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. 2010 Dec 15;3(3):304–314. doi: 10.4056/sigs.1273360

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

Code    value    % age     Description
J    146    5.8     Translation, ribosomal structure and biogenesis
A    0    0.0     RNA processing and modification
K    152    6.1     Transcription
L    124    5.0     Replication, recombination and repair
B    1    0.0     Chromatin structure and dynamics
D    27    1.1     Cell cycle control, cell division, chromosome partitioning
Y    0    0.0     Nuclear structure
V    43    1.7     Defense mechanisms
T    140    5.6     Signal transduction mechanisms
M    161    6.4     Cell wall/membrane/envelope biogenesis
N    21    0.8     Cell motility
Z    0    0.0     Cytoskeleton
W    0    0.0     Extracellular structures
U    61    2.4     Intracellular trafficking, secretion, and vesicular transport
O    69    2.8     Posttranslational modification, protein turnover, chaperones
C    244    9.7     Energy production and conversion
G    151    6.0     Carbohydrate transport and metabolism
E    245    9.8     Amino acid transport and metabolism
F    73    2.9     Nucleotide transport and metabolism
H    134    5.4     Coenzyme transport and metabolism
I    72    2.9     Lipid transport and metabolism
P    104    4.2     Inorganic ion transport and metabolism
Q    38    1.5     Secondary metabolites biosynthesis, transport and catabolism
R    311    12.4     General function prediction only
S    190    7.6     Function unknown
-    759    25.0     Not in COGs