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Phylum Actinobacteria, Class Actinobacteria, Order Micrococcales, Family Micrococcaceae, Genus Pseudarthrobacter,
Pseudarthrobacter equi
(Yassin, Sproer, Siering, Hupfer and Schumann, 2011) Busse 2016.

Historical synonym:
Arthrobacter equi Yassin, Sproer, Siering, Hupfer and Schumann, 2011.
Description is based on a single isolated strain.
Gram-positive small coryneform bacteria. Nonmotile. Spores are not produced.
Colonies are cream, convex, smooth, 1-2 mm in diameter after 48 h of incubation at
34 ºC on Columbia blood agar, BHI agar and TSA. Aerobic. No growth at:  37 ºC. Can
grow at 0-2 % NaCl, and in pH 6.0-9.0 (6.0 optimum).
Isolated from a genital swab of a horse.
Undetermined.
  1. Yassin A.F., Sproer C., Siering C., Hupfer H. and Schumann P., 2011. Arthrobacter equi sp. nov., isolated from veterinary clinical
    material. IJSEM 61, 2089-2094.
  2. Busse H.J., 2016. Review of the taxonomy of the genus Arthrobacter, emendation of the genus Arthrobacter sensu lato, proposal
    to reclassify selected species of the genus Arthrobacter in the novel genera Glutamicibacter gen. nov., Paeniglutamicibacter gen.
    nov., Pseudoglutamicibacter gen. nov., Paenarthrobacter gen. nov. and Pseudarthrobacter gen. nov., and emended description of
    Arthrobacter roseus. IJSEM 66, 9-37.
Positive results for casein hydrolysis, catalase, DNA hydrolysis (in 2 days), hippurate
hydrolysis, gelatin hydrolysis, beta-galactosidase, alpha-glucosidase, leucine
arylamidase, beta-glucuronidase, pyrazinamidase, starch hydrolysis (in 3 days)
& tyrosine hydrolysis.

Negative results for acid phosphatase, alkaline phosphatase, cystine arylamidase, chymotrypsin, esculin hydrolysis, esterase (C4),  
esterase lipase (C8), alpha-fucosidase, alpha-galactosidase, beta-glucosidase, N-acetyl-beta-glucosaminidase, lipase,
alpha-mannosidase, nitrate reduction, oxidase, pyrrolidonyl arylamidase, trypsin, urease, valine arylamidase, Voges-Proskauer test,
acid production from: glucose, glycogen, lactose, maltose, mannitol, ribose, sucrose & xylose.
Pseudarthrobacter equi
(c) Costin Stoica
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