Predicted to enable metalloendopeptidase activity. Predicted to be involved in collagen catabolic process; determination of heart left/right asymmetry; and extracellular matrix organization. Predicted to act upstream of or within coronary vasculature development; determination of left/right symmetry; and hematopoietic progenitor cell differentiation. Predicted to be located in extracellular matrix. Predicted to be active in extracellular space. Human ortholog(s) of this gene implicated in visceral heterotaxy. Orthologous to human MMP21 (matrix metallopeptidase 21). [provided by Alliance of Genome Resources, Apr 2022]