Is predicted to encode a protein with the following domains: RPGRIP1 family; RPGR-interacting protein 1, first C2 domain; C2 domain superfamily; and First C2 domain of RPGR-interacting protein 1. Is an ortholog of C. elegans mks-5. In C. elegans, mks-5 is involved in several processes, including non-motile cilium assembly; protein localization to cilium; and protein to membrane docking.