ArticleCommunications biology2025
Cryo-EM structure of the human Derlin-1/p97 complex reveals a hexameric channel in ERAD.
Article in Communications biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Gene Expression Analysis of Mitochondria-Associated Membrane (MAM)-Related Genes in ER Stress and Alzheimer's Disease.Cellular and molecular neurobiology · 2026Article
- The Hrd1-Mediated ERAD Pathway in Plants: Conserved Principles and Plant-Specific Innovations.International journal of molecular sciences · 2026Review
- Structural basis and pathological implications of the dimeric OS9-SEL1L-HRD1 ERAD Core Complex.Nature communications · 2026Article
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Authors and funding
10 authors.
Funding
Abstract
The ER-associated degradation (ERAD) pathway retrotranslocates misfolded proteins from the ER lumen to the cytoplasm for proteasomal degradation. Derlin-1 and p97 are central to this process, forming a canonical 4:6 complex with tetrameric Derlin-1. Using cryo-electron microscopy, we identify a novel human Derlin-1/p97 complex with a 6:6 stoichiometry, where hexameric Derlin-1 assembles as three dimers. This hexameric channel forms a significantly larger trans-ER membrane tunnel, potentially accommodating bulkier substrates. Structural comparisons revealed conformational flexibility in Derlin-1, suggesting the "U"-shaped tetramer may act as an intermediate in hexamer formation. The formation of this hexameric channel is mediated by interactions with p97 and appears dependent on p97's ATPase activity, which provides the driving force for the transition between the tetrameric channel conformation to the intermediate "U"-shaped conformation. These findings highlight the dynamic nature of the Derlin-1/p97 complex and its implications for understanding ERAD retrotranslocation.
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