Emergence of putative energy parasites within Clostridia revealed by genome analysis of a novel endosymbiotic clade.

"These three genomes formed a clade with metagenome-assembled genomes (MAGs) derived from the guts of other animals, including human and ruminants, and the MAGs shared the characteristics of parasites. Gene flux analysis suggested that the acquisition of the ATP/ADP translocase gene in a common ancestor was probably key to the emergence of this parasitic clade. [Extracted from the article]