The yeast mitochondrial succinylome : Implications for regulation of mitochondrial nucleoids

Copyright © 2021 The Authors. Published by Elsevier Inc. All rights reserved..

Acylation modifications, such as the succinylation of lysine, are post-translational modifications and a powerful means of regulating protein activity. Some acylations occur nonenzymatically, driven by an increase in the concentration of acyl group donors. Lysine succinylation has a profound effect on the corresponding site within the protein, as it dramatically changes the charge of the residue. In eukaryotes, it predominantly affects mitochondrial proteins because the donor of succinate, succinyl-CoA, is primarily generated in the tricarboxylic acid cycle. Although numerous succinylated mitochondrial proteins have been identified in Saccharomyces cerevisiae, a more detailed characterization of the yeast mitochondrial succinylome is still lacking. Here, we performed a proteomic MS analysis of purified yeast mitochondria and detected 314 succinylated mitochondrial proteins with 1763 novel succinylation sites. The mitochondrial nucleoid, a complex of mitochondrial DNA and mitochondrial proteins, is one of the structures whose protein components are affected by succinylation. We found that Abf2p, the principal component of mitochondrial nucleoids responsible for compacting mitochondrial DNA in S. cerevisiae, can be succinylated in vivo on at least thirteen lysine residues. Abf2p succinylation in vitro inhibits its DNA-binding activity and reduces its sensitivity to digestion by the ATP-dependent ScLon protease. We conclude that changes in the metabolic state of a cell resulting in an increase in the concentration of tricarboxylic acid intermediates may affect mitochondrial functions.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:297

Enthalten in:

The Journal of biological chemistry - 297(2021), 4 vom: 05. Okt., Seite 101155

Sprache:

Englisch

Beteiligte Personen:

Frankovsky, Jan [VerfasserIn]
Keresztesová, Barbora [VerfasserIn]
Bellová, Jana [VerfasserIn]
Kunová, Nina [VerfasserIn]
Čanigová, Nikola [VerfasserIn]
Hanakova, Katerina [VerfasserIn]
Bauer, Jacob A [VerfasserIn]
Ondrovičová, Gabriela [VerfasserIn]
Lukáčová, Veronika [VerfasserIn]
Siváková, Barbara [VerfasserIn]
Zdrahal, Zbynek [VerfasserIn]
Pevala, Vladimír [VerfasserIn]
Procházková, Katarína [VerfasserIn]
Nosek, Jozef [VerfasserIn]
Baráth, Peter [VerfasserIn]
Kutejova, Eva [VerfasserIn]
Tomaska, Lubomir [VerfasserIn]

Links:

Volltext

Themen:

AB6MNQ6J6L
ABF2 protein, S cerevisiae
DNA–protein interaction
DNA-Binding Proteins
EC 3.4.21.53
Journal Article
Lysine succinylation
Mitochondria
Mitochondrial DNA
Mitochondrial Proteins
Mitochondrial nucleoid
Post-translational modification (PTM)
Protease La
Proteomics
Research Support, Non-U.S. Gov't
Saccharomyces cerevisiae Proteins
Succinic Acid
Succinylome
Transcription Factors
Yeast

Anmerkungen:

Date Completed 25.11.2021

Date Revised 25.11.2021

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.jbc.2021.101155

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM330233297