title: Isolation of rat cDNA clones coding for the autoantigen SS-B/La: detection of species-specific variations.
abstract: Clones of cDNA coding for the autoantigen La (or SS-B) were isolated from a library made from rat liver. A comparison of the rat La cDNA (encoding from nt 38 to 1281 for rat La protein) with the sequences known for human and bovine La protein resulted in the identification of species-specific inserts. The inserts seem to be the result of multiplication of flanking sequences during evolution. In addition to these variations, we observed that rat La cDNAs exhibit non-canonical polyadenylation sites. Finally, a databank search resulted in the identification of a DNA sequence originally termed as TAG or TSG20X (GenBank accession No. X61893) which represents the C terminus of mouse La/SS-B protein.
authors.affiliation: Institut für Physiologische Chemie, Universität, Mainz, Germany.
authors.forename: I
authors.initials: I
authors.lastname: Semsei
authors.forename: H
authors.initials: H
authors.lastname: Tröster
authors.forename: H
authors.initials: H
authors.lastname: Bartsch
authors.forename: M
authors.initials: M
authors.lastname: Schwemmle
authors.forename: G L
authors.initials: GL
authors.lastname: Igloi
authors.forename: M
authors.initials: M
authors.lastname: Bachmann
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001324:Autoantigens / Q000235:genetics*; D001483:Base Sequence; D003001:Cloning, Molecular; D004247:DNA / Q000302:isolation & purification; D014644:Genetic Variation; D006801:Humans; D007438:Introns; D008969:Molecular Sequence Data; D051381:Rats; D012261:Ribonucleoproteins / Q000235:genetics*; D012689:Sequence Homology, Nucleic Acid; D013045:Species Specificity; D000097585:SS-B Antigen
chemical_list: D001324:Autoantigens; D004247:DNA; D012261:Ribonucleoproteins; D000097585:SS-B Antigen