Microtubule inner protein involved in the attachment of outer dynein arms (ODAs) to dynein-decorated doublet microtubules (DMTs) in cilia axoneme, which is required for motile cilia beating . Functions at the initial step of left-right asymmetry specification of the visceral organs.
Subcellular locations: Cytoplasm, Cytoskeleton, Cilium axoneme
Expressed in airway epithelial cells.