Manganese-driven CoQ deficiency

Jutta Diessl, Jens Berndtsson, Filomena Broeskamp, Lukas Habernig, Verena Kohler, Carmela Vazquez-Calvo, Arpita Nandy, Carlotta Peselj, Sofia Drobysheva, Ludovic Pelosi, F.-Nora Vögtle, Fabien Pierrel, Martin Ott and Sabrina Büttner ()
Additional contact information
Jutta Diessl: Stockholm University
Jens Berndtsson: Stockholm University
Filomena Broeskamp: Stockholm University
Lukas Habernig: Stockholm University
Verena Kohler: Stockholm University
Carmela Vazquez-Calvo: Stockholm University
Arpita Nandy: ZBMZ, University of Freiburg
Carlotta Peselj: Stockholm University
Sofia Drobysheva: Stockholm University
Ludovic Pelosi: VetAgro Sup, Grenoble INP, TIMC
F.-Nora Vögtle: ZBMZ, University of Freiburg
Fabien Pierrel: VetAgro Sup, Grenoble INP, TIMC
Martin Ott: Stockholm University
Sabrina Büttner: Stockholm University

Nature Communications, 2022, vol. 13, issue 1, 1-14

Abstract: Abstract Overexposure to manganese disrupts cellular energy metabolism across species, but the molecular mechanism underlying manganese toxicity remains enigmatic. Here, we report that excess cellular manganese selectively disrupts coenzyme Q (CoQ) biosynthesis, resulting in failure of mitochondrial bioenergetics. While respiratory chain complexes remain intact, the lack of CoQ as lipophilic electron carrier precludes oxidative phosphorylation and leads to premature cell and organismal death. At a molecular level, manganese overload causes mismetallation and proteolytic degradation of Coq7, a diiron hydroxylase that catalyzes the penultimate step in CoQ biosynthesis. Coq7 overexpression or supplementation with a CoQ headgroup analog that bypasses Coq7 function fully corrects electron transport, thus restoring respiration and viability. We uncover a unique sensitivity of a diiron enzyme to mismetallation and define the molecular mechanism for manganese-induced bioenergetic failure that is conserved across species.

Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-33641-x

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DOI: 10.1038/s41467-022-33641-x

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