You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Precursor of tyrosine is: and explain in detail?
Phenylalanine in the presence of phenylalanine hydroxylase forms tyrosine . So precursor for tyrosine is phenylalanine Extra Information: Enzyme Disease Phenylalanine hydroxylase Classical phenylketonuria or PKU-1 Dihydrobiopterin reductase Non-classical PKU type 2 & 3 GTP-Cyclo hydrolase Non-classical type 4 or 5