Ammonifex degensii

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

Overview

  • Ammonifex degensii is a Gram-negative, non-spore-forming, strictly anaerobic, motile, rod-shaped bacterium. It has been detected in at least 1 gut microbiome compilation study or metastudy. The DNA G+C content is 54%. Ammonifex degensii is unlikely to be a gut coloniser. (Huber1996)



  • This organism has been recovered from a solfataric spring, Indonesia. 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. Likely to be transient and not a long-term gut commensal.
    • QUIRKS
  • Cannot grow when temperatures drop below 57C, so likely not a gut coloniser.
    • GENERAL CHARACTERISTICS (Huber1996);
    Character Response
  • 🧂
  • Salt tolerance:
  • tolerates 0-1.5% salt; Grows optimally with 0.1% salt.
  • pH
  • Acidity tolerance:
  • tolerates pH 5.0; tolerates pH 8.0; Grows optimally at pH 7.5.
  • 🌡
  • Temperature tolerance:
  • doesn't grow at 40℃; grows at 57-77℃; Grows optimally at 70℃.
  • ⥅
  • Substrates assimilated or utilised:
  • formate; pyruvate; H2 consumed;
    • SPECIAL FEATURES (Huber1996);
    Character Response
  • ✓
  • Metabolites produced:
  • acetate; H₂S; ammonia; CO₂; H₂;
  • Lysozyme:
  • inhibited
  • ✓
  • Nitrate:
  • reduced
  • ✓
  • Sulfate:
  • reduced

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Firmicutes Class:  Clostridia Order:  Thermoanaerobacterales Family:  Thermoanaerobacteraceae Genus:  Ammonifex Gram stain:  neg O2 Relation.:  strictly anaerobic Spore:  No spore Motility:  Swimming Morphology:  Rod
    Health:  Unknown
    Source:  a solfataric spring, Indonesia
    DNA G+C(%):  54
    Opt. T:  70℃
    Mid T(℃):  40(neg)
    High T(℃):  57-77(+)
    NaCl 0.5-2%:  0-1.5(+)
    Opt. pH:  7.5
    pH 4.2-5.9:  5.0(+)
    pH 6.0-8.0:  8.0(+)
    SUBSTRATE ASSIMILATION & UTILISATION
    Monosaccharide util/assim Oligosaccharide util/assim Other carboh. util/assim Amino acid util/assim Organic acid util/assim
    Formate:  + Pyruvate:  +
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		Acetate:  + H2S:  + Ammonia:  + CO2:  + H2:  +

    References

    SPECIFIC REFERENCES FOR AMMONIFEX DEGENSII
  • Huber1996 - Formation of ammonium from nitrate during chemolithoautotrophic growth of the extremely thermophilic bacterium Ammonifex degensii gen. nov. sp. nov.
  • ...............................
    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR AMMONIFEX DEGENSII
  • New2022 - Collective effects of human genomic variation on microbiome function.
  • ...............................
    • Added: March 18, 2022