PXD032903 is an
original dataset announced via ProteomeXchange.
Dataset Summary
Title | VCP-dependent CNN2 proximity proteomics |
Description | Lysosomal membrane permeabilization (LMP) is an underlying feature of diverse conditions including neurodegeneration. Cells respond by extensive ubiquitylation of membrane-associated proteins for clearance of the organelle through lysophagy that is facilitated by the ubiquitin-directed AAA-ATPase VCP/p97. Here, we assessed the ubiquitylated proteome upon acute LMP and uncovered a large diversity of targets and lysophagy regulators. They include calponin-2 (CNN2) that, along with the Arp2/3 complex, translocates to damaged lysosomes and regulates actin filaments to drive phagophore formation. Importantly, CNN2 needs to be ubiquitylated during the process and eliminated by VCP/p97 and proteasome for efficient lysophagy. Moreover, we identified the small heat shock protein HSPB1 that assists VCP/p97 in extraction of CNN2, and show that other membrane regulators including SNAREs, PICALM, AGFG1 and ARL8B are ubiquitylated during lysophagy. Our data reveal a framework of how ubiquitylation and two effectors, VCP/p97 and HSPB1, cooperate to protect cells from the deleterious effects of LMP. |
HostingRepository | PRIDE |
AnnounceDate | 2022-06-23 |
AnnouncementXML | Submission_2022-06-23_04:01:29.317.xml |
DigitalObjectIdentifier | |
ReviewLevel | Peer-reviewed dataset |
DatasetOrigin | Original dataset |
RepositorySupport | Unsupported dataset by repository |
PrimarySubmitter | Christian Behrends |
SpeciesList | scientific name: Homo sapiens (Human); NCBI TaxID: 9606; |
ModificationList | acetylated residue; iodoacetamide derivatized residue |
Instrument | Q Exactive HF |
Dataset History
Revision | Datetime | Status | ChangeLog Entry |
0 | 2022-04-02 10:32:24 | ID requested | |
⏵ 1 | 2022-06-23 04:01:29 | announced | |
Publication List
Dataset with its publication pending |
Keyword List
submitter keyword: CNN2, VCP, NMS873, APEX2 |
Contact List
Christian Behrends |
contact affiliation | SyNergy, LMU München |
contact email | christian.behrends@mail03.med.uni-muenchen.de |
lab head | |
Christian Behrends |
contact affiliation | SyNergy, LMU München |
contact email | christian.behrends@mail03.med.uni-muenchen.de |
dataset submitter | |
Full Dataset Link List
Dataset FTP location
NOTE: Most web browsers have now discontinued native support for FTP access within the browser window. But you can usually install another FTP app (we recommend FileZilla) and configure your browser to launch the external application when you click on this FTP link. Or otherwise, launch an app that supports FTP (like FileZilla) and use this address: ftp://ftp.pride.ebi.ac.uk/pride/data/archive/2022/06/PXD032903 |
PRIDE project URI |
Repository Record List
[ + ]
[ - ]
- PRIDE
- PXD032903
- Label: PRIDE project
- Name: VCP-dependent CNN2 proximity proteomics