<<< Full experiment listing

PXD049391

PXD049391 is an original dataset announced via ProteomeXchange.

Dataset Summary
TitleMolecular mechanism of β-arrestin-2 pre-activation by phosphatidylinositol 4,5-bisphosphate
DescriptionArrestins are a protein family that regulate G protein-coupled receptor (GPCR) signaling, with four distinct members in mammals (arrestin 1–4). Phosphorylated residues of G protein-coupled receptors bind to the N-domain of arrestin, resulting in C-terminus release. This induces further allosteric conformational changes, such as polar core disruption, alteration of interdomain loops, and domain rotation, which transform arrestins into the receptor-activated state. It is widely accepted that arrestin activation occurs by conformational changes propagated from the N- to the C-domain. However, recent studies have revealed that binding of phosphatidylinositol 4,5-bisphosphate (PIP2) to the C-domain transforms arrestins into an active state. In this study, we aimed to elucidate the mechanisms underlying PIP2-induced arrestin activation. We compared the conformational changes of β-arrestin-2 upon binding of PIP2 or phosphorylated C-tail peptide of vasopressin receptor type 2 (V2Rpp) using hydrogen/deuterium exchange mass spectrometry (HDX-MS). Introducing point mutations on the potential routes of the allosteric conformational changes and analyzing these mutant constructs with HDX-MS revealed that PIP2-binding at the C-domain affects the back loop, which destabilizes the gate loop and β-strand XX to transform β-arrestin-2 into the pre-active state.
HostingRepositoryPRIDE
AnnounceDate2024-10-22
AnnouncementXMLSubmission_2024-10-22_06:49:49.856.xml
DigitalObjectIdentifier
ReviewLevelPeer-reviewed dataset
DatasetOriginOriginal dataset
RepositorySupportUnsupported dataset by repository
PrimarySubmitterKiae Kim
SpeciesList scientific name: Rattus norvegicus (Rat); NCBI TaxID: 10116;
ModificationListNo PTMs are included in the dataset
InstrumentXevo G2 Q-Tof
Dataset History
RevisionDatetimeStatusChangeLog Entry
02024-02-14 16:32:37ID requested
12024-07-15 01:53:14announced
22024-10-22 06:49:50announced2024-10-22: Updated project metadata.
Publication List
Dataset with its publication pending
Keyword List
submitter keyword: Arrestin,Hydrogen/deuterium exchange mass spectrometry (HDX-MS),5-bisphosphate, phosphatidylinositol 4
Contact List
Ka Young
contact affiliationSchool of Pharmacy, Sungkyunkwan University, South Korea
contact emailkychung2@skku.edu
lab head
Kiae Kim
contact affiliationSungkyunkwan University
contact emailkimkiae95@skku.edu
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/2024/07/PXD049391
PRIDE project URI
Repository Record List
[ + ]