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': 'Proteins which is having DNA binding domain in its structure: \nSelect and explain. \nA. Zinc finger, B. p- sheet, C. 13-band, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e., Zinc finger', 'role': 'assistant'}]