FIG 2.

Phylogenetic tree comparing predicted e-pilins and e-archaellins from various bacteria and archaea inferred using the maximum likelihood method and JTT matrix-based model (75). An initial tree(s) for the heuristic search was obtained by applying neighbor-joining and BioNJ algorithms to a matrix of pairwise distances estimated using the JTT model and then selecting the topology with superior log likelihood value. The tree is drawn to scale, with branch lengths measured in the number of substitutions per site. This analysis involved 92 amino acid sequences. Evolutionary analyses were conducted in MEGA X (76).