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PXD039634

PXD039634 is an original dataset announced via ProteomeXchange.

Dataset Summary
TitleAn Msp1-containing complex removes orphaned proteins in the mitochondrial outer membrane of trypanosomes (RNAi knockdown data)
DescriptionThe AAA-ATPase Msp1 extracts mislocalized outer membrane proteins and thus contributes to mitochondrial proteostasis. Using pull down experiments, we show that trypanosomal Msp1 localizes to both the glycosome and the mitochondrial outer membrane, where it forms a stable complex with four outer membrane proteins. The trypanosome-specific pATOM36 mediates complex assembly of α-helically anchored mitochondrial outer membrane proteins, such as protein translocase subunits. Inhibition of complex assembly triggers a pathway that results in the proteasomal digestion of unassembled substrates. Using inducible single, double and triple RNAi cell lines combined with proteomic analyses, we demonstrate that both TbMsp1 and the trypanosomal homolog of a cytosolic AAA-ATPase, VCP, are implicated in this quality control pathway. Moreover, in the absence of TbVCP, three out of the four TbMsp1-interacting mitochondrial proteins are required for efficient proteasomal digestion of pATOM36 substrates, suggesting they act in concert with TbMsp1. pATOM36 is a functional analogue of the yeast MIM complex, and possibly of human MTCH2, suggesting that similar mitochondrial quality control pathways linked to Msp1 might also exist in yeast and humans.
HostingRepositoryPRIDE
AnnounceDate2023-07-26
AnnouncementXMLSubmission_2023-07-26_05:40:42.130.xml
DigitalObjectIdentifier
ReviewLevelPeer-reviewed dataset
DatasetOriginOriginal dataset
RepositorySupportUnsupported dataset by repository
PrimarySubmitterJulianBender
SpeciesList scientific name: Trypanosoma brucei; NCBI TaxID: 5691;
ModificationListmonohydroxylated residue; iodoacetamide derivatized residue
InstrumentLTQ Orbitrap Elite
Dataset History
RevisionDatetimeStatusChangeLog Entry
02023-01-24 08:27:43ID requested
12023-07-26 05:40:42announced
Publication List
Dataset with its publication pending
Keyword List
submitter keyword: Trypanosoma brucei, proteomics,peptide stable isotope dimethyl labeling, mitochondrial quality control, RNAi-mediated protein knockdown
Contact List
BettinaWarscheid
contact affiliationFaculty of Chemistry and Pharmacy, Biochemistry II, Theodor Boveri-Institute, University of Würzburg, Germany
contact emailbettina.warscheid@uni-wuerzburg.de
lab head
JulianBender
contact affiliationUniversity of Wuerzburg Chair of Biochemistry II Am Hubland 97074 Würzburg
contact emailjulian.bender@uni-wuerzburg.de
dataset submitter
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Dataset FTP location
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