Plays a role in spermatogenesis (By similarity). When overexpressed, prevents nuclear localization of HIF1A (By similarity).
Subcellular locations: Cytoplasm, Cytoplasm, Cytoskeleton, Microtubule organizing center, Centrosome, Centriole
In mature spermatozoa, localizes to the centriole and midpiece (By similarity). The 27-kDa peptide associates with the fibrous sheath in mature spermatozoa and localizes to the principal piece of sperm tail, while the 55-kDa peptide localizes to the midpiece. Detected in the cytoplasm of almost all spermatogonial cells within the seminiferous tubules (By similarity).