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. 2012 Sep 27;7(1):31–43. doi: 10.4056/sigs.2976373

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

Code      Value      % age      Description
J      181      5.26      Translation, ribosomal structure and biogenesis
A      1      0.03      RNA processing and modification
K      289      8.4      Transcription
L      119      3.46      Replication, recombination and repair
B      2      0.06      Chromatin structure and dynamics
D      31      0.9      Cell cycle control, cell division and chromosome partitioning
Y      0      0      Nuclear structure
V      22      0.64      Defense mechanisms
T      254      7.38      Signal transduction mechanisms
M      157      4.56      Cell wall/membrane/envelope biogenesis
N      97      2.82      Cell motility
Z      0      0.0      Cytoskeleton
W      0      0.0      Extracellular structures
U      75      2.18      Intracellular trafficking, secretion and vesicular transport
O      129      3.75      Post-translational modification, protein turnover, chaperones
C      175      5.09      Energy production and conversion
G      239      6.95      Carbohydrate transport and metabolism
E      366      10.64      Amino acid transport and metabolism
F      77      2.24      Nucleotide transport and metabolism
H      165      4.8      Coenzyme transport and metabolism
I      109      3.17      Lipid transport and metabolism
P      195      5.67      Inorganic ion transport and metabolism
Q      86      2.5      Secondary metabolites biosynthesis, transport and catabolism
R      372      10.81      General function prediction only
S      299      8.69      Function unknown
-      589      16.13      Not in COGs