(a) The UVRAG C-terminal 270-442 region interacts with RINT-1. Cells (HEK293T) were co-transfected with HA-RINT-1, together with Flag-UVRAG or its mutant derivatives, and whole-cell lysates (WCLs) were immunoprecipitated (IP) with anti-Flag, followed by immunoblotting (IB) with an anti-HA antibody. 