Table 1 Number of genes associated with general COG functional categories [55]

J

Translation, ribosomal structure and biogenesis

A

RNA processing and modification

K

Transcription

L

Replication, recombination and repair

B

Chromatin structure and dynamics

D

Cell cycle control, cell division, chromosome partitioning

V

Defense mechanisms

T

Signal transduction mechanisms

M

Cell wall/membrane biogenesis

N

Cell motility

U

Intracellular trafficking and secretion

O

Posttranslational modification, protein turnover, chaperones

C

Energy production and conversion

G

Carbohydrate transport and metabolism

E

Amino acid transport and metabolism

F

Nucleotide transport and metabolism

H

Coenzyme transport and metabolism

I

Lipid transport and metabolism

P

Inorganic ion transport and metabolism

Q

Secondary metabolites biosynthesis, transport and catabolism

R

General function prediction only

S

Function unknown

–

Not in COGs