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Table 3 COG classifications of the core genomes of L. lactis, L. lactis subsp. lactis and L. lactis subsp. cremoris

From: Comparative and functional genomics of the Lactococcus lactis taxon; insights into evolution and niche adaptation

COG classification

 

Unique core genomes

L. lactis core genome

L. lactis subsp. lactis

L. lactis subsp. cremoris

Translation, ribosomal structure and biogenesis

10%

<1%

5%

Transcription

8%

11%

9%

Replication, recombination and repair

6%

3%

6%

Cell cycle control, cell division, chromosome partitioning

1%

<1%

<1%

Defence mechanisms

1%

4%

3%

Signal transduction mechanisms

2%

2%

2%

Cell wall/membrane/envelope biogenesis

5%

4%

4%

Cell motility

<1%

1%

1%

Intracellular trafficking, secretion, and vesicular transport

1%

<1%

2%

Posttranslational modification, protein turnover, chaperones

4%

1%

<1%

Energy production and conversion

4%

4%

3%

Carbohydrate transport and metabolism

7%

14%

10%

Amino acid transport and metabolism

9%

15%

5%

Nucleotide transport and metabolism

5%

1%

1%

Coenzyme transport and metabolism

4%

2%

2%

Lipid transport and metabolism

3%

3%

3%

Inorganic ion transport and metabolism

6%

4%

3%

Secondary metabolites biosynthesis, transport and catabolism

2%

1%

2%

General function prediction only

14%

6%

10%

Function unknown

10%

23%

27%

  1. Bold rows indicate those were a significant difference exists within the unique core genomes