Name: Peptacetobacter hiranonis (Kitahara et al. 2001) Chen et al. 2020

Category: Species

Proposed as: comb. nov.

Basonym: Clostridium hiranonis Kitahara et al. 2001

Etymology: hi.ra.no’nis. N.L. gen. masc. n. hiranonis, of Hirano, after the Japanese microbiologist Seiju Hirano for his contributions to the study of the isolate

Pronunciation, gender: hi-ra-NO-nis, masculine

Type strain: DSM 13275; JCM 10541; KCTC 15199; TO-931

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AF262237 Analyse FASTA

Valid publication: Chen XJ, Wang ZQ, Zhou ZY, Zeng NY, Huang QF, Wang ZW, Tang WL, Zhou HW. Characterization of Peptacetobacter hominis gen. nov., sp. nov., isolated from human faeces, and proposal for the reclassification of Clostridium hiranonis within the genus Peptacetobacter. Int J Syst Evol Microbiol 2020; 70:2988-2997.

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 70, part 5 of the IJSEM. Int J Syst Evol Microbiol 2020; 70:4421-4424.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

• Synonyms:

  • Name	Kind
    Clostridium hiranonis Kitahara et al. 2001	homotypic synonym, validly published under the ICNP

• Notes:
  • 🧬 The phylogenomic assignment score of this taxon is 0.09480 (N = 9).
  • 🎓 Name mentioned 8 times in PubMed until 2025-06-04.
  • 🫡 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded risk group of the genus. This name is not taxonomically suspended any more in favour of Clostridium hiranonis Kitahara et al. 2001. Publication: Kitahara M, Takamine F, Imamura T, Benno Y. Clostridium hiranonis sp. nov., a human intestinal bacterium with bile acid 7alpha-dehydroxylating activity. Int J Syst Evol Microbiol 2001; 51:39-44. Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 51, part 1 of the IJSEM. Int J Syst Evol Microbiol 2001; 51:269.

Parent taxon: Peptacetobacter Chen et al. 2020

Assigned by: Chen XJ, Wang ZQ, Zhou ZY, Zeng NY, Huang QF, Wang ZW, Tang WL, Zhou HW. Characterization of Peptacetobacter hominis gen. nov., sp. nov., isolated from human faeces, and proposal for the reclassification of Clostridium hiranonis within the genus Peptacetobacter. Int J Syst Evol Microbiol 2020; 70:2988-2997.

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Record number: 7609