But this happens separate of the urea cycle. So once arginine is transformed into ornathene, the ornithine then acts as a substrate for the enzyme ornathene amino transfers phrase. And what that enzyme does is it transforms that ornithine into glutamate semiaaldehyde, and then the glutamate semi aldehyde is transformed into glutamate via this step here. And so ultimately we form that glutamate. And then we use this process here to form the alpha key to gluterate. So we see that these four amino acids are transformed into glutamate, and then glutamate is transformed into alpha key to glutorate.