And once we form tyrosine, it then reacts bidactivity of tyrosine immune transferase to form dehydroxy phenyl pyruvate this intermediate as then transform into homogeneousate bidactivity of the enzyme phydroxy phenomenon diruvate dioxygenase. And then this molecule continues via these series of steps to ultimately form acetylacetate and fumarate. Now, in our liver, this molecule can be used to form ketone bodies, while fumarrate can be used to form glucose. And both ketone bodies and glucose molecules can be used by the cells of our body to generate high energy molecules. Now, in a person who has al captainuria, they basically have genes that are defective. So the genes that code for this enzyme humagentosate wants to dioxygenase, essentially code for a defective enzyme.