Name: Butyrivibrio proteoclasticus (Attwood et al. 1996) Moon et al. 2008

Category: Species

Proposed as: comb. nov.

Basonym: Clostridium proteoclasticum Attwood et al. 1996

Etymology: pro.te.o.clas’ti.cus. N.L. neut. n. proteinum, protein; N.L. adj. clasticus -a -um, breaking; from Gr. adj. klastos -ê -on, broken in pieces; N.L. masc. adj. proteoclasticus, protein breaking

Pronunciation (Latin), gender: … pro-te-o-KLAS-ti-kus, masculine

Type strain: ATCC 51982; B 316; DSM 14932

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: U37378 Analyse FASTA

Valid publication: Moon CD, Pacheco DM, Kelly WJ, Leahy SC, Li D, Kopecny J, Attwood GT. Reclassification of Clostridium proteoclasticum as Butyrivibrio proteoclasticus comb. nov., a butyrate-producing ruminal bacterium. Int J Syst Evol Microbiol 2008; 58:2041-2045. 🇳🇿

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 58, part 9 of the IJSEM. Int J Syst Evol Microbiol 2008; 58:2675-2676.

Nomenclatural status: validly published under the ICNP

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

Risk group: 1

• Synonyms:

  • Name	Kind
    Clostridium proteoclasticum Attwood et al. 1996	homotypic synonym, validly published under the ICNP

• Notes:
  • 🧬 The phylogenomic assignment score of this taxon is 0.03484 (N = 83).
  • 😷 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 53 times 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 genus.

Parent taxon: Butyrivibrio Bryant and Small 1956 (Approved Lists 1980)

Assigned by: Moon CD, Pacheco DM, Kelly WJ, Leahy SC, Li D, Kopecny J, Attwood GT. Reclassification of Clostridium proteoclasticum as Butyrivibrio proteoclasticus comb. nov., a butyrate-producing ruminal bacterium. Int J Syst Evol Microbiol 2008; 58:2041-2045. 🇳🇿

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Record number: 787515