Acts upstream of or within animal organ development; epithelial cilium movement involved in extracellular fluid movement; and outer dynein arm assembly. Located in 9+0 motile cilium; 9+2 motile cilium; and axoneme. Is expressed in node. Used to study primary ciliary dyskinesia 35. Human ortholog(s) of this gene implicated in primary ciliary dyskinesia 35. Orthologous to human ODAD4 (outer dynein arm docking complex subunit 4). [provided by Alliance of Genome Resources, Apr 2022]