Table 1

Characteristics which differentiate non-gastric Helicobacter species

Susceptibility to
TaxonCatalase productionNitrate reductionAlkaline phosphatase hydrolysisUreaseIndoxyl acetate hydrolysisγ Glutamyl transpeptidaseGrowth at 42°CGrowth with 1% glycineNalidixic acid (30 μg disc)Cephalothin (30 μg disc)Peri-plasmic fibresNo of flagellaDistribution of flagellaG+C content (mol%)
+, positive reaction; −, negative reaction; S, susceptible; R, resistant; I, intermediate; ND, not determined; G+C.guanine plus cytosine.
H canadensis ++−−+−++RR−2BipolarND
H rodentium ++−−−−++RR−2BipolarND
H pullorum ++−−−ND+NDRS−1Monopolar34–35
H fennelliae +−+−+−−+SS−2Bipolar35
H trogontum ++−+ND++NDRR+5–7BipolarND
H muridarum +−++++−−RR+10–14Bipolar34
H hepaticus ++ND++ND−+RR−2BipolarND
H canis −−+−+ND+NDSI−2Bipolar48
H bilis ++ND+−ND++RR+3–14BipolarND
“H rappini”+−−+ND++−RR+10–20Bipolar34
H cinaedi ++−−−−−+SI−1–2Bipolar37–38
H westmeadii +++−NDND−ND+−−1BipolarND
H pametensis +++−−−++SS−2Bipolar38
H winghamensis −−−−+ND−NDSS−1–2BipolarND
H mesocricatorum +++−ND−ND−SR−2BipolarND
H aurati +−−++++−SR+7–10BipolarND
H typhlonius ++/−−−−−++SR−1BipolarND
H cholecystus ++−−−−++IR−2BipolarND
H trogontum ++−+ND++NDRR+5–7BipolarND