Skip to main content
. 2011 Dec 23;5(3):269–278. doi: 10.4056/sigs.1854551

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

Code    Value    %agea     Description
J    142    6.8     Translation
A    0    0     RNA processing and modification
K    77    3.7     Transcription
L    93    4.5     Replication, recombination and repair
B    2    0.1     Chromatin structure and dynamics
D    20    1.0     Cell cycle control, mitosis and meiosis
Y    0    0     Nuclear structure
V    16    0.8     Defense mechanisms
T    41    2.0     Signal transduction mechanisms
M    142    6.8     Cell wall/membrane biogenesis
N    41    2.0     Cell motility
Z    0    0     Cytoskeleton
W    0    0     Extracellular structures
U    40    1.9     Intracellular trafficking and secretion
O    89    4.3     Posttranslational modification, protein turnover, chaperones
C    149    7.1     Energy production and conversion
G    126    6.0     Carbohydrate transport and metabolism
E    250    12.0     Amino acid transport and metabolism
F    58    2.8     Nucleotide transport and metabolism
H    117    5.6     Coenzyme transport and metabolism
I    113    5.4     Lipid transport and metabolism
P    70    3.4     Inorganic ion transport and metabolism
Q    78    3.7     Secondary metabolites biosynthesis, transport and catabolism
R    271    13.0     General function prediction only
S    155    7.4     Function unknown
-    503    21.2     Not in COGs

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