| Helicobacter sp. strain CLO-3 |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Epsilonproteobacteria, Order Campylobacterales, Family Helicobacteraceae,
Genus Helicobacter, Helicobacter sp. strain CLO-3 Fennell et al. (1984).
Three CLO groups were described. The groups CLO-1 and CLO-2 were later formally classified as Campylobacter species by
Totten et al. (1985), and reclassified as Helicobacter cinaedi and Helicobacter fennelliae, respectively, by Vandamme et al.
Characterization of CLO-3 group is based on a single strain description.
Genus Helicobacter, Helicobacter sp. strain CLO-3 Fennell et al. (1984).
Three CLO groups were described. The groups CLO-1 and CLO-2 were later formally classified as Campylobacter species by
Totten et al. (1985), and reclassified as Helicobacter cinaedi and Helicobacter fennelliae, respectively, by Vandamme et al.
Characterization of CLO-3 group is based on a single strain description.
Slender spiral rods, 0.3–0.5 x 1.5–5.0 μm. Motile by means of a single, polar, sheathed
flagellum; rapid corkscrew-like moving. Single curved, S-shaped, and straight rods are
occasionally seen. Coccoid forms develop in old cultures.
flagellum; rapid corkscrew-like moving. Single curved, S-shaped, and straight rods are
occasionally seen. Coccoid forms develop in old cultures.
Colonies of 48 h old cultures are pinpoint and translucent. On freshly prepared or
moist media, or in older cultures, growth usually occurs as a flat and spreading zone
with a blue-gray hue and discreet colonies may be rare. No distinct odor. No growth in
aerobic or anaerobic conditions. Can grow at 42 ºC, not at 25 ºC.
Grows in 1% glycine, but not in 2% NaCl. Grows on media containing 0.04% triphenyl-
tetrazolium chloride (metallic red sheen colonies are produced).
moist media, or in older cultures, growth usually occurs as a flat and spreading zone
with a blue-gray hue and discreet colonies may be rare. No distinct odor. No growth in
aerobic or anaerobic conditions. Can grow at 42 ºC, not at 25 ºC.
Grows in 1% glycine, but not in 2% NaCl. Grows on media containing 0.04% triphenyl-
tetrazolium chloride (metallic red sheen colonies are produced).
Isolated from homosexual male.
Undetermined.
- George M. Garrity, Julia A. Bell and Timothy Lilburn, 2001. Family II. Helicobacteraceae. In: Bergey’s Manual of Systematic
Bacteriology, Second edition, Vol 2, part C, George M. Garrity (Editor-in-Chief), pp 1168-1195. - Dewhirst (F.E.), Seymour (C.), Fraser (G.J.), Paster (B.J.) and Fox (J.G.): Phylogeny of Helicobacter isolates from bird and swine
feces and description of Helicobacter pametensis sp. nov. Int. J. Syst. Bacteriol., 1994, 44, 553-560. - Vandamme (P.), Falsen (E.), Rossau (R.), Hoste (B.), Segers (P.), Tytgat (R.) and De Ley (J.): Revision of Campylobacter,
Helicobacter, and Wolinella taxonomy: emendation of generic descriptions and proposal of Arcobacter gen. nov. Int. J. Syst.
Bacteriol., 1991, 41, 88-103.
Positive results for alkaline phosphatase, catalase and indoxyl acetate hydrolysis (weak).
Negative results for nitrate reduction, gamma glutamyl transpeptidase and urease.
Negative results for nitrate reduction, gamma glutamyl transpeptidase and urease.
(c) Costin Stoica
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