Predicted to enable dynein intermediate chain binding activity; dynein light intermediate chain binding activity; and minus-end-directed microtubule motor activity. Predicted to be involved in cilium movement involved in cell motility. Predicted to act upstream of or within cilium movement and inner dynein arm assembly. Predicted to be located in cilium and cytosol. Predicted to be part of inner dynein arm. Predicted to be active in 9+2 motile cilium. Is expressed in spermatozoon and testis. Human ortholog(s) of this gene implicated in primary ciliary dyskinesia. Orthologous to human DNAH7 (dynein axonemal heavy chain 7).