This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'Histone has post - translational modification by all/except. \nSelect and explain. \nA. Acylation, B. Methylation, C. Phosphorylation, D. Glycosylation', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Glycosylation', 'role': 'assistant'}]