Figure 2
From: Insights into the evolution of sialic acid catabolism among bacteria
Structure of the Nan clusters among bacterial groups. Unless otherwise indicated all the members from a family shown share a common canonical structure of the Nan cluster, with differences only in the number of ORFs between the genes (indicated by a number within each cluster). nanA, orange arrows; nanK, green arrows; nanE, blue arrows. Enterobacteriaceae (A): E. coli, S. enterica, S. typhimurium, S. boydii, S. dysenteriae, S. flexneri, S. sonnei; Enterobacteriaceae (B): All species from genus Yersinia; Streptococcaceae (A) S. agalactiae, S. gordonii, S. pneumoniae (cluster A), (B) S. pyogenes, S. sanguinis, S. pneumoniae (cluster B).