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Table 1 Functional classes of genes

From: Sugar Lego: gene composition of bacterial carbohydrate metabolism genomic loci

Functional class

Enzyme EC number

Number of genes

Cassette propensity

Transcriptional

Not applicable

39,136

35,29%

Transport

Not applicable

29,701

70,83%

Glycosyltransferase

2.4.1.

14,579

62,30%

Glycosidase

3.2.1.

11,475

64,74%

Kinase

2.7.1.; 2.7.9

9250

57,95%

Isomerase

5.3.1.

6458

55,20%

Dehydrogenase-OH

1.1.

5518

57,67%

Decarboxylase

4.1.

2788

58,97%

Nucleotidyltransferase

2.7.7.; 2.7.8

2125

70,96%

Dehydratase

4.2.

2091

52,75%

Phosphatase

3.1.3.

2036

37,77%

Epimerase

5.1.3.

1753

61,78%

Deacetylase

3.5.1.

1525

51,02%

Transaldolase/transketolase

2.2.1.

1514

70,54%

Mutase

5.4.2.

1502

40,35%

Carboxylic-esterase

3.1.1.

1153

63,49%

Dehydrogenase-O

1.2.

781

69,78%

Nucleosidase

3.2.2.

597

23,28%

Malto-oligosyltrehalose synthase

5.4.99

100

93,00%

  1. Functional classes of carbohydrate metabolism genes (assigned according to the Enzyme Nomenclature classification obtained from the IMG database [14]), number of genes in each class, and their tendency towards localization within carbohydrate metabolism cassettes (cassette propensity)