Predicted to enable calcium ion binding activity; cysteine-type endopeptidase inhibitor activity; and metalloendopeptidase inhibitor activity. Acts upstream of or within central nervous system neuron differentiation and neuron migration. Located in neuromuscular junction; node of Ranvier; and sarcoplasm. Is expressed in several structures, including jaw; nervous system; nose; skeletal musculature; and thymus primordium. Orthologous to human SPOCK1 (SPARC (osteonectin), cwcv and kazal like domains proteoglycan 1). [provided by Alliance of Genome Resources, Apr 2022]