Neisseria flava

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

Overview

  • Neisseria flava is a Gram-negative, non-spore-forming, aerobic, non-motile, diplococci bacterium. It has been detected in at least 2 gut microbiome compilation studies or metastudies. The DNA G+C content is 49%. Neisseria flava is probably a rare gut coloniser. (Barrett1994)



  • This organism has been recovered from human faeces, oropharynx and nasopharynx. The risk classification (www.baua.de) for this organism is 1, i.e., low risk of infection and spread (notes: opportunistic in immunocompromised patients). Can cause opportunistic infections, particularly in immunocompromised people. A possible gut commensal.
    • GENERAL CHARACTERISTICS (Barrett1994);
    Character Response
  • 🌡
  • Temperature tolerance:
  • grows at 37℃; Grows optimally at 35-37℃.
  • H+
  • Acid from carbohydrates usually produced:
  • fructose; glucose; maltose;
  • ±
  • Strain-dependent acid from carbs:
  • sucrose;
  • ⥅
  • Substrates assimilated or utilised:
  • fructose; glucose; maltose; cysteine; glutamate; isoleucine; phenylalanine; proline; lactate; glutamine;
  • Active enzymes:
  • Ala arylamidase; Ala-Phe-Pro arylamidase; carbonic anhydrase; catalase; Gly arylamidase; oxidase; Phe arylamidase; Pro arylamidase; Ser arylamidase; Tyr arylamidase;
    • SPECIAL FEATURES (Barrett1994);
    Character Response
  • ✓
  • Metabolites produced:
  • ammonia;
  • ✗
  • Metabolites not produced:
  • indole;
  • ±
  • Nitrate:
  • strain dependent
  • ✓
  • Nitrite:
  • reduced

  • Bik, E. M., Eckburg, P. B., Gill, S. R., Nelson, K. E., Purdom, E. A., Francois, F., Perez-Perez, G., Blaser, M. J., & Relman, D. A. (2006). Molecular analysis of the bacterial microbiota in the human stomach. Proceedings of the National Academy of Sciences of the United States of America, 103(3), 732–737.

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Proteobacteria Class:  Betaproteobacteria Order:  Neisseriales Family:  Neisseriaceae Genus:  Neisseria Gram stain:  neg O2 Relation.:  aerobic Spore:  No spore Motility:  Sessile Morphology:  Diplococci
    Health:  Unknown
    Source:  human faeces, oropharynx and nasopharynx
    DNA G+C(%):  49
    Opt. T:  35-37℃
    Mid T(℃):  37(+)
    		Urea:  neg Gelatin:  neg Starch:  neg DNA:  neg Hippurate:  neg Tween:  neg
    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:  + Fucose:  neg Galactose:  neg Glucose:  + Mannose:  neg D-Lyxose:  neg Rhamnose:  neg Ribose:  neg Sorbose:  neg L-Sorbose:  neg D-Tagatose:  neg L-Xylose:  neg Cellubiose:  neg Lactose:  neg Maltose:  + Melezitose:  neg Melibiose:  neg Sucrose:  d Trehalose:  neg Turanose:  neg Amygdalin:  neg Dextrin:  neg Aesculin:  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 2-Ketogluconate:  neg 5-Ketogluconate:  neg Me-α-D-Glc:  neg Me-α-D-Mann:  neg NAc-α-GA:  neg Salicin:  neg
    SUBSTRATE ASSIMILATION & UTILISATION
    Monosaccharide util/assim Oligosaccharide util/assim Other carboh. util/assim Amino acid util/assim Organic acid util/assim
    Fructose:  + Glucose:  + Lactose:  neg Maltose:  + Sucrose:  neg Cys:  + Glu:  + Ile:  + Phe:  + Pro:  + Lactate:  +
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Oxidase:  + Catalase:  + Urease:  neg Carbonic anh.:  + α-Arab:  neg Ac-β-glcamnd:  neg α-Fucosidase:  neg α-Galactosidase:  neg β-Galactosidase:  neg α-Glucosidase:  neg β-Glucosidase:  neg β-Glucuronidase:  neg α-Mannosidase:  neg Chymotrypsin:  neg OrnDC:  neg Phe deaminase:  neg Trypsin:  neg AlanineAA:  + AlaPheProAA:  + CystineAA:  neg GluGluAA:  neg GlyTrpAA:  neg GlyAA:  + HisAA:  neg ProAA:  + PheAA:  + PyrogluAA:  neg SerAA:  + TyrAA:  + ValAA:  neg AlkalineP:  neg AcidP:  vr DNAse:  neg Esterase:  neg Esterase(C4):  neg EstLip(C8):  neg Lipase:  neg Lipase(C14):  neg
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		Ammonia:  + Indole:  neg

    References

    SPECIFIC REFERENCES FOR NEISSERIA FLAVA
  • Barrett1994 - A numerical phenotypic taxonomic study of the genus Neisseria.
  • ...............................
    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR NEISSERIA FLAVA
  • Bik2006 - Molecular analysis of the bacterial microbiota in the human stomach.
  • RajilicStojanovic2014 - The first 1000 cultured species of the human gastrointestinal microbiota.
  • ...............................
    • Added: April 08, 2021