Fig. 3
From: Discovery of the fourth mobile sulfonamide resistance gene
Collapsed phylogenetic tree of Sul4 and known chromosomal dihydropteroate synthase proteins from the NCBI RefSeq database excluding plasmid-born genes, along with proteins encoded by mobile sulfonamide resistance genes sul1, sul2, and sul3 from the CARD database. Branches are annotated with the accession number and the identified species name, with the phyla in bold. Collapsed clades are distinguished by red edges and the size of the blue bubbles corresponds to the number of proteins in the collapsed clade. The full version of the tree is available as an Additional file 9 in Newick format