Functions in the development of neural tissues, particularly the postnatal maturation of the cerebellar cortex. May play a role in neurotransmission through regulation of glutaminase/GLS, an enzyme responsible for the production in neurons of the glutamate neurotransmitter. Alternatively, may regulate the localization of mitochondria within axons and dendrites (By similarity). Interacts with KLC1; may link mitochondria to KLC1 and regulate mitochondria localization into neuron projections. Interacts with GLS; the interaction is direct and may control GLS localization, negatively regulating its activity. Interacts with PIN1 (via WW domain); upon NGF stimulation. The interaction with PIN1 and GLS is competitive. The CRAL-TRIO domain is known to bind small hydrophobic molecules. Cleaved by CASP3 and CASP7. The potential C-terminal product released by CASP3 cleavage may inhibit the ERK signaling pathway through MAP2K2 (By similarity). May be ubiquitinated by STUB1.