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 microtubule-based movement. Predicted to be located in cilium; cytoplasm; and microtubule. Predicted to be part of dynein complex. Predicted to be active in 9+2 motile cilium and axoneme. Is expressed in Kupffer's vesicle and testis. Human ortholog(s) of this gene implicated in spermatogenic failure 45. Orthologous to human DNAH2 (dynein axonemal heavy chain 2).