Name: Parabacteroides johnsonii Sakamoto et al. 2007

Category: Species

Proposed as: sp. nov.

Etymology: john.so’ni.i. N.L. gen. masc. n. johnsonii, of Johnson, named after the American molecular taxonomist John L. Johnson, who was the first to describe Bacteroides merdae (Parabacteroides merdae)

Gender: masculine

Type strain: DSM 18315; JCM 13406; M-165

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB261128 Analyse FASTA

Valid publication: Sakamoto M, Kitahara M, Benno Y. Parabacteroides johnsonii sp. nov., isolated from human faeces. Int J Syst Evol Microbiol 2007; 57:293-296.

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 57, part 2 of the IJSEM. Int J Syst Evol Microbiol 2007; 57:898-899.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Emendations:
  • Hahnke et al. 2016 Hahnke RL, Meier-Kolthoff JP, Garcia-Lopez M, Mukherjee S, Huntemann M, Ivanova NN, Woyke T, Kyrpides NC, Klenk HP, Goker M. Genome-Based Taxonomic Classification of Bacteroidetes. Front Microbiol 2016; 7:2003. Oren A, Garrity GM. List of changes in taxonomic opinion no. 26. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2017; 67:2081-2086.

• Notes:
  • 😷 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.
  • 🎓 Name mentioned 12 times in PubMed until 2024-03-28.
  • 🧍 The phylogenetic position of this species was determined in a genome-scale analysis by García-López et al. (2019). Publication: Garcia-Lopez M, Meier-Kolthoff JP, Tindall BJ, Gronow S, Woyke T, Kyrpides NC, Hahnke RL, Goker M. Analysis of 1,000 Type-Strain Genomes Improves Taxonomic Classification of Bacteroidetes. Front Microbiol 2019; 10:2083.

Parent taxon: Parabacteroides Sakamoto and Benno 2006

Assigned by: Sakamoto M, Kitahara M, Benno Y. Parabacteroides johnsonii sp. nov., isolated from human faeces. Int J Syst Evol Microbiol 2007; 57:293-296.

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Record number: 785951