But it's the l isozyme in the liver cells that predominates. And so unlike the misozyme we find in muscle cells, the lizosign is actually controlled by another process and that process is for sporulation. So to see what we mean, let's take a look at the following diagram. So, this is the li design that we typically find in liver cells. And it exists in two different states in a phosphorylated state and in a state where it's not phosphorylated. Now, when we phosphorylate that alpyruvate kinase in liver cells that deactivates the molecule, it decreases its ability to actually catalyze the reaction.