Name: Collinsella tanakaei Nagai et al. 2010

Category: Species

Proposed as: sp. nov.

Etymology: ta.nak’aei. N.L. gen. masc. n. tanakaei, of Tanaka, to honour Ryuichiro Tanaka, a Japanese microbiologist, for his contribution to increased knowledge about human intestinal microbiota and probiotics

Gender: feminine

Type strain: DSM 22478; JCM 16071; YIT 12063

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB490807 Analyse FASTA

Valid publication: Nagai F, Watanabe Y, Morotomi M. Slackia piriformis sp. nov. and Collinsella tanakaei sp. nov., new members of the family Coriobacteriaceae, isolated from human faeces. Int J Syst Evol Microbiol 2010; 60:2639-2646.

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 60, part 11 of the IJSEM. Int J Syst Evol Microbiol 2011; 61:221-222.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 🧬 The phylogenomic assignment score of this taxon is 0.00054 (N = 1).
  • 😷 The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1.
  • 🎓 Name mentioned 9 times in PubMed until 2024-03-27.
  • 🧍 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 2022; 168:0.
  • 🧍 The phylogenetic position of this species was determined in a genome-scale analysis by Nouioui et al. (2018). Publication: Nouioui I, Carro L, Garcia-Lopez M, Meier-Kolthoff JP, Woyke T, Kyrpides NC, Pukall R, Klenk HP, Goodfellow M, Goker M. Genome-Based Taxonomic Classification of the Phylum Actinobacteria. Front Microbiol 2018; 9:2007.

Parent taxon: Collinsella Kageyama et al. 1999

Assigned by: Nagai F, Watanabe Y, Morotomi M. Slackia piriformis sp. nov. and Collinsella tanakaei sp. nov., new members of the family Coriobacteriaceae, isolated from human faeces. Int J Syst Evol Microbiol 2010; 60:2639-2646.

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Record number: 788869