Predicted to enable microtubule binding activity. Acts upstream of or within establishment of spindle orientation. Located in ciliary basal body; ciliary rootlet; and mitotic spindle. Is expressed in several structures, including alimentary system; brain; genitourinary system; integumental system; and sensory organ. Orthologous to human SPAG5 (sperm associated antigen 5). [provided by Alliance of Genome Resources, Apr 2022]