Phylum Actinobacteria, Class Actinobacteria, Order Micrococcales, Family Dermabacteraceae, Genus Dermabacter, Dermabacter
vaginalis Chang, Rhee and Kim, 2016.
Gram-positive short rods, 0.6-0.8 / 0.9-1.1 µm. Non-motile. Non-spore-forming.
Mycolic acids are not present.
Colonies are creamy- white, low-convex, 1-2 mm in diameter on DSM 92 agar at 37 ºC
after 2 days of incubation. CAMP test is negative. Facultative anaerobic. Grows at 37
ºC, optimum. Can grow in 0-8% NaCl media, 0.5% NaCl optimum; pH 7 optimum.
Isolated from human vaginal fluid.
- Chang D.H., Rhee M.S. and Kim B.C., 2016. Dermabacter vaginalis sp. nov., isolated from human vaginal fluid. Int. J. Syst. Evol.
Microbiol. 66, 1881-1886.
Non-acid fast. Fermentative metabolism.
Some tests' description is based on API Coryne, API ZYM, and API 50CH results.
Positive results for casein hydrolysis, catalase, citrate utilization, DNA hydrolysis, esculin hydrolysis, esterase (C4), esterase lipase
(C8), gelatin hydrolysis, alpha-galactosidase (weak), beta-galactosidase, alpha- and beta-glucosidase, beta-glucuronidase, N-acetyl-
beta-glucosaminidase, lecithinase, leucine arylamidase, lysine decarboxylase, alpha-mannosidase, ornithine decarboxylase,
pyrolidonyl arylamidase, starch hydrolysis, trypsin, acid production from: amygdalin, cellobiose, fructose, galactose, gentiobiose,
glucose, glycerol, lactose, maltose, D-mannose, melezitose, melibiose, D-raffinose, ribose, sucrose, trehalose & D-turanose.
Negative results for acid phosphatase, cellulose hydrolysis, alpha-chymotrypsin, cysteine arylamidase, alpha-fucosidase, hippurate
hydrolysis, lipase (C14), nitrate reduction, oxidase, pyrazinaminidase, tyrosine hydrolysis, urease, Voges-Proskauer test, valine
arylamidase, xanthine hydrolysis, acid production from: adonitol, arabinose, arabitol, arbutin, erythritol, N-acetylglucosamine, fucose,
glycogen, gluconate, inositol, inulin, mannitol, rhamnose, salicin, sorbitol, tagatose, xylitol & xylose.
Variable results for H2S production, alkaline phosphatase (+/API Coryne, -/API ZYM).
(c) Costin Stoica