Fig 5. Proportion of CDs shared between different families.

In order to identify companion domains (CDs) that are common to more than one family of TFs each of the CDs associated to TF families was compared against the other families. Only domains that were identified as enriched were plotted as a heat map (upper section), in which 0 represents absence and 1.0 represents 100% of CDs in common with two or more families.