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PXD064018

PXD064018 is an original dataset announced via ProteomeXchange.

Dataset Summary
TitleCombination of in vivo and in vitro phosphoproteomics determines the PP2A target repertoire on proteome scale
DescriptionDynamics of protein phosphorylation are regulated by the interplay of protein kinases and phosphatases. Current mass spectrometry-based phosphoproteomic approaches are extremely powerful in identifying and quantifying tens of thousands of different phosphorylation events in single biological samples. However, whereas the mapping of phosphorylation events has been successfully automated supporting high sample throughput, the characterization of responsible kinases and phosphatases still largely depends on laborious protein biochemical assays. To show direct (de)phosphorylation events in vitro kinase or phosphatase assays using single substrates or peptide arrays are still the methods of choice. Here we describe the development of an in vitro phosphatase assay using whole proteome under native conditions as input. We employ this approach to study the PP1 and PP2A target repertoire, characterizing thousands of potential target sites. Focusing on PPP2R5E/B56-containing complexes, we combine in vitro with in vivo phosphoproteomics to characterize bona fide target sites, which highlight PP2A`s role in regulating stress granule assembly.
HostingRepositoryPanoramaPublic
AnnounceDate2025-05-16
AnnouncementXMLSubmission_2025-05-16_09:38:14.967.xml
DigitalObjectIdentifier
ReviewLevelNon peer-reviewed dataset
DatasetOriginOriginal dataset
RepositorySupportsupported by repository but incomplete data and/or metadata
PrimarySubmitterMelanie Brunner
SpeciesList scientific name: Homo sapiens; NCBI TaxID: 9606;
ModificationListPhospho
InstrumentQ Exactive HF-X
Dataset History
RevisionDatetimeStatusChangeLog Entry
02025-05-16 09:25:57ID requested
12025-05-16 09:38:15announced
Publication List
Dataset with its publication pending
Keyword List
submitter keyword: Phosphatase, PRM, OBIPhA
Contact List
Joern Dengjel
contact affiliationUniversity of Fribourg
contact emailjoern.dengjel@unifr.ch
lab head
Melanie Brunner
contact affiliationUniversity of Fribourg
contact emailmelanie.brunner@unifr.ch
dataset submitter
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Panorama Public dataset URI