Metalloprotease involved in sperm function, possibly by modulating the processes of fertilization and early embryonic development. Degrades a broad variety of small peptides with a preference for peptides shorter than 3 kDa containing neutral bulky aliphatic or aromatic amino acid residues. Shares the same substrate specificity with MME and cleaves peptides at the same amide bond (By similarity).
Subcellular locations: Membrane, Secreted
A secreted form produced by proteolytic cleavage also exists.
Predominantly expressed in testis. Weakly expressed in brain, kidney and heart.