Variation in the 16S-23S rRNA intergenic spacer regions in Vibrio parahaemolyticus strains are due to indels nearby their tRNAGlu.
Vibrio parahaemolyticus contains 11 rRNA operons each including one of six 16S-23S rRNA gene intergenic spacer classes differing in size and nucleotide sequence. Some of the spacer classes may differ between isolates. We observed that the differences in the spacers between isolates are generally in two spacer classes present in single copies in the genome, one class containing tRNA(Ala) and tRNA(Glu) and the other tRNA(Glu) exclusively. Moreover, these differences are due to indels located nearby their tRNA(Glu). Comparison of the nucleotide sequence between spacer classes suggests that intragenomic nonreciprocal recombination causes the size variations observed in the spacer regions of V. parahaemolyticus strains.
Laboratorio de Biotecnología, Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile, Santiago, Chile.
Narjol
N
González-Escalona
Jaime
J
Romero
Carlos A
CA
Guzmán
Romilio T
RT
Espejo
D001483:Base Sequence; D017931:DNA Primers / Q000737:chemistry; D004269:DNA, Bacterial / Q000737:chemistry; D021903:DNA, Ribosomal Spacer / Q000235:genetics*; D004591:Electrophoresis, Polyacrylamide Gel / Q000379:methods; D014644:Genetic Variation; D008969:Molecular Sequence Data; D016133:Polymerase Chain Reaction / Q000379:methods; D012352:RNA, Transfer, Glu / Q000502:physiology*; D011995:Recombination, Genetic / Q000235:genetics; D016415:Sequence Alignment; D014736:Vibrio parahaemolyticus / Q000145:classification / Q000235:genetics*; D012407:rRNA Operon / Q000235:genetics*
D017931:DNA Primers; D004269:DNA, Bacterial; D021903:DNA, Ribosomal Spacer; D012352:RNA, Transfer, Glu