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Table 3 CRC stool metabolite numbers within each of the assigned metabolic pathways

From: Metabolomics and metabolic pathway networks from human colorectal cancers, adjacent mucosa, and stool

Metabolic pathway

Number of metabolites

Amino acid

102

 Alanine and aspartate

5

 Glutamate

4

 Glutathione

1

 Glycine, serine, and threonine

6

 Histidine

5

 Leucine, isoleucine, and valine

17

 Lysine

8

 Methionine, cysteine, SAM, and taurine

9

 Phenylalanine and tyrosine

23

 Polyamine

6

 Tryptophan

10

 Urea cycle; arginine and proline

8

Carbohydrate

27

 Aminosugar

6

 Disaccharides and oligosaccharides

2

 Fructose, mannose, and galactose

4

 Glycogen

1

 Glycolysis, gluconeogenesis, and pyruvate

3

 Pentose

11

Cofactors and vitamins

20

 Ascorbate and aldarate

1

 Hemoglobin and porphyrin

5

 Nicotinate and nicotinamide

4

 Pantothenate and CoA

1

 Riboflavin

2

 Tetrahydrobiopterin

1

 Thiamine

2

 Tocopherol

3

 Vitamin B6

1

Energy

7

 Oxidative phosphorylation

1

 TCA cycle

6

Lipid

142

 Carnitine metabolism

3

 Endocannabinoid

2

 Fatty acid

56

 Fatty alcohol, long chain

2

 Glycerolipid

2

 Inositol

2

 Ketone bodies

1

 Lysolipid

16

 Monoacylglycerol

8

 Phospholipid

1

 Primary bile acid

6

 Secondary bile acid

12

 Sphingolipid

4

 Steroid

9

 Sterol

7

Nucleotide

25

 Purine and pyrimidine

1

 Purine metabolism

5

 (Hypo) xanthine/inosine containing

2

 Purine metabolism, adenine containing

4

 Purine metabolism, guanine containing

1

 Pyrimidine metabolism, cytidine containing

1

 Pyrimidine metabolism, orotate containing

4

 Pyrimidine metabolism, thymine containing

7

 Pyrimidine metabolism, uracil containing

 

Peptide

106

 Dipeptide

99

 Gamma-glutamyl amino acid

4

 Polypeptide

3

Xenobiotics

71

 Benzoate

4

 Chemical

13

 Drug

10

 Food component/plant

33

 Xanthine

11