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Table 3 Functional classification of 100 conserved and 100 lost COGs

From: Massive comparative genomic analysis reveals convergent evolution of specialized bacteria

COG description

Code

Conserved

Lost

Chromatine structure and dynamics

B

0

0

Replication, recombination and repair

L

9

1

Transcription

K

6

5*

Rna processing and modification

A

0

0

Translation, ribosomal structure and biogenesis

J

69

3

Information storage and processing

 

84

9

Posttranslational modification, protein turnover, chaperones

O

6

11*

Intracellular trafficking, secretion, and vesicular transport

U

3

0

Signal transduction mechanisms

T

0

12*

Cell cycle control, cell division, chromosome partitioning

D

0

1

Defense mechanisms

V

0

0

Cell wall/membrane/envelope biogenesis

M

2

6

Cell motility

N

0

8*

Cellular processes and signaling

 

11

38

Nucleotide transport and metabolism

F

2

0

Amino acid transport and metabolism

E

0

17*

Carbohydrate transport and metabolism

G

0

1*

Lipid transport and metabolism

I

0

2*

Coenzyme transport and metabolism

H

0

7

Inorganic ion transport and metabolism

P

0

8

Secondary metabolites biosynthesis, transport and catabolism

Q

0

3*

Energy production and conversion

C

0

8

Metabolism

 

2

46

General function prediction only

R

3

10

Function unknown

S

0

7

Poorly characterized

 

3

17

  1. *Some of the COGs in the corresponding functional category belong to other categories as well.