ERAD-associated E3 ubiquitin-protein ligase DOA10

UniProtKB accession:  P40318

Grouped By:  Matching UniProtKB accession

UniProtKB description:  E3 ubiquitin-protein ligase which accepts ubiquitin specifically from endoplasmic reticulum-associated UBC6 and UBC7 E2 ligases, and transfers it to substrates promoting their degradation (PubMed:11641273, PubMed:16179952, PubMed:16437165, PubMed:16873066, PubMed:17051211, PubMed:18812321, PubMed:20110468). Mediates the degradation of a broad range of substrates, including endoplasmic reticulum membrane proteins (ERQC), soluble nuclear proteins and soluble cytoplasmic proteins (CytoQC) (PubMed:11641273, PubMed:16179952, PubMed:16437165, PubMed:16873066, PubMed:17051211, PubMed:18812321, PubMed:20110468). Component of the DOA10 ubiquitin ligase complex, which is part of the ERAD-C pathway responsible for the rapid degradation of membrane proteins with misfolded cytoplasmic domains (PubMed:16873066). ERAD-C substrates are ubiquitinated through DOA10 in conjunction with the E2 ubiquitin-conjugating enzymes UBC6 and UBC7-CUE1 (PubMed:11641273, PubMed:16179952, PubMed:16437165, PubMed:16873066, PubMed:17051211, PubMed:18812321, PubMed:20110468). Ubiquitinated substrates are then removed to the cytosol via the action of the UFD1-NPL4-CDC48/p97 (UNC) AAA ATPase complex and targeted to the proteasome (PubMed:11641273, PubMed:16179952, PubMed:16437165, PubMed:16873066, PubMed:17051211, PubMed:18812321, PubMed:20110468). Also recognizes the N-terminally acetylated residue of proteins as degradation signal (degron) (PubMed:20110468). N-terminally acetylated target proteins include MATALPHA2, TBF1, SLK19, YMR090W, HIS3, HSP104, UBP6 and ARO8 (PubMed:20110468). Catalyzes ubiquitination of mislocalized tail-anchored proteins that are extracted from the mitochondrion membrane by MSP1: following extraction, mistargeted proteins are transferred to the endoplasmic reticulum, where they are ubiquitinated by DOA10 and degraded by the proteasome (PubMed:31445887).