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

From: The complete genome sequence of the rumen methanogen Methanosarcina barkeri CM1

Code

Value

% of totala

Description

J

158

4.48

Translation

A

1

0.03

RNA processing and modification

K

112

3.18

Transcription

L

126

3.58

Replication, recombination and repair

B

2

0.06

Chromatin structure and dynamics

D

15

0.43

Cell cycle control, mitosis and meiosis

Y

-

-

Nuclear structure

V

76

2.16

Defense mechanisms

T

63

1.79

Signal transduction mechanisms

M

99

2.81

Cell wall/membrane biogenesis

N

16

0.45

Cell motility

Z

-

-

Cytoskeleton

W

-

-

Extracellular structures

U

18

0.51

Intracellular trafficking and secretion

O

96

2.72

Posttranslational modification, protein turnover, chaperones

C

223

6.33

Energy production and conversion

G

81

2.30

Carbohydrate transport and metabolism

E

221

6.27

Amino acid transport and metabolism

F

54

1.53

Nucleotide transport and metabolism

H

109

3.09

Coenzyme transport and metabolism

I

30

0.85

Lipid transport and metabolism

P

138

3.92

Inorganic ion transport and metabolism

Q

48

1.36

Secondary metabolites biosynthesis, transport and catabolism

R

368

10.44

General function prediction only

S

213

6.04

Function unknown

-

1256

35.67

Not in COGs

  1. aThe total is based on the total number of protein coding genes in the annotated genome