FIG 1.

Maximum-likelihood phylogenetic tree of archaeal genomes based on 16 concatenated ribosomal proteins. This tree was inferred using IQ-TREE v1.6.10 applying ModelFinder (-m option) to select the best-fit evolutionary model, which is LG+R8 model and 1,000 ultrafast bootstraps. The Sifarchaeota MAGs recovered in this study are highlighted in red. Lineages of the Asgard superphylum are expanded, while the other lineages were collapsed, if possible. The bar shows estimated sequence substitutions per residue.