Fig. 3

COG functional classification of the N. officinale transcripts. A total of 16,530 transcripts (23.74% of total) were annotated and divided into 26 subcategories. a RNA processing and modification; b Chromatin Structure and dynamics; c Energy production and conversion; d Cell cycle control, cell division, chromosome partitioning; e Amino acid transport and metabolism; f Nucleotide transport and metabolism; g Carbohydrate transport and metabolism; h Coenzyme transport and metabolism; i Lipid transport and metabolism; j Translation, ribosomal structure and biogenesis; k Transcription; l Replication, recombination and repair; m Cell wall/membrane/envelope biogenesis; n Cell motility; o Post-translational modification, protein turnover, chaperones; p Inorganic ion transport and metabolism; q Secondary metabolite biosynthesis, transport and catabolism; r General functional prediction only; s Function unknown; t Signal transduction mechanisms; u Intracellular trafficking, secretion, and vesicular transport; v Defense mechanisms; w Extracellular structures; x Phage-derived proteins, transposases and other mobilized components; y Nuclear structure; z Cytoskeleton