%0 Journal Article %A Lawson, Paul A. %A Falsen, Enevold %A Ã…kervall, Eva %A Vandamme, Peter %A Collins, Matthew D. %T Characterization of Some Actinomyces-Like Isolates from Human Clinical Specimens: Reclassification of Actinomyces suis (Soltys and Spratling) as Actinobaculum suis comb. nov. and Description of Actinobaculum schaalii sp. nov. %D 1997 %J International Journal of Systematic and Evolutionary Microbiology, %V 47 %N 3 %P 899-903 %@ 1466-5034 %R https://doi.org/10.1099/00207713-47-3-899 %I Microbiology Society, %X Abstract Five strains of a hitherto unknown Actinomyces-like bacterium were isolated from human clinical sources, including blood cultures. Biochemical and chemotaxonomic characterization indicated that the strains were distinct from previously described Actinomyces and Arcanobacterium species. A comparative 16S rRNA gene sequence analysis demonstrated that the undescribed strains constitute a new subline within the Actinomyces-Arcanobacterium species complex. The closest known relative of the isolates was found to be Actinomyces suis, although a 16S rRNA sequence divergence value of approximately 6% clearly demonstrated that the unknown bacterium represents a distinct species. Based on the results of the present and earlier phylogenetic investigations, it is proposed that Actinomyces suis should be reclassified in a new genus, the genus Actinobaculum, as Actinobaculum suis comb. nov. In addition, a new species, Actinobaculum schaalii, is proposed for the Actinomyces-like bacterium from human sources. The type strain of Actinobaculum schaalii is CCUG 27420. %U https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/00207713-47-3-899