title: Determination of a splice acceptor site of pX gene in HTLV-I infected cells.
abstract: The splice acceptor site of pX gene of HTLV-I has been determined to be at base position 7301 using S1 nuclease protection analysis. This splice acceptor site is used in all HTLV-I immortalized T-cell clones studied despite variation in the abundance levels of pX mRNA. Our results confirmed the proposal by Haseltine et al. (W. A. Haseltine, J. Sodroski, R. Patarca, D. Briggs, D. Perkins, and F. Wong-Staal, Science (Washington, D. C. 225, 421-424 (1984); K. Shimotono, W. Wachsman, Y. Takahashi, D. W. Golde, M. Miwa, T. Sigimura, and I. S. Y. Chen, Proc. Natl. Acad. Sci. USA 81, 6657-6661 (1984)) that a pX protein with a molecular weight of at least 38,000 could be synthesized. Generation of a 2.0-kb pX mRNA may involve a double-splicing event.
mesh_terms: D001483:Base Sequence; D002460:Cell Line; D002471:Cell Transformation, Neoplastic; D004262:DNA Restriction Enzymes; D017977:Deltaretrovirus / Q000235:genetics*; D004720:Endonucleases; D005814:Genes, Viral; D006801:Humans; D012326:RNA Splicing; D012333:RNA, Messenger / Q000235:genetics; D015719:Single-Strand Specific DNA and RNA Endonucleases; D013601:T-Lymphocytes
chemical_list: D012333:RNA, Messenger; D004720:Endonucleases; D004262:DNA Restriction Enzymes; D015719:Single-Strand Specific DNA and RNA Endonucleases