This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Structure and function of protein, Subject name: Biochemistry
[{'content': 'Deficiency of which of the following micronutrient results in Menkes syndrome \nSelect and explain. \nA. Magnesium, B. Copper, C. Selenium, D. Manganese', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Menkes syndrome, characterized by kinky hair and growth retardation, reflects a dietary deficiency of the copper required by lysyl oxidase, which catalyzes a key step in the formation of the covalent cross-links that strengthen collagen fibers.Ref: Harper&;s Biochemistry; 30th edition; Chapter 5; Proteins: Higher Orders of Structure', 'role': 'assistant'}]