Isoptericola variabilis

(aka Cellulosimicrobium variabile)

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

Overview

  • Isoptericola variabilis, (aka Cellulosimicrobium variabile), is a Gram-positive, non-spore-forming, facultatively anaerobic, non-motile, pleiomorph rod-shaped bacterium. It has been detected in at least 2 gut microbiome compilation studies or metastudies. The DNA G+C content is 70-72%. Isoptericola variabilis is probably a rare gut coloniser. (Stackebrandt2004; Bakalidou2002)



  • This organism has been recovered from termite gut. The risk classification (www.baua.de) for this organism is 1, i.e., low risk of infection and spread. Pathogenicity status unknown, or very unlikely to be pathogenic. A possible gut commensal.
    • QUIRKS
  • Cellulolytic and xylanolytic
    • GENERAL CHARACTERISTICS (Stackebrandt2004); (Bakalidou2002);
    Character Response
  • Substrates hydrolysed or digested:
  • aesculin;
  • H+
  • Acid from carbohydrates usually produced:
  • L-arabinose; glucose; mannose; rhamnose; xylose; cellubiose; melibiose; raffinose; D-arabitol;
  • ⥅
  • Substrates assimilated or utilised:
  • N-acetylglucosamine; L-arabinose; arbutin; cellubiose; fructose; galactose; gluconate; glucose; maltose; mannitol; mannose; melibiose; rhamnose; ribose; salicin; sorbitol; sucrose; trehalose; histidine; proline; acetate; 3-hydroxybutyrate; pyruvate;
  • Active enzymes:
  • Ala arylamidase; alkaline phosphatase; acid phosphatase; β-galactosidase; α-glucosidase; β-glucosidase; Pro arylamidase; xylosidase;
    • SPECIAL FEATURES
    Character Response
  • Pigments:
  • yellow-white

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Actinobacteria Class:  Actinomycetia Order:  Micrococcales Family:  Promicromonosporaceae Genus:  Isoptericola Alt. name:  Cellulosimicrobium variabile Gram stain:  + O2 Relation.:  facultatively anaerobic Spore:  No spore Motility:  Sessile Morphology:  Pleiomorph rod Pigment:  yellow-white
    Health:  Unknown
    Source:  termite gut
    DNA G+C(%):  70-72
    		Aesculin:  +
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    L-Arabinose:  + Glucose:  + Mannose:  + Rhamnose:  + Xylose:  + Cellubiose:  + Maltose:  neg Melibiose:  + Sucrose:  neg Adonitol:  neg D-Arabitol:  + Dulcitol:  neg Erythritol:  neg Inositol:  neg Mannitol:  neg Sorbitol:  neg Me-α-D-Glc:  neg Salicin:  neg
    SUBSTRATE ASSIMILATION & UTILISATION
    Monosaccharide util/assim Oligosaccharide util/assim Other carboh. util/assim Amino acid util/assim Organic acid util/assim
    L-Arabinose:  + Fructose:  + Galactose:  + Glucose:  + Mannose:  + Rhamnose:  + Ribose:  + Cellubiose:  + Maltose:  + Melibiose:  + Sucrose:  + Trehalose:  + N_Acetyl_glucosamine:  + D-Arabitol:  neg Arbutin:  + Gluconate:  + Inositol:  neg Mannitol:  + Salicin:  + Sorbitol:  + Ala:  neg β-Ala:  neg His:  + Leu:  neg Orn:  neg Phe:  neg Pro:  + Trp:  neg Acetate:  + Aconitate:  neg Adipate:  neg Azelate:  neg Citrate:  neg Fumarate:  w Glutarate:  neg 3-Hydroxybutyrate:  + 3-Hydroxybenzoate:  neg 4-Hydroxybenzoate:  neg Itaconate:  neg L-Malate:  neg Mesaconate:  neg Phenylacetate:  neg Propionate:  neg Pyruvate:  + Sebacate:  neg
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    β-Galactosidase:  + α-Glucosidase:  + β-Glucosidase:  + β-Glucuronidase:  neg Xylosidase:  + AlanineAA:  + ProAA:  + AlkalineP:  + AcidP:  +
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		Pigment:  yellow-white

    References

    SPECIFIC REFERENCES FOR ISOPTERICOLA VARIABILIS
  • Stackebrandt2004 - Reclassification of Cellulosimicrobium variabile Bakalidou et al. 2002 as Isoptericola variabilis gen. nov., comb. nov.
  • Bakalidou2002 - Cellulosimicrobium variabile sp. nov., a cellulolytic bacterium from the hindgut of the termite Mastotermes darwiniensis.
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    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR ISOPTERICOLA VARIABILIS
  • Lagier2016 - Culture of previously uncultured members of the human gut microbiota by culturomics.
  • Zeller2014 - Potential of fecal microbiota for early-stage detection of colorectal cancer
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    • Added: January 14, 2022