Enables metalloendopeptidase activity. Acts upstream of or within intracellular signal transduction and peptide metabolic process. Predicted to be located in cytoplasm. Predicted to be active in mitochondrial intermembrane space. Is expressed in head mesenchyme and vertebral axis musculature. Orthologous to human THOP1 (thimet oligopeptidase 1). [provided by Alliance of Genome Resources, Apr 2022]