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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Helicobacter felis
Category: Motile
Etymology: Genus name: a helix shaped rod.
Species epithet: of the cat
Significance:  [Of minor importance]   
Taxonomy:
Phylum
Campylobacterota
Class
Campylobacteria
Order
Campylobacterales
Family
Helicobacteraceae 
Genus
Helicobacter
Type Strain: CS1 = ATCC 49179 = NCTC 12436.
Macromorphology (smell): Forms pinpoint colonies after 3 days on serum enriched agar medium.
Micromorphology: Tightly coiled helical rods (0.4 x 7.5 µm) with 14-20 bipolar flagella.
Gram +/Gram -:G-
Metabolism: Microaerophilic, but some strains can grow anaerobically.
Catalase/Oxidase:+/+
Other Enzymes: Urease +
Fermentation of carbohydrates: Helicobacter spp. can neither ferment nor oxidize carbohydrates. Exception: H. pylori, which can oxidize glucose to acetate.
Spec. Char.:
Disease:
Hosts: Dog, cat.
Clinical Picture:
16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
M57398 ATCC 49179T 1474  

Taxonomy/phylogeny:
 
About 35 species have been described within the genus Helicobacter, and this genus is most closely related to Campylobacter, Arcobacter and Sulfurospirillum. H. felis is closely related to H. bizzozeroni and H. salomonis.
Updated:2023-03-22

News

New names of bacterial phyla

The taxonomic category phylum was previously not regulated by the International Code of Nomenclature of Prokaryotes (ICNP), but now this has changed and it was decided to revise the names of bacterial phyla. All phyla must be written in italics (which has been done on VetBact also before) and have the ending -ota.

Published 2023-03-01. Read more...
The taxonomy of chlamydias

Species within the family Chlamydiaceae were previously divided into two genera Chlamydia and Chlamydophila. However, the differences between these two genera were not that great and many research groups have not accepted this division. Therefore, the genus Chlamydophila has been returned to the genus Chlamydia and this change has now been incorporated in VetBact

Published 2023-03-15. Read more...

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