Functions as part of axonemal radial spoke complexes that play an important part in the motility of sperm and cilia.
Subcellular locations: Cytoplasm, Chromosome, Cytoplasm, Cytoskeleton, Cilium axoneme, Cytoplasm, Cytoskeleton, Flagellum axoneme
Cytoplasmic in late spermatocytes, secondary spermatocytes and round spermatids. Gathered around metaphase chromosomes during meiotic divisions.
Expressed in trachea, lungs, airway brushings, and testes.