Yokenella regensburgei gen. nov., sp. nov.: a new genus and species in the family Enterobacteriaceae

Jpn J Med Sci Biol. 1984 Jun;37(3):117-24. doi: 10.7883/yoken1952.37.117.


The name Yokenella gen. nov. is proposed for a group of organisms in the family Enterobacteriaceae isolated from clinical sources and insects. Yokenella is a gram-negative, oxidase-negative, fermentative, motile rod possessing the characteristics of the family Enterobacteriaceae and the guanine plus cytosine contents of the DNA range from 58.0 to 59.3 mol%. Biochemical characteristics of this group and DNA hybridization studies indicate that the 11 strains studied here comprise a separate species which should be best placed in a new genus. This single DNA hybridization group is named Yokenella regensburgei sp. nov. The type strain of Y. regensburgei is NIH 725-83 (JCM 2403).

Publication types

  • Comparative Study

MeSH terms

  • Animals
  • Culture Media
  • DNA, Bacterial / genetics
  • Enterobacteriaceae / classification*
  • Enterobacteriaceae / growth & development
  • Enterobacteriaceae / isolation & purification
  • Fermentation
  • Humans
  • Nucleic Acid Hybridization
  • Species Specificity


  • Culture Media
  • DNA, Bacterial