Name: Catenibacterium mitsuokai Kageyama and Benno 2000

Category: Species

Proposed as: sp. nov.

Etymology: mit.su.o’ka.i. N.L. gen. masc. n. mitsuokai, of Mitsuoka, named after K. Mitsuoka, a Japanese microbiologist

Pronunciation, gender: mit-su-O-ka-i, neuter

Type strain: CCUG 48821; CCUG 48821 A; CCUG 48821 B; CIP 106738; DSM 15897; JCM 10609; RCA 14-39

Conduct genome-based taxonomy at

16S rRNA gene: AB910738 Analyse FASTA

Valid publication: Kageyama A, Benno Y. Catenibacterium mitsuokai gen. nov., sp. nov., a gram-positive anaerobic bacterium isolated from human faeces. Int J Syst Evol Microbiol 2000; 50:1595-1599.

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 50, part 4 of the IJSEM. Int J Syst Evol Microbiol 2000; 50:1701-1702.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Emendations:
  • Ricci et al. 2025 Ricci L, Selma-Royo M, Golzato D, Servais C, Nabinejad A, Marchi P, Puncochar M, Trenti F, Garcia-Aloy M, Armanini F, et al. Description of Catenibacterium mitsuokai subsp. tridentinum subsp. nov., an anaerobic bacterium isolated from human faeces, and emended description of C. mitsuokai. Int J Syst Evol Microbiol 2025; 75:6798. Oren A, Göker M. Notification list. Notification that new names and new combinations have appeared in volume 75, part 5 of the IJSEM. Int J Syst Evol Microbiol 2025; 75:6824.
    Notes:
    • 😢 The terminology used by the authors is in line with many other taxonomic studies and does not negatively affect their main results; some improvements may nevertheless be possible. Contrasting the term "chemotaxonomic" with "phenotypic" is not recommended. Using the term "phylogenetic data" (or equivalent) for sequence data is not advocated. See the LPSN phylogeny page for details.

• Notes:
  • 🥇 Nomenclatural type of the genus Catenibacterium Kageyama and Benno 2000. Publication: Kageyama A, Benno Y. Catenibacterium mitsuokai gen. nov., sp. nov., a gram-positive anaerobic bacterium isolated from human faeces. Int J Syst Evol Microbiol 2000; 50:1595-1599.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1". — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1. — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
  • 🎓 Name mentioned 9 times in PubMed until 2025-06-04.
  • 🧍 According to Bartlett et al. (2022), this species was isolated from feces in healthy individuals. Publication: Bartlett A, Padfield D, Lear L, Bendall R, Vos M. A comprehensive list of bacterial pathogens infecting humans. Microbiology (Reading) 2022; 168:0.

Subdivision:

Number of child taxa with a validly published and correct name: 2
Number of child taxa with a validly published name, including synonyms: 2
Total number of child taxa: 2

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Catenibacterium mitsuokai subsp. mitsuokai (Kageyama and Benno 2000) Ricci et al. 2025	validly published under the ICNP	correct name
    Catenibacterium mitsuokai subsp. tridentinum Ricci et al. 2025	validly published under the ICNP	correct name

Parent taxon: Catenibacterium Kageyama and Benno 2000

Assigned by: Kageyama A, Benno Y. Catenibacterium mitsuokai gen. nov., sp. nov., a gram-positive anaerobic bacterium isolated from human faeces. Int J Syst Evol Microbiol 2000; 50:1595-1599.

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Record number: 774509