Table 1 The number of n-controller metabolite interactions that exist in or are possible for each model

# of 1-controller interactions

1

3

5

25

# of possible 1-controller interactions

5

9

12

39

# of 2-controller interactions

2

3

10

13

# of possible 2-controller interactions

20 (25)

54 (81)

157 (262)

243 (668)

# of 3-controller interactions

2

3

5

2

# of possible 3-controller interactions

20 (50)

108 (324)

520 (2720)

336 (5384)

# of 4-controller interactions

N/A

N/A

2

4

# of possible 4-controller interactions

N/A

N/A

380 (17,860)

480 (27,120)