Fig. 5

Phylogenetic analysis of the genomes of the well-defined pathogenic, non-pathogenic, and the probiotic E. faecalis strains with the TK-P4B: a Phylogenetic tree of E. faecalis genome sequences based on analysis of core genes, and classification of strains are grouped into probiotic (green circle), non-pathogenic (red triangle), probiotic isolate evaluated in this study (purple star), and the outgroup (gray circle) groups; b PCA analysis of E. faecalis genome sequences based on presence or absence of mobile elements, and genes responsible for virulence factors, toxic metabolites and antibiotic resistance, and classification of strains are grouped into probiotic (green circle), non-pathogenic (red triangle), probiotic isolate evaluated in this study (purple star)