PXD045535 is an
original dataset announced via ProteomeXchange.
Dataset Summary
Title | Ultra-sensitive platelet proteome maps the O-glycosylation landscape and identifies a new form of domain-specific O-fucosylation |
Description | Platelet activation induces the secretion of proteins that promote platelet aggregation and inflammation. However, detailed analysis of the released platelet proteome is hampered by platelets’ tendency to pre-activate during their isolation and a lack of sensitive protocols for low abundance releasate analysis. Here we detail the most sensitive analysis to date of the platelet releasate proteome with the detection of >1,300 proteins. Unbiased scanning for post-translational modifications within releasate proteins highlighted O-glycosylation as being a major component. For the first time, we detected O-fucosylation on previously uncharacterised sites including multimerin-1 (MMRN1), a major alpha granule protein that supports platelet adhesion to collagen and is a carrier for platelet factor V. The N-terminal elastin microfibril interface (EMI) domain of MMRN1, a key site for protein-protein interaction, was O-fucosylated at a conserved threonine within a new domain context. Our data suggest that either protein O-fucosyltransferase 1 (POFUT1), or a novel POFUT, may be responsible for this modification. Mutating this O-fucose site on the EMI domain led to a >50% reduction of MMRN1 secretion, supporting a key role of EMI O-fucosylation in MMRN1 secretion. By comparing releasates from resting and thrombin-treated platelets, 202 proteins were found to be significantly released after high-dose thrombin stimulation. Complementary quantification of the platelet lysates identified >3,800 proteins, which confirmed the platelet origin of releasate proteins by anti-correlation analysis. Low-dose thrombin treatment yielded a smaller subset of significantly regulated proteins with fewer secretory pathway enzymes. The extensive platelet proteome resource provided here (larancelab.com/platelet-proteome) allows identification of novel regulatory mechanisms for drug targeting to address platelet dysfunction and thrombosis. |
HostingRepository | PRIDE |
AnnounceDate | 2024-02-15 |
AnnouncementXML | Submission_2024-02-14_18:53:10.775.xml |
DigitalObjectIdentifier | |
ReviewLevel | Peer-reviewed dataset |
DatasetOrigin | Original dataset |
RepositorySupport | Unsupported dataset by repository |
PrimarySubmitter | Mark Larance |
SpeciesList | scientific name: Homo sapiens (Human); NCBI TaxID: 9606; |
ModificationList | acetylated residue; monohydroxylated residue; iodoacetamide derivatized residue |
Instrument | Orbitrap Fusion Lumos |
Dataset History
Revision | Datetime | Status | ChangeLog Entry |
0 | 2023-09-20 17:57:38 | ID requested | |
⏵ 1 | 2024-02-14 18:53:11 | announced | |
Publication List
10.1016/j.mcpro.2024.100717; |
Houlahan CB, Kong Y, Johnston B, Cielesh M, Chau TH, Fenwick J, Coleman PR, Hao H, Haltiwanger RS, Thaysen-Andersen M, Passam FH, Larance M, Analysis of the Healthy Platelet Proteome Identifies a New Form of Domain-Specific O-Fucosylation. Mol Cell Proteomics, 23(2):100717(2024) [pubmed] |
Keyword List
submitter keyword: o-glycosylation,platelet |
Contact List
Mark Larance |
contact affiliation | Charles Perkins Centre, School of Medical Sciences, The University of Sydney, Sydney, NSW, Australia. |
contact email | mark.larance@sydney.edu.au |
lab head | |
Mark Larance |
contact affiliation | The University of Sydney |
contact email | mark.larance@sydney.edu.au |
dataset submitter | |
Full Dataset Link List
Dataset FTP location
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PRIDE project URI |
Repository Record List
[ + ]
[ - ]
- PRIDE
- PXD045535
- Label: PRIDE project
- Name: Ultra-sensitive platelet proteome maps the O-glycosylation landscape and identifies a new form of domain-specific O-fucosylation