Streptococcus rubneri

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

Overview

  • Streptococcus rubneri is a Gram-positive, non-spore-forming, facultatively anaerobic, non-motile, coccus bacterium. It has been detected in at least 1 gut microbiome compilation study or metastudy. The DNA G+C content is 40.9%. Streptococcus rubneri is probably a rare gut coloniser. (Huch2013)



  • This organism has been recovered from the throat. Could be a possible pathogen in humans, but unknown at this stage. A possible gut commensal.
    • GENERAL CHARACTERISTICS (Huch2013);
    Character Response
  • 🧂
  • Salt tolerance:
  • doesn't tolerate 6.5% salt;
  • pH
  • Acidity tolerance:
  • doesn't tolerate pH 9.6;
  • 🌡
  • Temperature tolerance:
  • grows at 25℃; strain-variable at 45(d); Grows optimally at 37℃.
  • H+
  • Acid from carbohydrates usually produced:
  • fructose; galactose; glucose; cellubiose; lactose; maltose; raffinose; sucrose; N-Ac glucosamine; salicin;
  • ±
  • Strain-dependent acid from carbs:
  • melibiose; sorbitol;
  • Active enzymes:
  • Leu arylamidase;
    • SPECIAL FEATURES (Huch2013);
    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:  the throat
    DNA G+C(%):  40.9
    Opt. T:  37℃
    Lower T(℃):  25(+)
    High T(℃):  45(d)
    NaCl >6%:  6.5(neg)
    pH >8:  9.6(neg)
    		Aesculin:  neg Starch:  neg Arginine:  neg Hippurate:  neg
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    D-Arabinose:  neg L-Arabinose:  neg Fructose:  + Fucose:  neg D-Fucose:  neg Galactose:  + Glucose:  + D-Lyxose:  neg Rhamnose:  neg Ribose:  neg Sorbose:  neg D-Tagatose:  neg Xylose:  neg L-Xylose:  neg Cellubiose:  + Gentiobiose:  neg Lactose:  + Maltose:  + Melezitose:  neg Melibiose:  d Sucrose:  + Trehalose:  neg Amygdalin:  neg Aesculin:  neg Glycogen:  neg Inulin:  neg Starch:  neg Adonitol:  neg Dulcitol:  neg Erythritol:  neg Glycerol:  neg Inositol:  neg Mannitol:  neg Sorbitol:  d Xylitol:  neg Arbutin:  neg 2-Ketogluconate:  neg 5-Ketogluconate:  neg Me-α-D-Glc:  neg Me-α-D-Mann:  neg Me-Xyloside:  neg NAc-α-GA:  + Salicin:  +
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Catalase:  neg α-Galactosidase:  neg β-Galactosidase:  neg β-Glucosidase:  neg β-Glucuronidase:  neg LeuAA:  + PyrrolidAA:  neg AlkalineP:  neg
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		Lactate:  + Indole:  neg

    References

    SPECIFIC REFERENCES FOR STREPTOCOCCUS RUBNERI
  • Huch2013 - Streptococcus rubneri sp. nov., isolated from the human throat.
  • ...............................
    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR STREPTOCOCCUS RUBNERI
  • Zou2019 - 1,520 reference genomes from cultivated human gut bacteria enable functional microbiome analyses.
  • ...............................
    • Added: February 09, 2022