And this is an important step. And essentially, this is what we call a cycle because we begin with methionine, we move along and we generate that methionine back in the process. We also generate that sand molecule that can be used to methylate some particular target molecule. So that's why this step is so important. But it's also important for the following reason. What this step allows us to do when we go from homocysteine to methionine is it allows us to regenerate another important molecule known as tetrahydrophobate.