Has a role in the maintenance of acrosome structure . May function as a regulator of both spermatozoa motility and head-associated functions such as capacitation and the acrosome reaction.
Subcellular locations: Cytoplasmic vesicle, Secretory vesicle, Acrosome
Ribs of the fibrous sheath in the principal piece of the sperm tail. Dorsal margin of the acrosomal segment.
Testis specific; only expressed in spermatids.