| Here , we report that Rabenosyn 5 , a previously identified Rab 5 effector , also binds to Rab 4 . ^^^ Rabenosyn 5 overexpression increased the association between Rab 5 and Rab 4 endosomal domains and decreased the fraction of Rab 4 and Rab 11 positive structures . ^^^ These effects depend on the ability of Rabenosyn 5 to interact with Rab 4 . ^^^ |