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. Interacts with KLC1; may link mitochondria to KLC1 and regulate mitochondria localization into neuron projections (By similarity). 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. May interact with MAP2K2. 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. May be ubiquitinated by STUB1. The disease is caused by variants affecting the gene represented in this entry. Extended N-terminus. Unlikely isoform. Aberrant splice sites.