title: Characterization of the C-terminal region of a Trypanosoma cruzi 38-kDa ribosomal P0 protein that does not react with lupus anti-P autoantibodies.
abstract: A Trypanosoma cruzi cDNA lambda gt11 recombinant, C-P0, encoding the carboxyterminus of a highly antigenic ribosomal P protein, was isolated. Sequence comparisons and immunological evidence allowed its identification as the C-terminal region of the T. cruzi 38-kDa ribosomal P0 protein. This recombinant failed to react with systemic lupus erythematosus (SLE) anti-P antibodies. The T. cruzi ribosomal P0 protein is the first reported eukaryotic ribosomal P protein presenting this immunological property, probably due to its peculiar C-terminal-amino-acid sequence, FGMGALF, which differs from the conserved eukaryotic ribosomal P protein C-terminal consensus, MGFGLFD.
authors.affiliation: Instituto de Investigaciones en Ingeniería Genética y Biologia Molecular, Buenos Aires, Argentina.
authors.forename: A G
authors.initials: AG
authors.lastname: Schijman
authors.forename: G
authors.initials: G
authors.lastname: Levitus
authors.forename: M J
authors.initials: MJ
authors.lastname: Levin
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001323:Autoantibodies / Q000276:immunology*; D001483:Base Sequence; D004247:DNA / Q000235:genetics; D000939:Epitopes / Q000276:immunology; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000276:immunology; D008969:Molecular Sequence Data; D010446:Peptide Fragments / Q000276:immunology; D010750:Phosphoproteins / Q000235:genetics* / Q000276:immunology; D015800:Protozoan Proteins / Q000235:genetics* / Q000276:immunology; D011993:Recombinant Fusion Proteins / Q000276:immunology; D012269:Ribosomal Proteins; D014349:Trypanosoma cruzi / Q000235:genetics* / Q000276:immunology
chemical_list: D001323:Autoantibodies; D000939:Epitopes; D010446:Peptide Fragments; D010750:Phosphoproteins; D015800:Protozoan Proteins; D011993:Recombinant Fusion Proteins; D012269:Ribosomal Proteins; C054675:ribosomal protein P0; D004247:DNA