Table 2 Abundance of main metabolic pathways in KEGG level 2.

Global and overview maps

36,698,795

35,021,705

35,735,519

35,219,727

34,049,044

Carbohydrate metabolism

8,673,107

7,558,198

8,702,162

7,978,645

7,913,983

Amino acid metabolism

7,597,248

7,427,953

6,530,767

6,873,354

6,549,671

Energy metabolism

3,903,216

3,762,104

3,864,203

3,896,464

3,692,652

Metabolism of cofactors and vitamins

3,596,703

3,593,053

3,725,539

3,644,147

3,437,080

Membrane transport

3,095,153

2,889,293

4,447,515

3,345,208

3,489,770

Signal transduction

2,121,084

2,633,833

3,559,750

2,936,688

2,574,108

Cellular community—prokaryotes

2,174,308

2,191,543

2,868,655

2,456,078

2,299,346

Translation

2,226,147

2,217,846

1,952,172

2,197,749

2,362,025

Nucleotide metabolism

2,070,385

1,984,012

2,182,688

2,107,958

2,148,205

Replication and repair

2,075,040

2,131,660

1,947,021

2,067,261

2,188,123

Lipid metabolism

2,186,335

2,102,314

1,962,766

1,988,455

1,973,562

Xenobiotics biodegradation and metabolism

1,973,895

1,899,788

1,937,440

1,913,574

1,846,335

Metabolism of other amino acids

1,410,385

1,490,721

1,561,229

1,434,901

1,361,297

Biosynthesis of other secondary metabolites

1,509,132

1,382,209

1,173,759

1,245,861

1,187,638