Name: Oxobacter pfennigii (Krumholz and Bryant 1985) Collins et al. 1994

Category: Species

Proposed as: comb. nov.

Basonym: Clostridium pfennigii Krumholz and Bryant 1985

Etymology: pfen.ni’gi.i. N.L. gen. masc. n. pfennigii, of Pfennig, named after Norbert Pfennig, who first documented the catabolism of methyl groups of benzenoid compounds by an anaerobic bacterium

Pronunciation (Latin), gender: o-xo-BAK-ter pfen-NI-gi-i, masculine

Type strain: ATCC 43583; DSM 3222; V5-2

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: X77838 Analyse FASTA

Valid publication: Collins MD, Lawson PA, Willems A, Cordoba JJ, Fernandez-Garayzabal J, Garcia P, Cai J, Hippe H, Farrow JA. The phylogeny of the genus Clostridium: proposal of five new genera and eleven new species combinations. Int J Syst Bacteriol 1994; 44:812-826. 🇬🇧

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 44, part 4 of the IJSB. Int J Syst Bacteriol 1995; 45:199-200.

Nomenclatural status: validly published under the ICNP

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

Risk group: 1

• Synonyms:

  • Name	Kind
    Clostridium pfennigii Krumholz and Bryant 1985	homotypic synonym, validly published under the ICNP

• Notes:
  • 🥇 Nomenclatural type of the genus Oxobacter Collins et al. 1994. Publication: Collins MD, Lawson PA, Willems A, Cordoba JJ, Fernandez-Garayzabal J, Garcia P, Cai J, Hippe H, Farrow JA. The phylogeny of the genus Clostridium: proposal of five new genera and eleven new species combinations. Int J Syst Bacteriol 1994; 44:812-826. 🇬🇧
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 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 5 times in PubMed until 2026-06-11.
  • 🙆 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.

Parent taxon: Oxobacter Collins et al. 1994

Assigned by: Collins MD, Lawson PA, Willems A, Cordoba JJ, Fernandez-Garayzabal J, Garcia P, Cai J, Hippe H, Farrow JA. The phylogeny of the genus Clostridium: proposal of five new genera and eleven new species combinations. Int J Syst Bacteriol 1994; 44:812-826. 🇬🇧

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Record number: 779027