Figure 1: Genomic structure of S. chuatsi myogenin gene which contains 3 exons separated by 2 introns. The conserved basic Helix-loop-helix domain is located in the exon 1. The two putative E-boxes, the MEF2 and MEF3 binding sites are indicated in the promoter. The two E-boxes are located at 170 and 184 bp, while the MEF2 and MEF3 binding sites are located at 238 and 259 bp upstream from the ATG start codon. The full-length open reading frame is 735 bp with deduced amino acids of 250 AA (Gene bank accession # HQ724299).