Predicted to enable kinesin binding activity. Involved in several processes, including dauer entry; locomotory exploration behavior; and non-motile cilium assembly. Located in ciliary basal body; neuron projection; and non-motile cilium. Part of intraciliary transport particle B. Expressed in amphid sensillum and neurons. Used to study autosomal dominant polycystic kidney disease. Is an ortholog of human IFT88 (intraflagellar transport 88).