Document 0406 DOCN M9620406 TI A single retroviral gag precursor signal peptide recognized by FBL-3 tumor-specific cytotoxic T lymphocytes. DT 9602 AU Kondo T; Uenishi H; Shimizu T; Hirama T; Iwashiro M; Kuribayashi K; Tamamura H; Fujii N; Fujisawa R; Miyazawa M; et al; Department of Biophysics, Faculty of Science, Kyoto University,; Japan. SO J Virol. 1995 Nov;69(11):6735-41. Unique Identifier : AIDSLINE GENBANK/D45226 AB Several dominant T-cell receptors of cytotoxic T-lymphocyte (CTL) clones specific for FBL-3 tumor antigen were clonally amplified in mixed lymphocyte tumor cell cultures derived from an individual immune mouse. Every CTL clone analyzed had a common specificity for a single epitope in the precursor to cell membrane-associated nonstructural gag-encoded protein, Pr75gag, which can be minimally identified by nine amino acid residues, SIVLCCLCL. This epitope is located within the hydrophobic signal sequence motif that mediates translocation of the protein into the endoplasmic reticulum. These novel observations suggest that expression of Pr75gag in FBL-3 tumor cells led to the amplification of CTLs which recognize the signal sequence of the nonstructural gag-encoded glycoprotein precursor. DE Amino Acid Sequence Animal Base Sequence Clone Cells Cloning, Molecular DNA Primers Endoplasmic Reticulum/IMMUNOLOGY/METABOLISM Friend Virus/GENETICS/*IMMUNOLOGY Gene Products, gag/BIOSYNTHESIS/*IMMUNOLOGY Genes, gag Leukemia, Erythroblastic, Acute/IMMUNOLOGY Mice Mice, Inbred Strains Molecular Sequence Data Polymerase Chain Reaction Protein Precursors/IMMUNOLOGY Receptors, Antigen, T-Cell, alpha-beta/*BIOSYNTHESIS/*IMMUNOLOGY Recombinant Proteins/BIOSYNTHESIS/IMMUNOLOGY Signal Peptides/*IMMUNOLOGY Support, Non-U.S. Gov't T-Lymphocytes, Cytotoxic/*IMMUNOLOGY/*VIROLOGY JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).