Table 3

Breakdown of small functional categories of the KEGG modules
Pathway modules [203] Structural complex modules [263]
Small functional category Number (%) Small functional category Number (%)
Cofactor & vitamin biosynthesis 30 (14.6) Saccharide and polyol transport system 29 (11.0)
Carbon fixation 14 (6.8) ATP synthesis 27 (10.3)
Central carbohydrate metabolism 14 (6.8) Phosphotransferase system (PTS) 24 (9.1)
Lipid metabolism 14 (6.8) Mineral and organic ion transport system 23 (8.7)
Glycan metabolism 13 (6.3) Phosphate and amino acid transport system 19 (7.2)
Aromatic amino acid metabolism 11 (5.4) ABC-2 type and other transport systems 16 (6.1)
Methane metabolism 11 (5.4) Bacterial secretion system 14 (5.3)
Fatty acid metabolism 10 (4.9) RNA processing 13 (4.9)
Sterol biosynthesis 10 (4.9) Ubiquitin 13 (4.9)
Cystein & methionine metabolism 7 (3.4) Metallic cation, iron-siderophore and vitamin B12 transport system 12 (4.6)
Glycosaminoglycan metabolism 7 (3.4) Protein processing 9 (3.4)
Other carbohydrate metabolism 7 (3.4) Spliceosome 9 (3.4)
Polyamine biosynthesis 6 (2.9) Repair system 8 (3.0)
Telpenoid backbone biosynthesis 6 (2.9) DNA polymerase 7 (2.7)
Lysine metabolism 5 (2.4) Photosynthesis 7 (2.7)
Pyrimidine metabolism 5 (2.4) RNA polymerase 7 (2.7)
Akaloid & other secondardy metabolite 4 (1.9) Peptide and nickel transport system 6 (2.3)
LPS metabolism 4 (1.9) Replication system 6 (2.3)
Other terpenoid biosynthesis 4 (1.9) Carbohydrate metabolism 5 (1.9)
Arginine & proline metabolism 3 (1.5) Proteasome 5 (1.9)
BCAA metabolism 3 (1.5) Ribosome 3 (1.1)
Other amino acid metabolism 3 (1.5) Glycan metabolism 1 (0.4)
Phenylpropanoid & flavonoid biosyntesis 3 (1.5) Functional set modules [[4]]
Purine metabolism 3 (1.5) Small functional category Number (%)
Histidine metabolism 2 (1.0) Aminoacyl-tRNA 2 (50)
Metabolic capacity 2 (1.0) Nucleotide sugar 2 (50)
Serin & threonine metabolism 2 (1.0) Signature modules [[3]]
Nitrogen fixation 1 (0.5) Small functional category Number (%)
Sulfur metabolism 1 (0.5) Genotypic signature 3 (100)

[ ] shows total number of the KEGG modules containing branched modules.

Takami et al.

Takami et al. BMC Genomics 2012 13:699   doi:10.1186/1471-2164-13-699

Open Data