It consists of two identical subunits and one of these subunits is shown on the board. Basically, we have two of these subunits that essentially interact with one another to form the citrate synthes. Now let's take a look at this subunit. And actually the subunit contains three types of domains or actually two types of domains but overall three domains. So we have one domain here, then we have an intermediate domain and another domain here. And these domains are essentially identical but they're different to this middle domain.