ERAD-associated E3 ubiquitin-protein ligase DOA10 - P40318 (DOA10_YEAST)


Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for P40318: 1
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. Mediates the degradation of a broad range of substrates, including endoplasmic reticulum membrane proteins (ERQC), soluble nuclear proteins and soluble cytoplasmic proteins (CytoQC). 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. ERAD-C substrates are ubiquitinated through DOA10 in conjunction with the E2 ubiquitin-conjugating enzymes UBC6 and UBC7-CUE1. 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. Also recognizes the N-terminally acetylated residue of proteins as degradation signal (degron). N-terminally acetylated target proteins include MATALPHA2, TBF1, SLK19, YMR090W, HIS3, HSP104, UBP6 and ARO8. UniProt
Catalytic Activity
S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L-cysteine + [acceptor protein]-L-lysine = [E2 ubiquitin-conjugating enzyme]-L-cysteine + N6-ubiquitinyl-[acceptor protein]-L-lysine. UniProt
Pathway Maps
      ESCHER  BiGG
Subunit Structure
Component of the DOA10 complex which contains SSM4/DOA10, CDC48, NPL4, UFD1 AND UBX2/SEL1. The complex is composed of the membrane integral E3 ligase SSM4/DOA10 and the heterotrimeric UFD1-NPL4-CDC48/p97 (UNC) ATPase complex recruited by UBX2/SEL1. Interacts with UBX2/SEL1. Interacts also with its associated ubiquitin conjugating enzymesh UBC6 and UBC7 with its membrane anchor CUE1. Interacts with PEX29. UniProt
The RING-CH-type zinc finger domain is required for E3 ligase activity. UniProt
  • Organism: Baker's yeast
  • Length:
  • UniProt
  • Other Gene names: SSM4, DOA10, YIL030C, YI3299.01C, YI9905.18C
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