| Cellular localization: |
Cytoplasmic vesicle, secretory vesicle, acrosome . Cytoplasm, cytoskeleton . Located at the edge of the acrosomal region, neck and annulus during spermiogenesis. Colocalizes with RAB3A at the acrosome-acroplaxome and neck regions of spermatids. Colocalizes with ACTB at the neck region in elongated spermatids. . |