Predicted to enable AMP binding activity. Acts upstream of or within epithelial cilium movement involved in extracellular fluid movement; flagellated sperm motility; and regulation of cilium beat frequency involved in ciliary motility. Located in 9+0 motile cilium. Is expressed in lateral ventricle choroid plexus; lung; metencephalon part of 4th ventricle choroid plexus; and olfactory epithelium. Orthologous to human CFAP45 (cilia and flagella associated protein 45). [provided by Alliance of Genome Resources, Apr 2022]