title: Genomic expressions of human T-lymphotropic virus (HTLV-I).
abstract: Human T-lymphocyte cell line termed MT-2 is producing persistently HTLV-I virion and has a strong potential to transform human T-lymphocytes when cocultivated. The virion of HTLV-I (MT-2) was isolated and its RNA was extracted to analyze the gene and gene products of HTLV-I. HTLV (MT-2) virion RNA was translated in a rabbit reticulocyte lysate system in vitro in which a gag precursor polyprotein (p53) and a putative gag-prt fusion protein (p76) were synthesized from a full length 35S RNA. The full length provirus, HTLV-I (MT-2), was molecularly cloned and its genomic expression was examined transiently and permanently by transfecting in human lymphoid and non-lymphoid cells. The cloned provirus expressed the same virological activities as observed in naturally occurring infection of the virus. A new protease gene of HTLV-I was found and its function of the gene product was studied.
mesh_terms: D000818:Animals; D002460:Cell Line; D002474:Cell-Free System; D003001:Cloning, Molecular; D017977:Deltaretrovirus / Q000235:genetics*; D005786:Gene Expression Regulation; D005796:Genes; D005814:Genes, Viral; D006367:HeLa Cells; D006801:Humans; D012367:RNA, Viral / Q000235:genetics; D011817:Rabbits; D013601:T-Lymphocytes; D014764:Viral Proteins / Q000096:biosynthesis / Q000235:genetics; D014771:Virion / Q000032:analysis
chemical_list: D012367:RNA, Viral; D014764:Viral Proteins