Table 2

Basic graph properties

Reference

Non-parasites

Parasites

Random


Nodes

876

483 ± 52

287 ± 67

333 ± 8.6

Edges

1184

539 ± 79

278 ± 80

279 ± 7.0

Density

0.0031

0.0046 ± 0.0003

0.0070 ± 0.001

0.0049 ± 0.0002

Avg. Connectivity

2.7

2.2 ± 0.1

1.9 ± 0.1

1.7 ± 0.0

Max. Connectivity

18

11.3 ± 1.5

8.3 ± 0.7

7.2 ± 1.5

Avg. Path length

4.7

2.9 ± 0.44

1.2 ± 0.89

0.12 ± 0.07

Max. Path length (diameter)

24

25.6 ± 1.1

22.7 ± 7.1

15.4 ± 3.9

Global clustering coefficient

0.079

0.059 ± 0.009

0.039 ± 0.014

0.015 ± 0.006

Isolated edges

17

50 ± 9

51 ± 4

74 ± 6


Basic graph parameters (± standard deviation) of the reconstructed core metabolic networks, the randomly shrunk networks, and the reference network of all core metabolic reactions. Network density is the proportion of observed to total possible links, connectivity is the number of links per node, path length refers to the shortest distance connecting two nodes, and the global clustering coefficient is the number of closed triplets (triangles) over the total number of triplets.

Nerima et al. BMC Genomics 2010 11:217   doi:10.1186/1471-2164-11-217

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