Tax corresponds to a 40-kDa transforming protein from the pathogenic retrovirus human T-cell leukemia virus type 1 ( HTLV-1 ) that activates nuclear expression of the NF-kappaB /Rel family of transcription factors by an unknown mechanism .
tax corresponds to a 40-kda transforming protein from the pathogenic retrovirus human t-cell leukemia virus type 1 ( htlv-1 ) that activates nuclear expression of the nf-kappab /rel family of transcription factors by an unknown mechanism .
B-protein_molecule O O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O O O O B-virus I-virus I-virus I-virus I-virus I-virus O B-virus O O O O O O O B-protein_complex O O O B-protein_family_or_group I-protein_family_or_group O O B-other_name I-other_name O