May function as scaffolding protein. Required for normal location of RPGR at the connecting cilium of photoreceptor cells. Required for normal disk morphogenesis and disk organization in the outer segment of photoreceptor cells and for survival of photoreceptor cells.
Subcellular locations: Cell projection, Cilium
Situated between the axonemal microtubules and the plasma membrane (By similarity). In the retinal photoreceptor cell layer, localizes at the connecting cilium, a thin bridge linking the cell body and the light-sensing outer segment (By similarity). Colocalizes with RGPR in the photoreceptor connecting cilium (By similarity).
Strong expression in retina, with weaker expression in testis. Expressed in other neurons such as amacrine cells. Colocalizes with RGPR in the outer segment of rod photoreceptors and cone outer segments.