Involved in regulation of presynapse assembly and regulation of synaptic membrane adhesion. Acts upstream of or within neuron migration and pattern specification process. Located in GABA-ergic synapse. Is active in glutamatergic synapse. Orthologous to human MDGA2 (MAM domain containing glycosylphosphatidylinositol anchor 2). [provided by Alliance of Genome Resources, Apr 2022]