Name: Acidaminococcus fermentans Rogosa 1969 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: fer.men’tans. L. masc. part. adj. fermentans, fermenting

Pronunciation, gender: fer-MEN-tans, masculine

Type strain: ATCC 25085; CCUG 9996; CIP 106432; DSM 20731; VR4

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: X78017 Analyse FASTA

Effective publication: Rogosa M. Acidaminococcus gen. n., Acidaminococcus fermentans sp. n., anaerobic gram-negative diplococci using amino acids as the sole energy source for growth. J Bacteriol 1969; 98:756-766.

IJSEM list: Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.

Nomenclatural status: validly published under the ICNP

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

Risk group: 2

• Emendations:
  • Cook et al. 1994 Cook GM, Rainey FA, Chen G, Stackebrandt E, Russell JB. Emendation of the description of Acidaminococcus fermentans, a trans-aconitate- and citrate-oxidizing bacterium. Int J Syst Bacteriol 1994; 44:576-578. Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 44, part 3 of the IJSB. Int J Syst Bacteriol 1994; 44:853.

• Notes:
  • 🥇 Nomenclatural type of the genus Acidaminococcus Rogosa 1969 (Approved Lists 1980). Publication: Rogosa M. Acidaminococcus gen. n., Acidaminococcus fermentans sp. n., anaerobic gram-negative diplococci using amino acids as the sole energy source for growth. J Bacteriol 1969; 98:756-766.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 2, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 2. — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 2, note = "ht". — 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 85 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 species itself.
  • 🧍 According to Bartlett et al. (2022), this species is an established 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.
  • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project. Publication: Chang YJ, Pukall R, Saunders E, Lapidus A, Copeland A, Nolan M, Glavina Del Rio T, Lucas S, Chen F, Tice H, et al. Complete genome sequence of Acidaminococcus fermentans type strain (VR4). Stand Genomic Sci 2010; 3:1-14.

Parent taxon: Acidaminococcus Rogosa 1969 (Approved Lists 1980)

Assigned by: Rogosa M. Acidaminococcus gen. n., Acidaminococcus fermentans sp. n., anaerobic gram-negative diplococci using amino acids as the sole energy source for growth. J Bacteriol 1969; 98:756-766.

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Record number: 772571