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Table 3 Comparisons between fish and human metabolic pathways

From: Constructing a fish metabolic network model

Most conserved pathways

Pathway

Human ECs

Fish ECs

Overlap

Ratio

1- and 2-Methylnaphthalene degradation

2

3

2

1

Hyaluronan metabolism

3

3

3

1

Sialic acid metabolism

18

18

18

1

Hexose phosphorylation

5

5

5

1

Electron transport chain

4

5

4

1

Limonene and pinene degradation

3

4

3

1

Proteoglycan biosynthesis

16

16

16

1

Glycosphingolipid biosynthesis - ganglioseries

18

17

17

0.94

N-Glycan degradation

8

7

7

0.87

Di-unsaturated fatty acid beta-oxidation

7

6

6

0.85

Vitamin B1 (thiamin) metabolism

7

6

6

0.85

Glycosphingolipid metabolism

28

24

24

0.85

Glutamate metabolism

14

12

12

0.85

TCA cycle

18

15

15

0.83

Vitamin B9 (folate) metabolism

17

14

14

0.82

Linoleate metabolism

11

9

9

0.81

Least conserved pathways

Pathway

Human ECs

Fish ECs

Overlap

Ratio

Phytanic acid peroxisomal oxidation

13

5

5

0.38

Glycosylphosphatidylinositol(GPI)-anchor biosynthesis

3

1

1

0.33

Vitamin H (biotin) metabolism

6

2

2

0.33

Vitamin B12 (cyanocobalamin) metabolism

3

2

1

0.33

Glyoxylate and Dicarboxylate metabolism

7

2

2

0.28

Pentose and Glucuronate interconversions

9

2

2

0.22

Ascorbate (vitamin C) and aldarate metabolism

8

1

1

0.12

  1. The ratio is the number of shared ECs over the number of human ECs. Only pathways with three or more enzymes were considered. The complete comparison is given in Additional file 9. Please see Discussion section on the bias towards human data. The sizes of fish pathways may grow with improved annotation, but this is unlikely to change the ratios because all overlapping enzymes are already included here.