Halobacillus ihumii

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

Overview

  • Halobacillus ihumii is a Gram-positive, non-spore-forming, strictly aerobic, motile, rod-shaped bacterium. The DNA G+C content is 41.1%. Halobacillus ihumii is probably a rare gut coloniser. (Konate2020)



  • This organism has been recovered from human faeces (healthy). Pathogenicity status unknown, or very unlikely to be pathogenic. A possible gut commensal.
    • QUIRKS
  • Strictly halophilic.
    • GENERAL CHARACTERISTICS (Konate2020);
    Character Response
  • Substrates hydrolysed or digested:
  • aesculin;
  • 🧂
  • Salt tolerance:
  • doesn't tolerate 0% salt;
  • pH
  • Acidity tolerance:
  • tolerates pH 5.5; tolerates pH 9;
  • 🌡
  • Temperature tolerance:
  • grows at 28℃; grows at 37℃;
  • H+
  • Acid from carbohydrates usually produced:
  • D-turanose;
  • Active enzymes:
  • alkaline phosphatase; catalase; esterase C4; esterase lipase C8; β-galactosidase; α-glucosidase; urease;
    • SPECIAL FEATURES
    Character Response
    RESPONSE TO ANTIBIOTICS (Konate2020);
    Class Active Resistant
  • Penicillins:
  • amoxicillin; amoxicillin-clavulanic acid; imipenem; oxacillin; penicillin;
  • Macrolides:
  • erythromycin;
  • Tetracyclines:
  • doxycycline;
  • Quinolines:
  • ciprofloxacin;
  • Aminoglycosides:
  • gentamicin;
  • Polypep/ketides:
  • rifampicin;
  • Heterocycles:
  • fosfomycin;
  • metronidazole; trimethoprim-sulfamethoxazole;
  • Vancomycins:
  • vancomycin;
  • Miscellaneous antibiotics:
  • clindamycin;

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Firmicutes Class:  Bacilli Order:  Bacillales Family:  Bacillaceae Genus:  Halobacillus Gram stain:  + O2 Relation.:  strictly aerobic Spore:  No spore Motility:  Swimming Morphology:  Rod
    Health:  Unknown
    Source:  human faeces (healthy)
    DNA G+C(%):  41.1
    Lower T(℃):  28(+)
    Mid T(℃):  37(+)
    NaCl 0.5-2%:  0(neg)
    pH 4.2-5.9:  5.5(+)
    pH >8:  9(+)
    		Aesculin:  +
    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:  neg Fucose:  neg D-Fucose:  neg Galactose:  neg Glucose:  neg Mannose:  neg D-Lyxose:  neg Rhamnose:  neg Ribose:  neg Sorbose:  neg D-Tagatose:  neg Xylose:  neg L-Xylose:  neg Cellubiose:  neg Gentiobiose:  neg Lactose:  neg Maltose:  neg Melezitose:  neg Melibiose:  neg Sucrose:  neg Trehalose:  neg Turanose:  + Amygdalin:  neg Glycogen:  neg Inulin:  neg Starch:  neg Adonitol:  neg D-Arabitol:  neg L-Arabitol:  neg Dulcitol:  neg Erythritol:  neg Glycerol:  neg Inositol:  neg Mannitol:  neg Sorbitol:  neg Xylitol:  neg Arbutin:  neg Gluconate:  neg 2-Ketogluconate:  neg 5-Ketogluconate:  neg Me-α-D-Glc:  neg Me-α-D-Mann:  neg Me-Xyloside:  neg NAc-α-GA:  neg Salicin:  neg
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Oxidase:  neg Catalase:  + Urease:  + Ac-β-glcamnd:  neg α-Fucosidase:  neg α-Galactosidase:  neg β-Galactosidase:  + α-Glucosidase:  + β-Glucosidase:  neg β-Glucuronidase:  neg α-Mannosidase:  neg Chymotrypsin:  neg Trypsin:  neg CystineAA:  neg LeuAA:  neg ValAA:  neg AlkalineP:  + AcidP:  neg Esterase(C4):  + EstLip(C8):  + Lipase(C14):  neg
    ANTIBIOTICS ℞
    Penicillins & Penems (μg/mL) Cephalosporins (μg/mL) Aminoglycosides (μg/mL) Macrolides (μg/mL) Quinolones (μg/mL)
    amoxicillin:  Sens
    Augmentin:  Sens
    oxacillin:  Sens
    penicillin:  Sens
    imipenem:  Sens
    gentamicin:  Sens
    erythromycin:  Sens
    ciprofloxacin:  Sens
    Tetracyclines (μg/mL) Vancomycin Class (μg/mL) Polypep/ketides (μg/mL) Heterocycles (μg/mL) Other (μg/mL)
    doxycycline:  Sens
    vancomycin:  Sens
    rifampicin:  Sens
    fosfomycin:  Sens
    metronidazole:  Res
    SXT:  Res
    clindamycin:  Sens

    References

    SPECIFIC REFERENCES FOR HALOBACILLUS IHUMII
  • Konate2020 - Halobacillus ihumii sp. nov., a new bacterium isolated from stool of healthy children living in Mali.
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    • Added: April 09, 2023