And this enhancer sequence is not actually a promoter sequence, but it's basically a sequence onto which a special protein can bind to. And then once that protein binds onto the enhancer sequence, this moves all the way to this region here and it forms a complex and that essentially promotes that process of transcription. It basically increases the efficiency of that RNA polymerase molecule. Now, the thing about these enhancer regions is they can be found either upstream to the left or downstream to the right with respect to where that eukaryotic gene is found. And these enhancer sequences are found very far away from that eukaryotic gene, usually thousands of nucleotides away. So in this particular case, this is 1000 nucleotides away from this eukaryotic gene.