Figure 2
From: Convergent evolution of RFX transcription factors and ciliary genes predated the origin of metazoans
DBDs of RFX TFs are highly conserved. Representative DBDs from humans (hRFX1-7), C. elegans (DAF-19), D. melanogaster (dRFX), S. serevisiae (sRFX1), and M. brevicollis (Mbre_cRFX1 and Mbre_cRFX2). DBDs from different species show high similarity at the peptide level. Nine residues of DBD that directly contact DNA (indicated by arrows) are essentially identical for all RFX TFs.