Chitiniphilus shinanonensis gen. nov., sp. nov., a novel chitin-degrading bacterium belonging to Betaproteobacteria

J Gen Appl Microbiol. 2009 Apr;55(2):147-53. doi: 10.2323/jgam.55.147.


A bacterial strain capable of degrading chitin, strain SAY3T, was isolated from moat water of Ueda Castle in Nagano Prefecture, Japan. The strain was gram-negative, curved rod-shaped, facultatively anaerobic, and motile with a single polar flagellum. It grew well with chitin as a sole carbon source. The cellular fatty acids profiles showed the presence of C16:1 omega7c and C16:0 as the major components. The G+C content of DNA was 67.6 mol% and Q-8 was the major respiratory quinone. A 16S rRNA gene sequence-based phylogenetic analysis showed the strain belonged to the family Neisseriaceae but was distantly related (94% identity) to any previously known species. Since the strain was clearly distinct from closely related genera in phenotypic and chemotaxonomic characteristics, it should be classified under a new genus and a new species. We propose the name Chitiniphilus shinanonensis gen. nov., sp. nov. The type strain is SAY3T (=NBRC 104970T=NICMB 14509T).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Chemotaxis
  • Chitin / metabolism*
  • Microscopy, Electron, Transmission
  • Molecular Sequence Data
  • Neisseriaceae / classification*
  • Neisseriaceae / enzymology
  • Neisseriaceae / genetics
  • Neisseriaceae / metabolism*
  • Neisseriaceae / ultrastructure
  • Phylogeny
  • RNA, Ribosomal, 16S / genetics
  • Water Microbiology


  • RNA, Ribosomal, 16S
  • Chitin