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

J

142

11.1

Translation

A

1

0.1

RNA processing and modification

K

47

3.7

Transcription

L

67

5.2

Replication, recombination and repair

B

1

0.1

Chromatin structure and dynamics

D

22

1.7

Cell cycle control, mitosis and meiosis

Y

0

0

Nuclear structure

V

8

0.6

Defense mechanisms

T

27

2.1

Signal transduction mechanisms

M

110

8.6

Cell wall/membrane biogenesis

N

13

1.0

Cell motility

Z

0

0

Cytoskeleton

W

0

0

Extracellular structures

U

40

3.1

Intracellular trafficking and secretion

O

78

6.1

Posttranslational modification, protein turnover, chaperones

C

91

7.1

Energy production and conversion

G

63

4.9

Carbohydrate transport and metabolism

E

117

9.1

Amino acid transport and metabolism

F

44

3.4

Nucleotide transport and metabolism

H

92

7.2

Coenzyme transport and metabolism

I

40

3.1

Lipid transport and metabolism

P

45

3.5

Inorganic ion transport and metabolism

Q

16

1.3

Secondary metabolites biosynthesis, transport and catabolism

R

123

9.6

General function prediction only

S

95

7.4

Function unknown

-

246

17.3

Not in COGs