This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genetics, Subject name: Pathology
[{'content': 'Protein affected in spinocerebellar ataxia type 6 \nSelect and explain. \nA. Ataxin, B. a1A-Voltage-dependent calcium channel subunit, C. Atrophin, D. Androgen receptor', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) a1A-Voltage-dependent calcium channel subunit(Ref: 19tha/pg 451)Spinocerebellar ataxia type 6 is due to CACNA2A gene on chromosome 19pl3.3, which codes for a1A-Voltage- dependent calcium channel subunit protein.', 'role': 'assistant'}]