ABSTRACT
We report on a new
Actinobaculum
species, “
Actinobaculum massiliae
,” isolated from the urine of an elderly woman with recurrent cystitis. Its phenotypic pattern was similar to those of both of the other
Actinobaculum
species described to date. On 16S rRNA sequencing, the Marseille isolate shared 95% homology with
Actinobaculum suis
, 92 to 93% homology with
Actinobaculum schaalii
, 91 to 92% homology with
Arcanobacterium
spp., and 87 to 90% homology with
Actinomyces
species. A bootstrap value of 99% supports the node separating the
Actinobaculum
sp. from its closest neighbor (
A. suis
). In conclusion, on the basis of phenotypic, genotypic, and phylogenetic assessments, we show that the Marseille isolate is a previously unrecognized organism within the
Actinobaculum
genus, and we propose placement of the organism in the taxon “
Actinobaculum massiliae
.”