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PXD033458

PXD033458 is an original dataset announced via ProteomeXchange.

Dataset Summary
TitleHistone malonylation is regulated by SIRT5 and KAT2A
DescriptionThe posttranslational modification lysine malonylation is found in many proteins, including histones. However, it remains unclear whether histone malonylation is regulated or functionally relevant. Here, we report that availability of malonyl-co-enzyme A (malonyl-CoA), an endogenous provider of malonyl groups, affects lysine malonylation, and that the deacylase SIRT5 selectively reduces malonylation of histones. To determine if histone malonylation is enzymatically catalyzed, we knocked down each of the 22 lysine acetyltransferases (KATs) to test their malonyltransferase potential. KAT2A knockdown reduced and KAT2A overexpression increased levels of histone malonylation, respectively. By mass spectrometry, H2B_K5 was highly malonylated and significantly regulated by SIRT5 in mouse brain and liver. Acetyl-CoA carboxylase (ACC), the malonyl-CoA producing enzyme, was partly localized in the nucleolus, and histone malonylation increased nucleolar area and ribosomal RNA expression. Levels of global lysine malonylation and ACC expression were higher in older mouse brains than younger mice. These experiments highlight the role of histone malonylation in ribosomal gene expression.
HostingRepositoryMassIVE
AnnounceDate2023-01-09
AnnouncementXMLSubmission_2023-01-09_10:30:51.636.xml
DigitalObjectIdentifier
ReviewLevelNon peer-reviewed dataset
DatasetOriginOriginal dataset
RepositorySupportUnsupported dataset by repository
PrimarySubmitterJoanna Bons
SpeciesList scientific name: Mus musculus; common name: house mouse; NCBI TaxID: 10090;
ModificationListN6-malonyl-L-lysine
InstrumentOrbitrap Eclipse
Dataset History
RevisionDatetimeStatusChangeLog Entry
02022-04-26 14:36:34ID requested
12023-01-09 10:30:52announced
Publication List
no publication
Keyword List
submitter keyword: Aging, Histone, Malonylation, Nucleolus, SIRT5
Contact List
Birgit Schilling
contact affiliationBuck Institute
contact emailbschilling@buckinstitute.org
lab head
Joanna Bons
contact affiliationBuck Institute for Research on Aging
contact emailjbons@buckinstitute.org
dataset submitter
Full Dataset Link List
MassIVE dataset URI
Dataset FTP location
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