , which facilitates viral transcription from three 21 bp repeated elements within the U3 region of the long terminal repeat ( LTR ) .
human t cell lymphotropic virus type i ( htlv-i ) encodes the transactivator protein , tax , which facilitates viral transcription from three 21 bp repeated elements within the u3 region of the long terminal repeat ( ltr ) .
B-virus I-virus I-virus I-virus I-virus I-virus I-virus O B-virus O O O B-protein_family_or_group I-protein_family_or_group O B-protein_molecule O O O B-other_name I-other_name O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O B-DNA_domain_or_region I-DNA_domain_or_region 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