ArticleLife science alliance2024
Chaperone BiP controls ER stress sensor Ire1 through interactions with its oligomers.
Article in Life science alliance, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Article
- Plant natural products targeting NLRP3 inflammasome in Parkinson's disease: Molecular activation and regulation to therapeutics.iScience · 2026Review
- Seed Nanopriming with Spirulina-Derived Carbon Dots Enhances Rice (Plants (Basel, Switzerland) · 2026Article
- cZFP609 Tethering BiP Alleviates Cartilage Degradation in Osteoarthritis via Remedying Aberrant ER-Mitochondrial Contacts.MedComm · 2025Article
- Activation of farnesoid X receptor upregulates binding immunoglobulin protein expression and alleviates diabetic nephropathy.World journal of diabetes · 2025Article
- Targeting Acetyl-CoA Carboxylase Suppresses De Novo Lipogenesis and Tumor Cell Growth in Multiple Myeloma.Clinical cancer research : an official journal of the American Association for Cancer Research · 2025Article
- Parkinson's Disease: The Neurodegenerative Enigma Under the "Undercurrent" of Endoplasmic Reticulum Stress.International journal of molecular sciences · 2025Review
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Authors and funding
11 authors.
Funding
Abstract
The complex multistep activation cascade of Ire1 involves changes in the Ire1 conformation and oligomeric state. Ire1 activation enhances ER folding capacity, in part by overexpressing the ER Hsp70 molecular chaperone BiP; in turn, BiP provides tight negative control of Ire1 activation. This study demonstrates that BiP regulates Ire1 activation through a direct interaction with Ire1 oligomers. Particularly, we demonstrated that the binding of Ire1 luminal domain (LD) to unfolded protein substrates not only trigger conformational changes in Ire1-LD that favour the formation of Ire1-LD oligomers but also exposes BiP binding motifs, enabling the molecular chaperone BiP to directly bind to Ire1-LD in an ATP-dependent manner. These transient interactions between BiP and two short motifs in the disordered region of Ire1-LD are reminiscent of interactions between clathrin and another Hsp70, cytoplasmic Hsc70. BiP binding to substrate-bound Ire1-LD oligomers enables unfolded protein substrates and BiP to synergistically and dynamically control Ire1-LD oligomerisation, helping to return Ire1 to its deactivated state when an ER stress response is no longer required.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.