PXD025102-1

PXD025102 is an original dataset announced via ProteomeXchange.

Title	Molecular characterization of a complex of Apoptosis Inducing Factor 1 (AIFM1) with cytochrome c oxidase of the mitochondrial respiratory chain
Description	Combining mass spectrometry based chemical cross-linking and complexome profiling, we analyzed the interactome of heart mitochondria. We focused on complexes of oxidative phosphorylation and found that dimeric apoptosis inducing factor 1 (AIFM1) forms a defined complex with ~10% of monomeric cytochrome c oxidase (COX), but hardly interacts with respiratory chain supercomplexes. Multiple AIFM1 inter-crosslinks engaging six different COX subunits provided structural restraints to build a detailed atomic model of the COX-AIFM12 complex. Application of two complementary proteomic approaches thus provided unexpected insight into the macromolecular organization of the mitochondrial complexome. Our structural model excludes direct electron transfer between AIFM1 and COX. Notably however, the binding site of cytochrome c remains accessible allowing formation of a ternary complex. The discovery of the previously overlooked COX-AIFM12 complex and clues provided by the structural model hint at a role of AIFM1 in OXPHOS biogenesis and in programmed cell death.
HostingRepository	PRIDE
AnnounceDate	2021-09-09
AnnouncementXML	Submission_2021-09-09_05:48:11.226.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Johannes Hevler
SpeciesList	scientific name: Bos taurus (Bovine); NCBI TaxID: 9913;
ModificationList	acetylated residue; monohydroxylated residue; iodoacetamide derivatized residue
Instrument	Orbitrap Fusion Lumos

Revision	Datetime	Status	ChangeLog Entry
0	2021-03-30 04:52:05	ID requested
⏵ 1	2021-09-09 05:48:11	announced
2	2023-05-14 14:13:13	announced	2023-05-14: Updated project metadata.

Dataset with its publication pending

submitter keyword: bovine heart mitochondria, XL-MS, COX, AIFM1, structural docking

Albert J.R. Heck
contact affiliation	Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, University of Utrecht
contact email	a.j.r.heck@uu.nl
lab head
Johannes Hevler
contact affiliation	Utrecht University
contact email	j.f.hevler@uu.nl
dataset submitter

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/2021/09/PXD025102

PRIDE project URI

• PRIDE
  1. PXD025102
     1. Label: PRIDE project
     2. Name: Molecular characterization of a complex of Apoptosis Inducing Factor 1 (AIFM1) with cytochrome c oxidase of the mitochondrial respiratory chain