Phylum Actinobacteria, Class Actinobacteria, Subclass Actibacteridae, Order Actynomycetales, Suborder Corynebacterinae, Family
Corynebacteriaceae, Genus Corynebacterium, Corynebacterium propinquum Riegel, De Briel, Prevost, Jehl and Monteil 1994.
Historical synonyms: CDC coryneform group ANF-3.
Gram-positive, typical corynebacterial forms.
Colonies are matted surface, 1-2 mm in diameter after 24 h of incubation at 37 ºC on
sheep blood agar. Hemolysis is not produced. CAMP reaction is negative.
Isolated mainly from respiratory tract specimens. Susceptible to beta-lactam antibiotics.
It has not been described as a causative agent of lower respiratory tract infections so far.
- 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.
- 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.
Positive results for nitrate reduction & tyrosine hydrolysis.
Negative results for esculin hydrolysis, lipophilism, acid production from: glucose, maltose, mannitol, sucrose & xylose.
Variable results for alkaline phosphatase, pyrazinamidase & urease.
(c) Costin Stoica