General Information: Candidatus Amoebophilus asiaticus 5a2 is an obligate endosymbiont found in Acanthamoeba sp. TUMSJ-321. This organism is a member of the highly diverse bacterial phylum Bacteroidetes which includes the endosymbiont lineages represented by the sister taxa Candidatus A. asiaticus and Candidatus Cardinium hertigii, a symbiont of arthropods.