Fig. 4: Maximum-likelihood phylogenetic trees of nitrogen-fixing MAGs and their NifH protein sequences.
From: Phylogenetically and catabolically diverse diazotrophs reside in deep-sea cold seep sediments
a Phylogenomic analysis of 35 MAGs containing nitrogen fixation genes. This maximum-likelihood tree is based on concatenation of 43 conserved protein sequences. MAGs are colored based on their phylogenetic affiliation at the phylum level. b Phylogenetic analysis of identified NifH protein sequences and genomic context of corresponding nif genes in the same 35 MAGs with nitrogen fixation genes. The scale bar represents one amino acid substitution per sequence position. For both trees, bootstrap values of >70% are indicated as black circles at the nodes, and scale bars indicate the mean number of substitutions per site.
