Topological parameter Swine spermatozoa capacitation Swine spermatozoa capacitation without “actin polymerization”
Connected components 1 6
Number of nodes 153 152
Number of edges 208 199
Clustering coefficient 0.028 0.028
Network diameter 20 20
Shortest paths 8177 (35%)  
Characteristic path length 6.540 6.621
Averaged number of neighbours 2.654 2.566
In-degree distribution    
γ -1.530 -1.473
r 0.990 0.988
R2 0.862 0.884
Out-degree distribution    
γ -1.942 -2.159
r 0.995 0.996
R2 0.818 0.882
Avg. Clustering Coefficient Distribution    
γ -0.486 -0.448
r 0.215 0.162
R2 0.249 0.207
The value of connected components measures the number of networks obtained; the number of nodes represent the total number of molecules involved; the number of edges represents the total number of interaction found; the clustering coefficient is calculated as CI = 2nI / k(k −1) where nI is the number of links connecting the kI neighbours of node I to each other; the network diameter is the largest distance between two nodes; shortest paths is the measure of the number (and percentage) of shortest path within the network; the Average n° neighbours represent the mean number of connection of each node; the Char. path length gives the expected distance between two connected nodes; γ represent the exponent of power law y = ax, r is the correlation coefficient, R2 the coefficient of determination of power law.
Table 6: Main topological parameters of boar spermatozoa capacitation before and after removal of “actin polymerization” node.