Phylum Actinobacteria, Class Actinobacteria, Subclass Actibacteridae, Order Actynomycetales, Suborder Actinomycinae, Family
Actinomycetaceae, Genus Varibaculum, Varibaculum anthropi Glaeser, Doijad, Hijazin, Chakraborty, Falsen, Hall and Kampfer 2017.
Gram-positive short, straight or curved diphtheroid, rods. Non-motile. Non-acid-fast.
Colonies are convex, glistening, translucent white or gray, pinpoint after 2-3 days of
anaerobic incubation at 37 ºC on Columbia agar or fastidious anaerobe agar with 5%
horse blood. Strictly anaerobic.
Isolated from human urine.
- Glaeser S.P., Doijad S., Hijazin M., Chakraborty T., Falsen E., Hall V., and Kampfer P., 2016. Varibaculum anthropi sp. nov.
represented by three genetically different genomovars isolated from clinical material and emended description of the genus
Varibaculum. Syst Appl Microbiol 39(8) 546-552.
Description is based on API CORYNE and Rapid ID 32 A results.
Positive results for alpha-glucosidase, proline arylamidase, acid production from D-glucose and ribose.
Negative results for alkaline phosphatase, arginine dihydrolase, catalase, esculin hydrolysis, alpha-fucosidase, gelatin hydrolysis,
beta-glucosidase, beta-glucuronidase, N-acetyl-beta-glucosaminidase, indole production, pyrazinamidase, pyrrolidonyl arylamidase,
serine arylamidase, acid production from glycogen, mannose and raffinose.
Variable results for alpha- and beta-galactosidase, leucine arylamidase, nitrate reduction, urease, acid production from lactose,
maltose, mannitol, sucrose and D-xylose.
(c) Costin Stoica