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. 2011 Sep 23;5(1):135–143. doi: 10.4056/sigs.2094859

Table 4. Number of genes associated with the 25 general COG functional categories.

Code    Value    %agea     Description
J    130    7.12     Translation
K    53    2.9     Transcription
L    84    4.6     Replication, recombination and repair
D    21    1.15     Cell cycle control, mitosis and meiosis
V    14    0.77     Defense mechanisms
T    79    4.33     Signal transduction mechanisms
M    108    5.91     Cell wall/membrane biogenesis
N    58    3.18     Cell motility
U    52    2.85     Intracellular trafficking and secretion
O    73    4     Posttranslational modification, protein turnover, chaperones
C    116    6.35     Energy production and conversion
G    50    2.74     Carbohydrate transport and metabolism
E    128    7.01     Amino acid transport and metabolism
F    52    2.85     Nucleotide transport and metabolism
H    87    4.76     Coenzyme transport and metabolism
I    34    1.86     Lipid transport and metabolism
P    66    3.61     Inorganic ion transport and metabolism
Q    14    0.77     Secondary metabolites biosynthesis, transport and catabolism
R    153    8.38     General function prediction only
S    89    4.87     Function unknown
-    365    19.99     Not in COGs

a) The total is based on the total number of protein coding genes in the annotated genome.