E3 ubiquitin-protein ligase PEP5

UniProtKB accession:  P12868

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Required for vacuolar biogenesis and for trafficking of hydrolase precursors to the vacuole. Mediates transport at the vacuolar membrane where it may be responsible for tethering transport vesicles on the target membranes. It is required for gluconeogenic growth of yeast. Acts as a component of the HOPS complex that acts during the docking stage of vacuole fusion. HOPS is an effector for the vacuolar Rab GTPase YPT7 and is required for vacuolar SNARE complex assembly. It remains bound to SNARE complexes after vacuole fusion (PubMed:3062374, PubMed:10978279, PubMed:10944212, PubMed:16601699). Acts as a component of the CORVET complex that is required for transport between endosome and vacuole. CORVET is an effector for the endosomal Rab GTPase VPS21 (PubMed:17488625). Probable ubiquitin-protein ligase involved in the degradation-related ubiquitination of histones. Contributes to the post-translational regulation of histone protein levels by polyubiquitination of excess histones for subsequent degradation (PubMed:22570702).