Streptococcus castoreus

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

Overview

  • Streptococcus castoreus is a Gram-positive, non-spore-forming, facultatively anaerobic, non-motile, coccus bacterium. It has been detected in at least 2 gut microbiome compilation studies or metastudies. The DNA G+C content is 37.4%. Streptococcus castoreus is probably a rare gut coloniser. (Lawson2005a)



  • This organism has been recovered from a European beaver. The risk classification (www.baua.de) for this organism is 1, i.e., low risk of infection and spread (notes: opportunistic in immunocompromised patients). Can cause opportunistic infections, particularly in immunocompromised people. A possible gut commensal.
    • GENERAL CHARACTERISTICS (Lawson2005a);
    Character Response
  • Substrates hydrolysed or digested:
  • aesculin;
  • 🌡
  • Temperature tolerance:
  • Grows optimally at 37℃.
  • H+
  • Acid from carbohydrates usually produced:
  • glucose; starch; maltose; pullulan; sucrose;
  • Active enzymes:
  • Ala arylamidase; alkaline phosphatase; acid phosphatase; arginine dihydrolase; β-glucosidase; β-glucuronidase; Leu arylamidase; phosphoamidase; Pro arylamidase;
  • ±
  • Strain-dependent active enzymes:
  • β-mannosidase;
    • SPECIAL FEATURES (Lawson2005a);
    Character Response
  • ✓
  • Metabolites produced:
  • lactate;
  • ✗
  • Metabolites not produced:
  • indole;
  • ✗
  • VP test:
  • not active
  • Haemolysis:
  • beta
  • ✗
  • Nitrate:
  • not reduced

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Firmicutes Class:  Bacilli Order:  Lactobacillales Family:  Streptococcaceae Genus:  Streptococcus Gram stain:  + O2 Relation.:  facultatively anaerobic Spore:  No spore Motility:  Sessile Morphology:  Coccus
    Health:  Unknown
    Source:  a European beaver
    DNA G+C(%):  37.4
    Opt. T:  37℃
    		Aesculin:  + Urea:  neg Hippurate:  neg
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    L-Arabinose:  neg Glucose:  + D-Tagatose:  neg Lactose:  neg Maltose:  + Melezitose:  neg Melibiose:  neg Sucrose:  + Trehalose:  neg Glycogen:  neg Inulin:  neg Starch:  + D-Arabitol:  neg Mannitol:  neg Sorbitol:  neg
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Catalase:  neg Urease:  neg Ac-β-glcamnd:  neg α-Fucosidase:  neg α-Galactosidase:  neg β-Galactosidase:  neg α-Glucosidase:  neg β-Glucosidase:  + β-Glucuronidase:  + α-Mannosidase:  neg β-Mannosidase:  d ArgDH:  + Chymotrypsin:  neg Trypsin:  neg AlanineAA:  + CystineAA:  neg GlyTrpAA:  neg LeuAA:  + ProAA:  + PyrogluAA:  neg ValAA:  neg AlkalineP:  + AcidP:  + Esterase(C4):  neg EstLip(C8):  neg Lipase(C14):  neg Phosphoamidase:  +
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		Lactate:  + Indole:  neg

    References

    SPECIFIC REFERENCES FOR STREPTOCOCCUS CASTOREUS
  • Lawson2005a - Streptococcus castoreus sp. nov., isolated from a beaver (Castor fiber).
  • ...............................
    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR STREPTOCOCCUS CASTOREUS
  • Forster2019 - A human gut bacterial genome and culture collection for improved metagenomic analyses.
  • Lagier2016 - Culture of previously uncultured members of the human gut microbiota by culturomics.
  • ...............................
    • Added: January 14, 2022