Name: Peptoniphilus koenoeneniae Ulger-Toprak et al. 2012

Category: Species

Proposed as: sp. nov.

Etymology: koe.noe.ne’ni.ae. N.L. gen. fem. n. koenoeneniae, of Könönen, to honour Dr Eija Könönen, Finnish microbiologist and dentist who has contributed a great deal to our knowledge of oral microbiology and anaerobic bacteriology

Pronunciation (Latin), gender: … ko͡e-no͡e-NE-ni-a͡e, masculine

Type strain: ATCC BAA-1638; CCUG 56067; DSM 22616; WAL 18898

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: EU526291 Analyse FASTA

Valid publication: Ulger-Toprak N, Lawson PA, Summanen P, O'Neal L, Finegold SM. Peptoniphilus duerdenii sp. nov. and Peptoniphilus koenoeneniae sp. nov., isolated from human clinical specimens. Int J Syst Evol Microbiol 2012; 62:2336-2341. 🇺🇸

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 62, part 10 of the IJSEM. Int J Syst Evol Microbiol 2013; 63:6-7.

Nomenclatural status: validly published under the ICNP

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

Risk group: 2

• 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. Whether taxa can have "members" is debatable. See the LPSN phylogeny page for details. Publication: Göker M. What can genome analysis offer for bacteria? In: Bridge P, Smith D, Stackebrandt E (eds), Trends in the systematics of bacteria and fungi, CAB International, Wallingford, 2021, p. 255-281. 🇬🇧
  • 😷 The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 2. — 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 1 time 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 species itself.
  • 🧍 According to Bartlett et al. (2022), this species is a putative human pathogen. Publication: Bartlett A, Padfield D, Lear L, Bendall R, Vos M. A comprehensive list of bacterial pathogens infecting humans. Microbiology (Reading) 2022; 168:0. 🇬🇧
  • 🧍 In the paper by Ulger-Toprak et al. 2012, the 16S rRNA sequence of the strain WAL 18896 is cited as EU526291. However, according to the NCBI Nucleotide, EU526291 is the sequence of the strain WAL 20371I. Publication: Euzeby JP. List of Bacterial Names with Standing in Nomenclature: a folder available on the Internet. Int J Syst Bacteriol 1997; 47:590-592. 🇫🇷

Parent taxon: Peptoniphilus Ezaki et al. 2001

Assigned by: Ulger-Toprak N, Lawson PA, Summanen P, O'Neal L, Finegold SM. Peptoniphilus duerdenii sp. nov. and Peptoniphilus koenoeneniae sp. nov., isolated from human clinical specimens. Int J Syst Evol Microbiol 2012; 62:2336-2341. 🇺🇸

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Record number: 790206