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Taxonomy: V4.3   |  16S rRNA RefSeq: V16.03   |  Genomic RefSeq: V11.03   |  Viruses: V1.2
Taxon Table | Genome Table

Actinomyces naeslundii (HMT-0176)

Bacteria;Actinomycetota;Actinomycetes;Actinomycetales;Actinomycetaceae;Actinomyces naeslundii

Taxon Description:
Classification:
Bracketed letters indicate
that the taxonomic name at this
level has not been established.
  • Examples:
  • C1 – First Unnamed Class
  • O1 – First Unnamed Order
  • F2 – Second Unnamed Family
  • G3 – Third Unnamed Genus
Domain: Bacteria
Phylum: Actinomycetota
Class: Actinomycetes
Order: Actinomycetales
Family: Actinomycetaceae
Genus: Actinomyces
Species:naeslundii
Bacterial Name: Actinomyces naeslundii
Naming Status: Named
Cultivation Status: Cultivated
Body Site (or Source):
  [View in Body Sites Table] 		Primary: Oral (Abundance: high)
Note: Supragingival plaque
Reason: Metagenomic mapping data, HMP (Torres-Morales et al. 2026)
Type/Reference Strain:
Former Names or Synonyms:
Class: Actinomycetia
Oral Clone EP011
Phylum: Actinobacteria
16S rRNA RefSeq Tree: View Taxon in RefSeq Tree
16S rRNA Reference Sequences:
     RefSeq-ID(s)
HMT-176_16S000370 Show Sequence
HMT-176_16S000392 Show Sequence
HMT-176_16S000393 Show Sequence
HMT-176_16S000398 Show Sequence
HMT-176_16S000423 Show Sequence
HMT-176_16S000424 Show Sequence
HMT-176_16S000444 Show Sequence
HMT-176_16S000454 Show Sequence
HMT-176_16S000458 Show Sequence
HMT-176_16S000463 Show Sequence
HMT-176_16S001795 Show Sequence
HMT-176_16S003102 Show Sequence
HMT-176_16S003128 Show Sequence
HMT-176_16S006511 Show Sequence

Download latest 16S rRNA reference gene sequences.
species/ActinoYellow_CoryneMagenta_FromMW2016FigS3.jpg Actinomyces (yellow) intermingled with Corynebacterium (magenta) in human dental plaque. From Mark Welch et al. 2016
Number of
Genome Sequences:		 28 Open Genomes in Table
Pangenome(s): No Pangenomes Available.
Microbial Ecology: Abundance/Prevalence
Proteomics:
NCBI Taxon ID: 1655 [Link to NCBI]
LPSN.dsmz.de: https://lpsn.dsmz.de/species/Actinomyces-naeslundii
PubMed Searches:
NCBI PubMed Link
NCBI (Entrez) Nucleotide Link
NCBI (Entrez) Protein Link
Phylogenetic Trees:
Genome Tree
Ribosomal Protein Tree
16S rRNA Gene Tree
References:
[1] Putnins EE, Bowden GH. Antigenic relationships among oral Actinomyces isolates, Actinomyces naeslundii genospecies 1 and 2, Actinomyces howellii, Actinomyces denticolens, and Actinomyces slackii. J Dent Res. 1993 Oct;72(10):1374-85
[2] Johnson JL, Moore LV, Kaneko B, Moore WE. Actinomyces georgiae sp. nov., Actinomyces gerencseriae sp. nov., designation of two genospecies of Actinomyces naeslundii, and inclusion of A. naeslundii serotypes II and III and Actinomyces viscosus Int J Syst Bacteriol. 1990 Jul;40(3):273-86
[3] Ramos CP, Foster G, Collins MD. Phylogenetic analysis of the genus Actinomyces based on 16S rRNA gene sequences: description of Arcanobacterium phocae sp. nov., Arcanobacterium bernardiae comb. nov., and Arcanobacterium pyogenes com Int J Syst Bacteriol. 1997 Jan;47(1):46-53