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. 2011 Feb 20;4(1):13–22. doi: 10.4056/sigs.1453580

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

Code    value     %age     Description
J    169     4.5     Translation, ribosomal structure and biogenesis
A    2     0.1     RNA processing and modification
K    382     10.1     Transcription
L    174     4.6     Replication, recombination and repair
B    1     0.0     Chromatin structure and dynamics
D    41     1.1     Cell cycle control, cell division, chromosome partitioning
Y    0     0.0     Nuclear structure
V    68     1.8     Defense mechanisms
T    270     7.2     Signal transduction mechanisms
M    159     4.2     Cell wall/membrane/envelope biogenesis
N    2     0.1     Cell motility
Z    2     0.1     Cytoskeleton
W    0     0.0     Extracellular structures
U    38     1.0     Intracellular trafficking and secretion, and vesicular transport
O    134     3.6     Posttranslational modification, protein turnover, chaperones
C    256     6.8     Energy production and conversion
G    193     5.1     Carbohydrate transport and metabolism
E    292     7.7     Amino acid transport and metabolism
F    78     2.1     Nucleotide transport and metabolism
H    161     4.3     Coenzyme transport and metabolism
I    265     6.8     Lipid transport and metabolism
P    160     4.2     Inorganic ion transport and metabolism
Q    181     4.8     Secondary metabolites biosynthesis, transport and catabolism
R    511     13.5     General function prediction only
S    243     6.4     Function unknown
-    1,787     35.3     Not in COGs