Figure 2.

Distribution of the genes conserved in all the leaf nodule symbionts in functional categories of COGs. For each COG category, the number of functional genes (gray bars) and the total number of genes including pseudogenes (black bars) were compared. (J)=translation, ribosomal structure and biogenesis; (K)=transcription; (L)=DNA replication, recombination and repair; (D)=cell division and chromosome partitioning; (O)=posttranslational modification, protein turnover, chaperones; (M)=cell envelope biogenesis, outer membrane; (N)=cell motility and secretion/Intracellular trafficking and secretion; (P)=inorganic ion transport and metabolism; (T)=signal transduction mechanisms; (C)=energy production and conversion; (G)=carbohydrate transport and metabolism; (E)=amino-acid transport and metabolism; (F)=nucleotide transport and metabolism; (H)=coenzyme metabolism; (I)=lipid metabolism; (Q)=secondary metabolites biosynthesis, transport and catabolism; (R)=general function prediction only; (S)=function unknown.