The distinction of CPR bacteria from other bacteria based on protein family content.

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ID: 44329
2019
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Abstract
Candidate phyla radiation (CPR) bacteria separate phylogenetically from other bacteria, but the organismal distribution of their protein families remains unclear. Here, we leveraged sequences from thousands of uncultivated organisms and identified protein families that co-occur in genomes, thus are likely foundational for lineage capacities. Protein family presence/absence patterns cluster CPR bacteria together, and away from all other bacteria and archaea, partly due to proteins without recognizable homology to proteins in other bacteria. Some are likely involved in cell-cell interactions and potentially important for episymbiotic lifestyles. The diversity of protein family combinations in CPR may exceed that of all other bacteria. Over the bacterial tree, protein family presence/absence patterns broadly recapitulate phylogenetic structure, suggesting persistence of core sets of proteins since lineage divergence. The CPR could have arisen in an episode of dramatic but heterogeneous genome reduction or from a protogenote community and co-evolved with other bacteria.
Reference Key
mheust2019thenature Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Méheust, Raphaël;Burstein, David;Castelle, Cindy J;Banfield, Jillian F;
Journal Nature communications
Year 2019
DOI
10.1038/s41467-019-12171-z
URL
Keywords
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