E3 ubiquitin-protein ligase PEP5 (EC 2.3.2.27) (Carboxypeptidase Y-deficient protein 5) (Histone E3 ligase PEP5) (RING-type E3 ubiquitin transferase PEP5) (Vacuolar biogenesis protein END1) (Vacuolar morphogenesis protein 1) (Vacuolar protein sorting-associated protein 11) (Vacuolar protein-targeting protein 11)