Article · Wikipedia archive · Last revised Jun 7, 2026

Acidaminococcus

Acidaminococcus is a genus in the phylum Bacillota (Bacteria), whose members are anaerobic diplococci that can use amino acids as the sole energy source for growth. Like other members of the class Negativicutes, they are gram-negative, despite being Bacillota, which are normally gram-positive.

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Acidaminococcus
Scientific classification Edit this classification
Domain: Bacteria
Kingdom: Bacillati
Phylum: Bacillota
Class: Negativicutes
Order: Acidaminococcales
Family: Acidaminococcaceae
Genus: Acidaminococcus
Rogosa 1969
Type species
Acidaminococcus fermentans
Rogosa 1969
Species
  • A. fermentans
  • A. hominis
  • A. intestini
  • "A. massiliensis"
  • "A. provencensis"
  • "A. timonensis"

Acidaminococcus is a genus in the phylum Bacillota (Bacteria), whose members are anaerobic diplococci that can use amino acids as the sole energy source for growth.1 Like other members of the class Negativicutes, they are gram-negative, despite being Bacillota, which are normally gram-positive.

Etymology

The name Acidaminococcus derives from:
Neo-Latin noun acidum (from Latin adjective acidus, sour), an acid; Neo-Latin adjective aminus, amino; Neo-Latin masculine gender noun coccus (from Greek masculine gender noun kokkos (κόκκος), grain, seed), coccus-shaped; Neo-Latin masculine gender noun Acidaminococcus, the amino acid coccus.1

Phylogeny

The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN)1 and National Center for Biotechnology Information (NCBI).2

16S rRNA based LTP_10_2024345 120 marker proteins based GTDB 10-RS226678
Acidaminococcus

A. intestini

A. fermentans

A. hominis

Acidaminococcus

A. intestini Jumas-Bilak et al. 20079

A. hominis Abdugheni et al. 2023 [incl. "A. provencensis" Takakura et al. 2019]

"A. timonensis" Ricaboni et al. 2017

A. fermentans Rogosa 196910

"A. massiliensis" Ricaboni et al. 2017

See also

See also

References

References

  1. Acidaminococcus in LPSN; Freese, H. M.; Meier-Kolthoff, J. P.; Sardà Carbasse, J.; Afolayan, A. O.; Göker, M. (29 October 2025). "TYGS and LPSN in 2025: a Global Core Biodata Resource for genome-based classification and nomenclature of prokaryotes within DSMZ Digital Diversity". Nucleic Acids Research. 53: D1–D12. doi:10.1093/nar/gkaf1110.
  2. Schoch CL; et al. "Acidaminococcus". National Center for Biotechnology Information (NCBI) taxonomy database. Retrieved 2025-06-05.
  3. "The LTP". Retrieved 10 December 2024.
  4. "LTP_all tree in newick format". Retrieved 10 December 2024.
  5. "LTP_10_2024 Release Notes" (PDF). Retrieved 10 December 2024.
  6. "GTDB release 10-RS226". Genome Taxonomy Database. Retrieved 1 May 2025.
  7. "bac120_r226.sp_label". Genome Taxonomy Database. Retrieved 1 May 2025.
  8. "Taxon History". Genome Taxonomy Database. Retrieved 1 May 2025.
  9. Jumas-Bilak, E.; Carlier, J. -P.; Jean-Pierre, H.; Mory, F.; Teyssier, C.; Gay, B.; Campos, J.; Marchandin, H. (2007). "Acidaminococcus intestini sp. Nov., isolated from human clinical samples". International Journal of Systematic and Evolutionary Microbiology. 57 (10): 2314–2319. doi:10.1099/ijs.0.64883-0. PMID 17911303.
  10. "Approved Lists of Bacterial Names -- SKERMAN et al. 30 (1): 225 -- International Journal of Systematic Bacteriology". Archived from the original on 2009-09-04. Retrieved 2009-09-04.