Schematic representation of the 252 bp from the first to the last C moiety of the studied region of the myogenin 5′-flanking. Annotations regarding C numbering (both according to Genebank and progressive), sub-clusters (with gray background) and putative recognition sites of the CTCF, Sp1, Rreb1, Nfe2I2, Snai1 and Cebpb DNA binding transcription factors are shown.