title: Structural comparison of two yeast tRNA Glu 3 genes.
abstract: DNA sequences in a 1.7 kb Pst fragment from yeast have been determined. This fragment is part of a yeast 7.4 kb Hind III segment cloned ino pBR322 (pY 5). The fragment carries a single gene for a glutamate tRNA. The coding portion of this gene is identical in sequence to that of the tRNA Glu 3 gene from pY 20 [1]. The flanking regions differ in their sequences, but possible secondary structures within the 5'-flanking regions bear similar features. Sequence homologies between pY 5 and pY 20 were detected far outside the tRNA genes. More surprisingly, extended sequence homologies were seen between the flanking regions of the pY 20 tRNA Glu 3 gene and a tRNA Ser gene [2,3]. We have also checked the known tRNA genes for structural similarities. Hybridization studies indicate that portions of the Pst fragment are repeated within the yeast genome.
mesh_terms: D001483:Base Sequence; D003001:Cloning, Molecular; D004262:DNA Restriction Enzymes; D004274:DNA, Recombinant; D005796:Genes; D005971:Glutamates / Q000235:genetics; D009690:Nucleic Acid Conformation; D009693:Nucleic Acid Hybridization; D010957:Plasmids; D012346:RNA, Transfer, Amino Acyl / Q000235:genetics*; D012441:Saccharomyces cerevisiae / Q000235:genetics*
chemical_list: D004274:DNA, Recombinant; D005971:Glutamates; D012346:RNA, Transfer, Amino Acyl; D004262:DNA Restriction Enzymes