Plays a role in acrosome expansion and establishment of normal sperm morphology during spermatogenesis (By similarity). Important for male fertility .
Subcellular locations: Cytoplasmic vesicle, Secretory vesicle, Acrosome inner membrane
Primarily found in the equatorial segment of the acrosome . The tyrosine phosphorylated protein localizes to a smaller region within the equatorial segment (By similarity). Also expressed weakly in the principal segment .
Testis specific.