Helicobacter heilmannii

(aka Gastrospirillum hominis)

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

Overview

  • Helicobacter heilmannii, (aka Gastrospirillum hominis), is a Gram-negative, non-spore-forming, microaerophilic, motile, helical-shaped bacterium. It has been detected in at least 2 gut microbiome compilation studies or metastudies. Helicobacter heilmannii is unlikely to be a gut coloniser. (McNulty1989; Smet2012)



  • This organism has been recovered from the gastic mucosa of a cat. Could be a possible pathogen in humans, but unknown at this stage. A possible gut commensal.
    • GENERAL CHARACTERISTICS (McNulty1989); (Smet2012);
    Character Response
  • Substrates hydrolysed or digested:
  • hippurate;
  • 🧂
  • Salt tolerance:
  • doesn't tolerate 1.5% salt;
  • 💧
  • Bile tolerance:
  • Doesn't tolerate 1% bile
  • 🌡
  • Temperature tolerance:
  • doesn't grow at 25℃; doesn't grow at 42℃; Grows optimally at 37℃.
  • Active enzymes:
  • Arg arylamidase; catalase; esterase; γ-Glu transferase; oxidase; urease;
    • SPECIAL FEATURES
    Character Response
  • ✓
  • Nitrate:
  • reduced

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Proteobacteria Class:  Epsilonproteobacteria Order:  Campylobacterales Family:  Helicobacteraceae Genus:  Helicobacter Alt. name:  Gastrospirillum hominis Gram stain:  neg O2 Relation.:  microaerophilic Spore:  No spore Motility:  Swimming Morphology:  Helical
    Health:  Unknown
    Source:  the gastic mucosa of a cat
    Opt. T:  37℃
    Lower T(℃):  25(neg)
    High T(℃):  42(neg)
    NaCl 0.5-2%:  1.5(neg)
    Bile reaction(%):  1(neg)
    		Hippurate:  +
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Oxidase:  + Catalase:  + Urease:  + γ-Glu transf.:  + ArgAA:  + AspAA:  neg PyrrolidAA:  neg AlkalineP:  neg Esterase:  +

    References

    SPECIFIC REFERENCES FOR HELICOBACTER HEILMANNII
  • McNulty1989 - New spiral bacterium in gastric mucosa.
  • Smet2012 - Helicobacter heilmannii sp. nov., isolated from feline gastric mucosa.
  • Solnick1993 - An uncultured gastric spiral organism is a newly identified Helicobacter in humans.
  • Stolte1994 - Helicobacter heilmannii (formerly Gastrospirillum hominis) gastritis: an infection transmitted by animals?
  • ...............................
    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR HELICOBACTER HEILMANNII
  • Byrd2020 - Stability and dynamics of the human gut microbiome and its association with systemic immune traits.
  • Lagier2016 - Culture of previously uncultured members of the human gut microbiota by culturomics.
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    • Added: January 14, 2022