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. 2013 Apr 15;8(1):69–87. doi: 10.4056/sigs.3627141

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

Code    Value    %agea    Description
J    148    5.32    Translation
A    0    0.00    RNA processing and modification
K    184    6.61    Transcription
L    207    7.44    Replication, recombination and repair
B    2    0.07    Chromatin structure and dynamics
D    60    2.16    Cell cycle control, mitosis and meiosis
Y    0    0.00    Nuclear structure
V    35    1.26    Defense mechanisms
T    177    6.36    Signal transduction mechanisms
M    122    4.38    Cell wall/membrane biogenesis
N    79    2.84    Cell motility
Z    2    0.07    Cytoskeleton
W    0    0.00    Extracellular structures
U    75    2.69    Intracellular trafficking and secretion
O    81    2.91    Posttranslational modification, protein turnover, chaperones
C    261    9.38    Energy production and conversion
G    106    3.81    Carbohydrate transport and metabolism
E    197    7.08    Amino acid transport and metabolism
F    55    1.98    Nucleotide transport and metabolism
H    158    5.68    Coenzyme transport and metabolism
I    89    3.20    Lipid transport and metabolism
P    127    4.56    Inorganic ion transport and metabolism
Q    122    3.58    Secondary metabolites biosynthesis, transport and catabolism
R    331    11.89    General function prediction only
S    257    9.23    Function unknown
-    1,065    29.38    Not in COGs