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. 2011 Dec 30;5(3):398–406. doi: 10.4056/sigs.2344929

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

Code     value    %age       Description
J     168    4.7       Translation, ribosomal structure and biogenesis
A     3    0.1       RNA processing and modification
K     211    5.9       Transcription
L     276    7.7       Replication, recombination and repair
B     1    0.0       Chromatin structure and dynamics
D     48    1.3       Cell cycle control, cell division, chromosome partitioning
Y     0    0.0       Nuclear structure
V     70    2.0       Defense mechanisms
T     208    5.8       Signal transduction mechanisms
M     266    7.4       Cell wall/membrane/envelope biogenesis
N     56    1.6       Cell motility
Z     0    0.0       Cytoskeleton
W     0    0.0       Extracellular structures
U     102    2.9       Intracellular trafficking, secretion, and vesicular transport
O     162    4.5       Posttranslational modification, protein turnover, chaperones
C     289    8.1       Energy production and conversion
G     127    3.6       Carbohydrate transport and metabolism
E     210    5.9       Amino acid transport and metabolism
F     59    1.7       Nucleotide transport and metabolism
H     143    4.0       Coenzyme transport and metabolism
I     82    2.3       Lipid transport and metabolism
P     196    5.5       Inorganic ion transport and metabolism
Q     58    1.6       Secondary metabolites biosynthesis, transport and catabolism
R     407    11.4       General function prediction only
S     437    12.2       Function unknown
-     1,319    28.7       Not in COGs