Mycoplasmas (Mollicutes) have a low number of rRNA genes

J Bacteriol. 1984 Apr;158(1):376-8. doi: 10.1128/jb.158.1.376-378.1984.


DNA from Mycoplasma, Ureaplasma, Acholeplasma, and Spiroplasma species digested by restriction endonucleases was hybridized with probes consisting of portions of the rrnB rRNA operon of Escherichia coli and the rRNA operon of Mycoplasma capricolum. The results indicate the presence of only one or two sets of rRNA genes in the genome of Mollicutes linked in the procaryotic fashion, 16S-23S-5S.

Publication types

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

MeSH terms

  • Acholeplasma / genetics
  • Base Sequence
  • DNA, Bacterial / genetics
  • Escherichia coli / genetics
  • Genes, Bacterial*
  • Mycoplasma / genetics
  • Mycoplasmatales / genetics*
  • Nucleic Acid Hybridization
  • Operon
  • RNA, Bacterial / genetics*
  • RNA, Ribosomal / genetics*
  • Spiroplasma / genetics
  • Ureaplasma / genetics


  • DNA, Bacterial
  • RNA, Bacterial
  • RNA, Ribosomal