Caldicoprobacter faecalis

(aka Acetomicrobium faecalis)

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

Overview

  • Caldicoprobacter faecalis, (aka Acetomicrobium faecalis), is a Gram-negative, non-spore-forming, strictly anaerobic, motile, rod-shaped - curved bacterium. It has been detected in at least 1 gut microbiome compilation study or metastudy. The DNA G+C content is 45%. Caldicoprobacter faecalis is likely to be transient and not a long-term gut coloniser. (BouananeDarenfed2015; Winter1987)



  • This organism has been recovered from sewage sludge. Pathogenicity status unknown, or very unlikely to be pathogenic. Likely to be transient and not a long-term gut commensal.
    • QUIRKS
  • The minimum temperature for growth is 55C, so unlikely to be a gut coloniser.
    • GENERAL CHARACTERISTICS (BouananeDarenfed2015); (Winter1987);
    Character Response
  • 🧂
  • Salt tolerance:
  • tolerates 0-2% salt; doesn't tolerate 4% salt; Grows optimally with 0-3% salt.
  • pH
  • Acidity tolerance:
  • tolerates pH 5.5; tolerates pH 9; Grows optimally at pH 6.5.
  • 🌡
  • Temperature tolerance:
  • grows at 55-74℃; Grows optimally at 70-73℃.
  • H+
  • Acid from carbohydrates usually produced:
  • arabinose; fructose; galactose; glucose; mannose; rhamnose; ribose; xylose; cellubiose; lactose; maltose; melibiose; sucrose; salicin;
    • SPECIAL FEATURES (Winter1987);
    Character Response
  • ✓
  • Metabolites produced:
  • acetate; lactate; ethanol; CO₂; H₂;

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Firmicutes Class:  Clostridia Order:  Eubacteriales Family:  Caldicoprobacteraceae Genus:  Caldicoprobacter Alt. name:  Acetomicrobium faecalis Gram stain:  neg O2 Relation.:  strictly anaerobic Spore:  No spore Motility:  Swimming Morphology:  Rod - curved
    Health:  Unknown
    Source:  sewage sludge
    DNA G+C(%):  45
    Opt. T:  70-73℃
    High T(℃):  55-74(+)
    NaCl 0.5-2%:  0-2(+)
    NaCl 3-5%:  4(neg)
    Opt. pH:  6.5
    pH 4.2-5.9:  5.5(+)
    pH >8:  9(+)
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    Arabinose:  + Fructose:  + Galactose:  + Glucose:  + Mannose:  + Rhamnose:  + Ribose:  + Xylose:  + Cellubiose:  + Lactose:  + Maltose:  + Melibiose:  + Sucrose:  + Cellulose:  neg Glycogen:  neg Starch:  neg Pectin:  w Xylan:  neg Glycerol:  neg Mannitol:  neg Sorbitol:  neg Salicin:  +
    SUBSTRATE ASSIMILATION & UTILISATION
    Monosaccharide util/assim Oligosaccharide util/assim Other carboh. util/assim Amino acid util/assim Organic acid util/assim
    Lactate:  neg Pyruvate:  neg

    References

    SPECIFIC REFERENCES FOR CALDICOPROBACTER FAECALIS
  • BouananeDarenfed2015 - Reclassification of Acetomicrobium faecale as Caldicoprobacter faecalis comb. nov.
  • Winter1987 - Acetomicrobium faecalis spec, nov., a strictly anaerobic bacterium from sewage sludge, producing ethanol from pentoses.
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    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR CALDICOPROBACTER FAECALIS
  • Forster2019 - A human gut bacterial genome and culture collection for improved metagenomic analyses.
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    • Added: February 09, 2022