This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: HAEM synth and porphyrias, Subject name: Biochemistry
[{'content': 'Which of the following is the prosthetic group of the enzyme ALA dehydratase? \nSelect and explain. \nA. Zinc, B. Copper, C. Lead, D. Magnesium', 'role': 'user'}, {'content': 'Answer: A \nExplanation: ALA dehydratase is a zinc metalloprotein. Option c - Lead inhibits ALA dehydratase. -Additional information: List of zinc containing enzymes: Carbonic anhydrase Carboxy peptidase Alcohol dehydrogenase Alkaline phosphatase Lactate dehydrogenase ALA dehydratase Glutamate dehydrogenase Superoxide dismutase Phospholipase C RNA polymerase', 'role': 'assistant'}]