helicobacter brantae helicobacter brantae helicobacter brantae is a bacterium in the helicobacteraceae family, campylobacterales order. it is gram-negative, microaerophilic, spiral to curve-shaped, being first isolated from the faeces of geese. helicobacter brantae scientific classification domain: bacteria phylum: campylobacterota class: "campylobacteria" order: campylobacterales family: helicobacteraceae genus: helicobacter species: h. brantae binomial name helicobacter brantaefox et al. 2006