Complex I. Phylogenetic distribution across 60 fungal species of Complex I subunits. Absences of a corresponding ortholog in a given species is indicated with a blank square or a crossed green square. Crossed green squares indicate that no ortholog was found but at least one paralog is present. Presence of orthologs is indicated with uncrossed green squares. The different colour intensities correspond to the number of homologs of the query protein found in that specific genome. The species are ordered according to their phylogenetic position in the fungal species tree .