Phylum Proteobacteria, Class Epsilonproteobacteria, Order Campylobacterales, Family Helicobacteraceae, Genus Helicobacter,
Helicobacter heilmannii Smet et al. 2012.
Historical synonyms: Helicobacter heilmannii Solnick et al. 1993 type 2, Candidatus Helicobacter heilmannii O'Rourke et al. 2004.
Gram-negative tightly coiled spirals with up to nine turns,3.0-6.5 x 0.6-0.7 μm. No
periplasmic fibrils are observed. Motile by means of tufts of up to 10 sheathed blunt-
ended flagella at both ends of the cells. Nonsporulated. Coccoid cells appear in old
Grow on BHI agar, on Brucella agar and on Mueller–Hinton agar supplemented with
20% fetal calf serum or 10% defibrinated horse blood. Can form colonies on dry agar
plates. Microaerophilic. Weak growth in anaerobic incubation. Growth is detected at
37 ºC, but not at 25 or 42 ºC. No growth on media supplemented with 1% bile, 1.5%
NaCl or 1% glycine.
Isolated from the gastric mucosa of cat.
- A. Smet, B. Flahou, K. D’Herde, P. Vandamme, I. Cleenwerck, R. Ducatelle, F. Pasmans, and F. Haesebrouck. Helicobacter
heilmannii sp. nov., isolated from feline gastric mucosa. Int J Syst Evol Microbiol February 2012 62:299-306.
Positive results for L-arginine arylamidase, catalase, oxidase, triphenyl-tetrazolium chloride reduction, nitrate reduction, hippurate
hydrolysis, esterase, gamma-glutamyltransferase & urease.
Negative results for alkaline phosphatase, L-aspartate arylamidase, indoxyl acetate hydrolysis & pyrrolidonyl arylamidase.
(c) Costin Stoica