Fig. 5: Summary of genomic evidence for parasitism and predation.
From: Hyperactive nanobacteria with host-dependent traits pervade Omnitrophota
a, Systems related to symbiosis in Omnitrophota genomes. Circles correspond to occurrence in each class, with lighter-shaded circles indicating <50% of species in the class encoding the system. b, Phylogeny of homologues of ‘tight-adherence’ apparatus intermembrane platform protein TadC. The highlighted clade indicates a cluster of homologues from Omnitrophota genomes. The characterized TadC from Halobacteriovorax marinus is indicated with a red point. c, Phylogeny of F-type ATP synthase subunit α. Highlighted clades indicate Omnitrophota proteins putatively involved in chemiosmotic ATP synthesis (‘Respiratory’ or ‘Symbiotic’). Putative ‘symbiotic’ ATPase gene clusters in Omnitrophota genomes are typically co-located with type-4a pilus gene clusters as in Mycoplasma genomes. Tips corresponding to the biochemically characterized respiratory homologue from Waddlia chondrophila and the pathogenesis-related homologue from Mycoplasma mobile are represented with blue and red points, respectively. d, Phylogeny of ATP/ADP translocase homologues. The light-blue highlighted clade represents homologues Omnitrophota. The red clade represents homologues from Flavobacteriaceae, including Croceibacter atlanticus. The red point represents a homologue from W. chondrophila, blue from ‘Ca. Babela massiliensis’ and brown from the Omnitrophota species P. frigidipaludosa. e, Illustration of the largest ORF from the class Omnitrophia, which encodes domains possibly involved in adhesion.
