Actinomyces johnsonii

Bacteria
General | Carbohydrate O/F | Substrate utilisation | Enzymes | Metabolites | Antibiotics

Overview

  • Actinomyces johnsonii is a Gram-positive, non-spore-forming, facultatively anaerobic, non-motile, rod-shaped bacterium. It has been detected in at least 3 gut microbiome compilation studies or metastudies. The DNA G+C content is 67%. Actinomyces johnsonii is probably a rare gut coloniser. (Henssge2009)



  • This organism has been recovered from healthy gingival crevice. Pathogenicity status unknown, or very unlikely to be pathogenic. It's gut microbiome symbiotic status is unknown.
    • GENERAL CHARACTERISTICS (Henssge2009);
    Character Response
  • ±
  • Strain-dependent hydrolysis or digestion:
  • urea;
  • H+
  • Acid from carbohydrates usually produced:
  • ribose; glycogen; lactose;
  • ±
  • Strain-dependent acid from carbs:
  • fructose; mannose; starch; trehalose; inositol;
  • Active enzymes:
  • arabinosidase; fucosidase; α-galactosidase; β-galactosidase; α-glucosidase; β-glucosidase; Leu arylamidase; Phe arylamidase; Pro arylamidase; Tyr arylamidase;
  • ±
  • Strain-dependent active enzymes:
  • alkaline phosphatase; catalase; urease;
    • SPECIAL FEATURES
    Character Response
  • ✓
  • Metabolites produced:
  • acetate; lactate; succinate;
  • ✓
  • Nitrate:
  • reduced

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Actinobacteria Class:  Actinomycetia Order:  Actinomycetales Family:  Actinomycetaceae Genus:  Actinomyces Gram stain:  + O2 Relation.:  facultatively anaerobic Spore:  No spore Motility:  Sessile Morphology:  Rod
    Health:  Unknown
    Source:  healthy gingival crevice
    DNA G+C(%):  67
    		Aesculin:  neg Urea:  d
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    Arabinose:  neg Fructose:  d Mannose:  d Ribose:  + Cellubiose:  neg Lactose:  + Trehalose:  d Glycogen:  + Starch:  d Inositol:  d Mannitol:  neg Salicin:  neg
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Catalase:  d Urease:  d α-Arab:  + Ac-β-glcamnd:  neg α-Fucosidase:  + α-Galactosidase:  + β-Galactosidase:  + α-Glucosidase:  + β-Glucosidase:  + β-Glucuronidase:  neg ArgDH:  neg GluDC:  neg AlanineAA:  neg ArgAA:  neg GluGluAA:  neg GlyAA:  neg HisAA:  neg LeuAA:  + LeuGlyAA:  neg ProAA:  + PheAA:  + PyrogluAA:  neg SerAA:  neg TyrAA:  + AlkalineP:  d

    References

    SPECIFIC REFERENCES FOR ACTINOMYCES JOHNSONII
  • Henssge2009 - Emended description of Actinomyces naeslundii and descriptions of Actinomyces oris sp. nov. and Actinomyces johnsonii sp. nov., previously identified as Actinomyces naeslundii genospecies 1, 2 and WVA 963.
  • ...............................
    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR ACTINOMYCES JOHNSONII
  • Byrd2020 - Stability and dynamics of the human gut microbiome and its association with systemic immune traits.
  • Lagier2016 - Culture of previously uncultured members of the human gut microbiota by culturomics.
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    • Added: January 14, 2022