Beta-
hemolysis
Nitrate
reduction
Nitrite
reduction
Gas from
nitrite
H2S
production
K. kingae
+
-
-
-
d
K. denitrificans
-
+
+
+
-
K. oralis
-
-
d
-
+
K. potus
-
-
-
-
nd
Differential characters of Kingella species:
Colonies are circular, low convex, yellow-pigmented, smooth, entire, approximately 1.5 to 2 mm in diameter, and friable on Columbia
blood agar after 48 h of incubation at 37 ºC. Colonies are nonhemolytic. Nondiffusible yellow pigments are produced. Aerobic.
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Betaproteobacteria, Order Neisseriales, Family Neisseriaceae, Genus Kingella, Kingella potus
Lawson et al. 2005.
Gram-negative rods. Nonmotile. Endospores are not formed.
Isolated from the human wound caused by a kinkajou (Potos flavus) bite.
Susceptible to ampicillin, amoxicillin, co-amoxiclav, penicillin, cefotaxime, ciprofloxacin, ceftriaxone, imipenem, and meropenem.
Resistant to erythromycin, clarithromycin, clindamycin, gentamicin, tetracycline, chloramphenicol, and trimethoprim.
Isolated from an infected wound.
  1. Tone Tonjum, 2005. Order IV. Neisseriales ord. nov. In:  Bergey’s Manual of Systematic Bacteriology, Second edition, Vol two, part C
    The Alpha-, Beta-, Delta-, and Epsilonproteobacteria, George M. Garrity (Editor-in-Chief), pp 774-863.
  2. Paul A. Lawson, Henry Malnick, Matthew D. Collins, Jayesh J. Shah, Marie A. Chattaway, Richard Bendall, and John W. Hartley:
    Description of Kingella potus sp. nov., an Organism Isolated from a Wound Caused by an Animal Bite. J. Clin. Microbiol. July 2005
    43:7 3526-3529; doi:10.1128/JCM.43.7.3526-3529.2005.
  3. Dewhirst F, Chen C, Paster B, Zambon: Phylogeny of Species in the Family Neisseriaceae Isolated from Human Dental Plaque and
    Description of Kingella orale sp. nov. J. Int J Syst Evol Microbiol 43(3):490-499.
Positive results for casein hydrolysis, DN-ase, gamma-glutamyltransferase & oxidase.

Negative results for alkaline phosphatase, arginine dehydrolase, catalase, esculin hydrolysis, alpha-glucosidase, beta-galactosidase,
beta-glucuronidase indole production, lysine decarboxylase, nitrate reduction, nitrite reduction, ornithine decarboxylase, Tween 80
hydrolysis, tyrosine, urease, acid production from: fructose, glucose, lactose, mannose, mannitol, maltose & sucrose.
Kingella potus
(c) Costin Stoica
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Yellow
pigment
DN-ase
activity
Phosphatase
activity
Glucose
fermentation
Maltose
fermentation
K. kingae
-
-
+
+
+
K. denitrificans
-
d
-
+
-
K. oralis
-
nd
+
+
-
K. potus
+
+
-
-
-
Legend:  + positive 90-100%, - negative 90-100%, [+] positive 75-89%, [-] negative 75-89%, d positive 25-74% of strains, nd unknown