And so a transamination reaction converts it into aspartate. Now, in step five, once we form the aspartate, the aspartate can now flow out of the inner membrane of the mitochondria via an exchange transport system, an antiported system, in exchange for glutamates. So the aspartate flows out and the glutamate actually flows in. Now, what happens to that glutamate? What is glutamate actually used for? Well, glutamate is actually used in the transamination reaction that we mentioned in step four, that glutamate has an amino group, and that amino group is essentially taken off from that glutamate.