PXD059488 is an
original dataset announced via ProteomeXchange.
Dataset Summary
| Title | 5'UTR-mediated retention of eIF3 on 80S ribosomes promotes co-translational folding of ER membrane proteins |
| Description | Co-translational folding of nascent polypeptides is essential for protein function and cellular homeostasis. Ribosome-associated chaperones assist in this process, but coordination between their recruitment and translation initiation remains poorly understood. We report here that specific binding sites for eukaryotic translation initiation factor eIF3 within the 5' untranslated regions (5'UTRs) of mRNAs promote its retention on 80S ribosomes during the synthesis of select endoplasmic reticulum (ER) membrane proteins. Disruption of these eIF3 binding sites leads to misfolding and sequestration of newly synthesized membrane proteins into ER whorls. Sequestration into ER whorls is exacerbated by HSP70 inhibition but can be rescued by overexpressing HSPA8 and HSPA1. Cross-linking assays reveal that 5'UTR binding sites stabilize eIF3–80S interactions during early elongation, facilitating recruitment of HSPA8 to ribosomes. These findings indicate that genetic instructions within 5'UTRs direct eIF3-mediated chaperone recruitment, ensuring proper co-translational folding of ER membrane proteins. |
| HostingRepository | PRIDE |
| AnnounceDate | 2025-10-29 |
| AnnouncementXML | Submission_2025-10-28_17:20:58.106.xml |
| DigitalObjectIdentifier | |
| ReviewLevel | Peer-reviewed dataset |
| DatasetOrigin | Original dataset |
| RepositorySupport | Unsupported dataset by repository |
| PrimarySubmitter | Baochun Han |
| SpeciesList | scientific name: Homo sapiens (Human); NCBI TaxID: NEWT:9606; |
| ModificationList | No PTMs are included in the dataset |
| Instrument | Orbitrap Exploris 480 |
Dataset History
| Revision | Datetime | Status | ChangeLog Entry |
|---|
| 0 | 2025-01-06 21:10:56 | ID requested | |
| ⏵ 1 | 2025-10-28 17:20:58 | announced | |
Publication List
Keyword List
Contact List
| Dieter A.Wolf |
|---|
| contact affiliation | Westlake university |
| contact email | dawolf@westlake.edu.cn |
| lab head | |
| Baochun Han |
|---|
| contact affiliation | Xiamen University |
| contact email | hanbaochun@westlake.edu.cn |
| dataset submitter | |
Full Dataset Link List
Dataset FTP location
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| PRIDE project URI |
Repository Record List
[ + ]
[ - ]
- PRIDE
- PXD059488
- Label: PRIDE project
- Name: 5'UTR-mediated retention of eIF3 on 80S ribosomes promotes co-translational folding of ER membrane proteins
