Predicted to enable glycosaminoglycan binding activity and metalloendopeptidase inhibitor activity. Predicted to be involved in negative regulation of endopeptidase activity. Predicted to act upstream of or within peptide cross-linking via chondroitin 4-sulfate glycosaminoglycan. Predicted to be located in extracellular matrix and extracellular space. Orthologous to human SPOCK3 (SPARC (osteonectin), cwcv and kazal like domains proteoglycan 3). [provided by Alliance of Genome Resources, Apr 2022]