Table 1. Number of interactions in the stringent and nonstringent networks.

Network type	No. of PPIs*	No. of TRIs
Stringent network	1,832 interactions between 1,385 proteins	1,351 interactions between 128 transcription factors and 591 target genes
Nonstringent network	6,159 interactions between 3,617 proteins	6,254 interactions between 160 transcription factors and 2,698 target genes

^*This number does not include the 177 and 235 self-interactions that are present in the stringent and the nonstringent data sets, correspondingly.