Figure 3From: Evolution of electron transfer out of the cell: comparative genomics of six Geobacter genomesNeighbor-joining phylogeny of the large subunit of the four-subunit hydrogenase. This enzyme is specific to the Geobacter species of the subsurface clade, there are no orthologs in other Geobacter species. NCBI identification numbers of homologs and bootstrap values from 1000 replicates are shown.Back to article page