Fig. 1.

A) 4 representations of the same Transcriptional Regulatory Network (TRN) made of 3 genes, which TF proteins bind to each other’s DNA binding motifs present in their DNA regulatory sequences. TF1 binds to the regulatory sequences of TF1 and TF2 coding genes. TF2 binds to the regulatory sequences of TF1, TF2 and TF3 coding genes. TF3 binds to the regulatory sequences of TF1 and TF3 coding genes. B) Data sets available to infer TRNs used in the research works described in this review, placed on the scheme of the gene expression steps of a Transcription Factor.