CPSI plays a vital role in protein and nitrogen metabolism. Once ammonia has been brought into the mitochondria via glutamine or glutamate, it is CPSI's job to add the ammonia to bicarbonate along with a phosphate group to form carbamoyl phosphate.
In protein and nitrogen metabolism, CPSI holds significant importance. When ammonia is transported into the mitochondria through glutamine or glutamate, CPSI's function is to link the ammonia with bicarbonate and a phosphate group, resulting in the formation of carbamoyl phosphate.