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PXD007630

PXD007630 is an original dataset announced via ProteomeXchange.

Dataset Summary
TitleLysine acetylation of chloroplast proteins 2
DescriptionIn photosynthesis, light is absorbed by the thylakoid embedded light harvesting pigment protein complexes (LHCs) that surround the photosynthetic reaction centers, photosystem II (PSII) and photosystem I (PSI). The distribution of light energy between the photosystems is balanced through state transitions1,2, which refer to the phosphorylation-dependent association of the loosely bound (L) LHCII antenna trimer either to PSII or PSI 3,4. Apart from phosphorylation, other mechanisms regulating state transitions have not been reported this far. In this study we demonstrate that lysine (Lys) acetylation of chloroplast proteins is a prerequisite for state transitions in Arabidopsis thaliana. Knock-out mutants lacking a chloroplast acetyltransferase NSI (At1g32070; AtNSI, SNAT) show selective decreases in the Lys acetylation status of several photosynthetic proteins including PSI, PSII and LHCII subunits. Fluorescence measurements revealed that changes in the wavelength of illumination do not cause state transitions in the nsi mutants even though their LHCII phosphorylation status is not defected. Furthermore, biochemical analyses of thylakoid proteins and protein complexes showed that nsi plants are not able to accumulate the phosphorylation dependent PSI-LHCII megacomplex. Our results manifest that Lys acetylation by NSI has an integral role in the regulation of state transitions in Arabidopsis.
HostingRepositoryPRIDE
AnnounceDate2024-10-22
AnnouncementXMLSubmission_2024-10-22_04:46:32.977.xml
DigitalObjectIdentifier
ReviewLevelPeer-reviewed dataset
DatasetOriginOriginal dataset
RepositorySupportUnsupported dataset by repository
PrimarySubmitterInes Lassowskat
SpeciesList scientific name: Arabidopsis thaliana (Mouse-ear cress); NCBI TaxID: 3702;
ModificationListacetylated residue
InstrumentQ Exactive
Dataset History
RevisionDatetimeStatusChangeLog Entry
02017-09-01 08:01:07ID requested
12018-07-03 06:31:48announced
22018-07-04 00:30:34announcedUpdated project metadata.
32018-07-30 01:27:17announcedUpdated project metadata.
42024-10-22 04:46:41announced2024-10-22: Updated project metadata.
Publication List
10.1105/tpc.18.00155;
Koskela MM, Br, ü, nje A, Ivanauskaite A, Grabsztunowicz M, Lassowskat I, Neumann U, Dinh TV, Sindlinger J, Schwarzer D, Wirtz M, Tyystj, ä, rvi E, Finkemeier I, Mulo P, . Plant Cell, 30(8):1695-1709(2018) [pubmed]
Keyword List
curator keyword: Biological
submitter keyword: Arabidopsis, LC-MSMS,plant
Contact List
Iris Finkemeier
contact affiliationWestfälische Wilhelms-Universität Münster Institut für Biologie und Biotechnologie der Pflanzen Pflanzenphysiologie - AG Finkemeier Schlossplatz 7 48149 Münster
contact emailiris.finkemeier@exchange.wwu.de
lab head
Ines Lassowskat
contact affiliationWWU Münster
contact emaililasso@uni-muenster.de
dataset submitter
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Dataset FTP location
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PRIDE project URI
Repository Record List
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