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The ProQ/FinO domain-containing proteins are widespread in Proteobacteria. Shown are the phylogenetic analysis of ProQ/FinO domain-containing proteins (see also Dataset S1 and Fig. S5) and the maximum likelihood phylogenetic tree of the 674 protein sequences containing a ProQ/FinO domain found in 2,775 complete prokaryotic proteomes (80 amino acid positions were used). Colors correspond to taxonomic main lineages.
