So this operon consists of the regulatory section and the coding section. Now the regulatory section itself consists of two important control sites. We have the promoter side as well as the operator side and we'll see what the function of those sites is in just a moment. And our coding section actually consists of sequence of DNA that code for certain types of polypeptides for certain types of proteins. So this is our opera. It consists of our control sites and also consists of the structural genes.