Necessary for the survival of cerebellar neurons. Induces neuritogenesis by activating the Ras-MAP kinase pathway. May play a role in the maintenance of a critical intracellular glycosylation level and homeostasis. Homooligomer (By similarity). Interacts with GNB2 (By similarity). Interacts with OGT. Interacts with IQCB1 (By similarity). In high cell density areas; cerebellar cortex, dentate gyrus, hippocampus, anterior olfactory nucleus, primary olfactory cortex. Belongs to the ataxin-10 family.