<prompt> Protein affected in spinocerebellar ataxia type 6Ataxina1A-Voltage-dependent calcium channel subunitAtrophinAndrogen receptor  <response>: Ans. b a1A-Voltage-dependent calcium channel subunitRef: 19thapg 451Spinocerebellar ataxia type 6 is due to CACNA2A gene on chromosome 19pl3.3, which codes for a1A-Voltage- dependent calcium channel subunit protein. 