Table 6 Cluster of Orthologous Groups (COG) functional classes. Abbreviations for Fig. 8

A

RNA processing and modification

B

Chromatin structure and dynamics

C

Energy production and conversion

D

Cell cycle control /cell division / chromosome partitioning

E

Amino acid transport and metabolism

F

Nucleotide transport and metabolism

G

Carbohydrate transport and metabolism

H

Coenzyme transport and metabolism

I

Lipid transport and metabolism

J

Translation / ribosomal structure and biogenesis

K

Transcription

L

Replication / recombination, and repair

M

Cell wall/membrane/envelope biogenesis

N

Cell motility

O

Posttranslational modification / protein turnover/ chaperones

P

Inorganic ion transport and metabolism

Q

Secondary metabolites biosynthesis, transport, and catabolism

R

General function prediction only

S

Function unknown

T

Signal transduction mechanisms

U

Intracellular trafficking / secretion, and vesicular transport

V

Defense mechanisms

W

Extracellular structures

Y

Nuclear structure

Z

Cytoskeleton