Variable rRNA gene copies in extreme halobacteria

Nucleic Acids Res. 1988 Aug 25;16(16):7827-32. doi: 10.1093/nar/16.16.7827.

Abstract

Using PFG electrophoresis techniques, we have examined the organization of rRNA gene in halobacterium species. The results show that the organization of rRNA genes among closely related halobacteria is quite heterogeneous. This contrasts with the high degree of conservation of rRNA sequence (1). The possible mechanism of such rRNA gene amplification and its evolutionary implications are discussed.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • DNA, Bacterial / genetics
  • Gene Amplification
  • Genes, Bacterial*
  • Genetic Variation
  • Halobacteriaceae / genetics*
  • Nucleic Acid Hybridization
  • RNA, Bacterial / genetics
  • RNA, Ribosomal / genetics*
  • RNA, Ribosomal, 16S / genetics
  • RNA, Ribosomal, 23S / genetics

Substances

  • DNA, Bacterial
  • RNA, Bacterial
  • RNA, Ribosomal
  • RNA, Ribosomal, 16S
  • RNA, Ribosomal, 23S