This is a non catalytic metalloprotease-like protein. May play a role in sperm-egg fusion (By similarity). Interacts with TEX101. Detected in testis (at protein level). Detected in adult and prepubertal testis. Detected at very low levels in heart, kidney, brain, muscle ovary and uterus. Detected in elongate spermatids, and in caput and cauda epididymal spermatozoa (at protein level). Subject to proteolytic processing during epididymal transit of spermatozoa. Not expected to have protease activity.