Hafnia paralvei

(aka Hafnia alvei genomosp. 2)

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

Overview

  • Hafnia paralvei, (aka Hafnia alvei genomosp. 2), is a Gram-negative, non-spore-forming, facultatively anaerobic, motile, rod-shaped bacterium. It has been detected in at least 2 gut microbiome compilation studies or metastudies. The DNA G+C content is 49.8%. Hafnia paralvei is probably a rare gut coloniser. (Huys2010)



  • This organism has been recovered from human faeces and clinical sources (blood, urine - CCUG). It is an opportunistic pathogen. A possible gut commensal.
    • GENERAL CHARACTERISTICS (Huys2010);
    Character Response
  • 🌡
  • Temperature tolerance:
  • Grows optimally at 28-37℃.
  • H+
  • Acid from carbohydrates usually produced:
  • D-arabinose; L-arabinose; glucose; xylose; maltose; trehalose; glycerol; mannitol;
  • Active enzymes:
  • β-galactosidase; lycine decarboxylase; ornithine decarboxylase;
    • SPECIAL FEATURES (Huys2010);
    Character Response
  • ✗
  • Metabolites not produced:
  • H₂S; indole;
  • ±
  • VP test:
  • active for most strains
  • ✓
  • Nitrate:
  • reduced
  • ✗
  • Pigments:
  • not produced

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Proteobacteria Class:  Gammaproteobacteria Order:  Enterobacterales Family:  Hafniaceae Genus:  Hafnia Alt. name:  Hafnia alvei genomosp. 2 Gram stain:  neg O2 Relation.:  facultatively anaerobic Spore:  No spore Motility:  Swimming Morphology:  Rod Pigment:  neg
    Health:  Unknown
    Source:  human faeces and clinical sources (blood, urine - CCUG)
    DNA G+C(%):  49.8
    Opt. T:  28-37℃
    		Aesculin:  neg Gelatin:  neg DNA:  neg
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    D-Arabinose:  d(+) L-Arabinose:  + Glucose:  + Xylose:  + Lactose:  neg Maltose:  + Melibiose:  neg Sucrose:  neg Trehalose:  + Amygdalin:  neg Adonitol:  neg D-Arabitol:  neg Dulcitol:  neg Glycerol:  + Inositol:  neg Mannitol:  + 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
    Malonate:  neg
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Oxidase:  neg β-Galactosidase:  d(+) β-Glucosidase:  neg ArgDH:  neg LysDC:  + OrnDC:  + Phe deaminase:  neg Lipase:  neg
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		H2S:  neg Indole:  neg Pigment:  neg

    References

    SPECIFIC REFERENCES FOR HAFNIA PARALVEI
  • Huys2010 - Hafnia paralvei sp. nov., formerly known as Hafnia alvei hybridization group 2.
  • ...............................
    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR HAFNIA PARALVEI
  • Byrd2020 - Stability and dynamics of the human gut microbiome and its association with systemic immune traits.
  • Yang2020 - Species-Level Analysis of Human Gut Microbiota With Metataxonomics.
  • Yang2020a - Establishing high-accuracy biomarkers for colorectal cancer by comparing fecal microbiomes in patients with healthy families
  • ...............................
    • Added: December 15, 2021