Aerobe. Can grow at 27 and 37 ºC, but not at  43 ºC. Grows at pH 6.0, but not at pH
8.0. Grows in 1% NaCl, but not in 2% NaCl. Weak beta-hemolysis.
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Betaproteobacteria, Order Neisseriales, Family Neisseriaceae, Genus Simonsiella, Simonsiella
mueller
i Schmid 1922 - type species of the genus.

Old synonym:
Caryophanon muelleri (Schmid 1922) Peshkoff 1948, Scheibenbakterien Müller 1911.
Gram-negative cell wall. Grouped in multicellular filaments. The long axis of the cells
(width of filament) varies from 2.5 to 3.5 μm, with an average of about 2.5-3.2 μm; the
short axis (length of individual cell) varies from 0.7 to 0.9 μm, with an average of about
0.8 μm. Gliding motility.
Isolated from the oral cavity of humans.
Undetermined.
  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.
Some results are based on API ZYM test.

Positive results for catalase, oxidase, acid production from: fructose, glucose, malonate & maltose.

Negative results for alkaline phosphatase, arginine dihydrolase, casein hydrolysis, esculin hydrolysis,
hippurate hydrolysis, gelatin
hydrolysis, glutamyltransferase, indole production, lysine decarboxylase, omithine decarboxylase, ONPG, starch hydrolysis,  urease,
alpha-fucosidase, lipase (C14), alpha-chymotrypsin, alpha- and beta-galactosidase, beta-glucuronidase, N-acetyl-beta-
glucosaminidase, alpha-mannosidase, trypsin, acid production from: arabinose, adonitol, dulcitol, dextrose, esculin, galactose,
lactose, mannitol, mannose, raffinose, rhamnose, ribose, salicin, sorbose, sucrose, trehalose & xylose.

Variable results for H
2S production, nitrate reduction & nitrite reduction.
Simonsiella muelleri
(c) Costin Stoica
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