The core promoter regions alignment of <i>Fads2</i> from <i>Siganus canaliculatus</i>, <i>Dicentrarchus labrax</i>, <i>Gadus morhua</i>, <i>Salmon salar</i>, <i>Danio rerio</i> and <i>Homo sapiens</i>.

<p>While the <i>S</i>. <i>canaliculatus Fads</i> encodes a Δ4 desaturase, the other Fads2-like genes encode desaturases with Δ6 activity or Δ6/Δ5 activity. The sequences of latter four promoters were obtained from the corresponding reported references and <i>Danio rerio</i> Δ6/Δ5 <i>Fad</i> promoter was from NCBI genome data. The sequences are all numbered relative to the transcription start site. The conserved elements of NF-Y and SRE are labeled with shaded box.