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. 2014 Mar 29;9(3):1062–1075. doi: 10.4056/sigs.5661021

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

Code     Value     %age     Description
J     139     4.46     Translation, ribosomal structure and biogenesis
A     -     -     RNA processing and modification
K     143     4.59     Transcription
L     118     3.79     Replication, recombination and repair
B     3     0.10     Chromatin structure and dynamics
D     30     0.96     Cell cycle control, mitosis and meiosis
Y     -     -     Nuclear structure
V     46     1.48     Defense mechanisms
T     121     3.89     Signal transduction mechanisms
M     143     4.59     Cell wall/membrane biogenesis
N     19     0.61     Cell motility
Z     -     -     Cytoskeleton
W     -     -     Extracellular structures
U     26     0.83     Intracellular trafficking and secretion
O     88     2.83     Posttranslational modification, protein turnover, chaperones
C     225     7.23     Energy production and conversion
G     162     5.20     Carbohydrate transport and metabolism
E     224     7.19     Amino acid transport and metabolism
F     75     2.41     Nucleotide transport and metabolism
H     131     4.21     Coenzyme transport and metabolism
I     128     4.11     Lipid transport and metabolism
P     136     4.37     Inorganic ion transport and metabolism
Q     37     1.19     Secondary metabolites biosynthesis, transport and catabolism
R     326     10.47     General function prediction only
S     245     7.87     Function unknown
-     649     20.84     Not in COGs