Skip to main content

Table 4 Number of genes associated with general COG functional categories

From: Genome sequences of two closely related strains of Escherichia coli K-12 GM4792

Code

Valueb

% agea,b

Valuec

% agea,c

Description

J

258

6.35

259

6.41

Translation, ribosomal structure and biogenesis

A

2

0.05

2

0.05

RNA processing and modification

K

335

8.25

337

8.34

Transcription

L

160

3.94

160

3.96

Replication, recombination and repair

B

0

0.00

0

0.00

Chromatin structure and dynamics

D

50

1.23

50

1.24

Cell cycle control, cell division, chromosome partitioning

Y

0

0.00

0

0.00

Nuclear structure

V

107

2.63

107

2.65

Defense mechanisms

T

251

6.18

250

6.18

Signal transduction mechanisms

M

286

7.04

285

7.05

Cell wall/membrane/envelope biogenesis

N

116

2.86

114

2.82

Cell motility

Z

0

0.00

0

0.00

Cytoskeleton

W

38

0.94

36

0.89

Extracellular structures

U

63

1.55

61

1.51

Intracellular trafficking, secretion, and vesicular transport

O

171

4.21

170

4.20

Posttranslational modification, protein turnover, chaperones

X

31

0.76

31

0.77

Mobilome: prophages, transposons

C

317

7.81

316

7.82

Energy production and conversion

G

437

10.76

438

10.83

Carbohydrate transport and metabolism

E

397

9.78

397

9.82

Amino acid transport and metabolism

F

108

2.66

108

2.67

Nucleotide transport and metabolism

H

189

4.65

188

4.65

Coenzyme transport and metabolism

I

133

3.28

133

3.29

Lipid transport and metabolism

P

263

6.48

260

6.43

Inorganic ion transport and metabolism

Q

77

1.90

77

1.90

Secondary metabolites biosynthesis, transport and catabolism

R

319

7.86

321

7.94

General function prediction only

S

216

5.32

210

5.19

Function unknown

-

469

11.55

463

11.45

Not in COGs

  1. aThe total is based on the total number of protein coding genes in the genome
  2. bThe genome statistics for GM4792 Lac+
  3. cThe genome statistics for GM4792 Lac-