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Table 1 KEGG Functional Categories. Top level KEGG functional classes, with the number of genes in each class. (Jan. 2004)

From: A Regression-based K nearest neighbor algorithm for gene function prediction from heterogeneous data

Index

Class name

Size

1

Carbohydrate Metabolism

245

2

Energy Metabolism

163

3

Lipid Metabolism

45

4

Nucleotide Metabolism

114

5

Amino Acid Metabolism

231

6

Lipid Metabolism

67

7

Metabolism of Complex Carbohydrates

96

8

Metabolism of Complex Lipids

59

9

Metabolism of Cofactors and Vitamins

169

10

Biosynthesis of Secondary Metabolites

24

11

Biodegradation of Xenobiotics

50

12

Transcription

73

13

Translation

106

14

Folding, Sorting and Degradation

51

15

Replication and Repair

87

16

Membrane Transport

409

17

Signal Transduction

92

19

Immune System

4

20

Cell Motility

59