ataxin-8 (protein 1C2)
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Function
- gene (SCA8 gene) also encodes small inhibitory RNA that regulates brain-specific actin-binding protein (putative)
Compartment
- present in SCA8-specific 1C2-positive intranuclear inclusions
Expression
- specifically found in brains from SCA8 patients (at protein level)
- it is unknown whether this protein exists in individuals without spinocerebellar ataxia type 8
Pathology
- defects in ATXN8 are a cause of spinocerebellar ataxia 8
Polymorphism
- length of the poly-Gln expansion is variable & may contain one or more interruptions that introduce Arg into the polyglutamine repeat tract