Taxonomy
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Phylum Actinobacteria, Class Actinobacteria , Order Micrococcales, Family Micrococcaceae, Genus Arthrobacter, Arthrobacter
woluwensis
Funke, Hutson, Bernard, Pfyffer, Wauters and Collins, 1997.
Gram-positive coryneform bacteria, mainly coccoid cells after 72 hours of incubation;
jointed rods are observed after 1-2 days of incubation. Nonmotile. Spores are not
produced.
Colonies are convex, smooth, whitish-grayish, larger than 2 mm in diameter and
slightly glistening after 24 h of incubation at 37 ºC in 5% CO
2 atmosphere, on 5%
sheep blood Columbia agar. Obligate aerobic. Does not express a cheese-like smell,
as observed  for the phenotypically closely related brevibacter.
Isolated from human clinical specimens (blood culture). Multiresistant, susceptible to tetracycline, teicoplanin and vancomycin.
Undetermined. Isolated from cultures of human blood.
  1. Funke G., von Graevenitz A., Clarridge III J.E., and Bernard K.A., 1997. Clinical Microbiology of Coryneform Bacteria. Clinical
    Microbiology Rewiews Vol. 10, No. 1, p. 125-159.
  2. Funke G ., 2006.Corynebacteria and rare coryneforms. In: Topley & Wilson’s Microbiology & Microbial Infections, 10th Edition,
    Edited by Borriello S.P., Murray P.R. and Funke G.,Edward Arnold (Publishers) Ltd., Bacteriology, volume 2.
  3. Funke G., Hutson R.A., Bernard K.A., Pfyffer G.E., Wauters G., and Collins M.D., 1996. Isolation of Arthrobacter spp. from Clinical
    Specimens and Description of Arthrobacter cumminsii sp. nov. and Arthrobacter woluwensis sp. nov.  J. Clin. Micobiol.  Vol. 34,
    No. 10, p. 2356-2363.
Positive results for acid phosphatase, alkaline phosphatase, catalase, cystine arylamidase, DNA hydrolysis (in 24 h), esculin
hydrolysis, esterase (C4), esterase lipase (C8), beta-galactosidase, alpha- and beta-glucosidase, gelatin hydrolysis (in 24 h), lipase
(C14), leucine arylamidase, alpha-mannosidase, N-acetyl-beta-glucosaminidase, trypsin, urease (in 72 h, weak reaction).

Negative results for chymotrypsin, alpha-fucosidase, alpha-galactosidase, beta-glucuronidase, nitrate reduction, acid production
from: glucose, maltose, mannitol, sucrose & xylose.
Arthrobacter woluwensis
(c) Costin Stoica
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