Plays a role in acrosome compaction and sperm morphogenesis . Is implicated in sperm-oocyte interaction during fertilization (By similarity).
Subcellular locations: Cytoplasmic vesicle, Secretory vesicle, Acrosome, Cytoplasmic vesicle, Secretory vesicle, Acrosome membrane, Secreted
First localized in acrosome granule, later migrates to the inner and outer acrosomal membrane. Released after the acrosomal reaction.
Expressed specifically in testis.