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Table 1 Comparison of the extracellular proteins of R. etli; identified in the exponential growth phase (6 h) and the stationary growth phase (24 h)

From: The extracellular proteome of Rhizobium etli CE3 in exponential and stationary growth phase

COGs

prot 6 h

(%)

prot 6 h (SP)

(%)

prot 24 h

(%)

prot 24 h

(SP)

(%)

Energy production and conversion (C)

9.8

1.0

3.1

-

Cell cycle control, cell division, chromosome partitioning (D)

0.5

-

0.5

-

Amino acid transport and metabolism (E)

6.7

1.0

7.3

4.7

Nucleotide transport and metabolism (F)

1.0

-

-

-

Carbohydrate transport and metabolism (G)

7.7

1.0

7.9

4.1

Coenzyme transport and metabolism (H)

1.5

-

0.5

-

Lipid transport and metabolism (I)

1.0

-

0.5

-

Translation, ribosomal structure and biogenesis (J)

22.3

-

6.3

-

Transcription (K)

3.1

-

3.1

-

Replication, recombination and repair (L)

3.6

-

5.2

0.5

Cell wall, membrane, envelope biogenesis (M)

5.1

1.5

7.3

3.7

Cell motility (N)

3.6

1.5

2.0

0.5

Posttranslational modification, protein turnover, chaperones (O)

8.8

1.0

6.8

1.0

Inorganic ion transport and metabolism (P)

3.1

0.5

5.7

3.7

Secondary metabolites biosynthesis, transport and catabolism (Q)

2.6

0.5

0.5

-

General function prediction only (R)

2.0

-

3.6

1.6

Function unknown (S)

3.6

1.5

28.8

11.0

Signal transduction mechanisms (T)

3.1

1.0

1.0

-

Intracellular trafficking, secretion, and vesicular transport (U)

4.1

0.5

1.5

1.6

Defense mechanisms (V)

1.5

-

1.0

-

Without COG (WC)

4.1

1.5

6.2

3.1

Total protein

192

25

191

68

  1. The proteins were grouped in functional groups (COGs). The relative contribution to each COG of proteins with a potential signal peptide (SP) is indicated. Functional groups with a major abundance in proteins are shown in bold letters and numbers.