Predicted to enable metal ion binding activity. Involved in several processes, including mitochondrial fragmentation involved in apoptotic process; neurotransmitter receptor localization to postsynaptic specialization membrane; and regulation of postsynaptic density assembly. Located in mitochondrion; neuron projection; and plasma membrane. Is active in glutamatergic synapse and synaptic cleft. Orthologous to human NPTX1 (neuronal pentraxin 1). [provided by Alliance of Genome Resources, Apr 2022]