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Updated: May 21, 2025

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Mitoregulin, a tiny protein at the crossroads of mitochondrial functioning, stress, and disease

Petr Sergiev1,2,3, Olga Averina1, Julia Golubeva1,2

  • 1Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia.

Frontiers in Cell and Developmental Biology
|March 20, 2025
PubMed

Insights

Mitoregulin (Mtln), a recently identified mitochondrial protein, plays a key role in cellular functions like energy metabolism and lipid homeostasis. Research highlights its impact on mammalian physiology, affecting organs like muscle and kidney.

Area of Science:

  • Mitochondrial biology
  • Molecular mechanisms
  • Mammalian physiology

Background:

  • Mitoregulin (Mtln) is a recently identified small mitochondrial protein.
  • Numerous studies have investigated Mtln's function, localization, and interactions.
  • Existing research presents some contradictory findings regarding Mtln's roles.

Purpose of the Study:

  • To provide a comprehensive review of published data on Mitoregulin (Mtln).
  • To offer a unified perspective on Mtln's functions, reconciling existing controversies.
  • To connect molecular mechanisms to organism-level effects of Mtln.

Main Methods:

  • Literature review of published studies on Mitoregulin (Mtln).
  • Analysis of data from knockout and transgenic mouse models.
  • Synthesis of information on Mtln's localization, partners, and physiological roles.

Main Results:

  • Mtln is involved in lipid homeostasis, energy metabolism, and oxidative stress.
  • Mtln dysfunction is linked to metabolic changes and phenotypes in muscle, kidney, and fat.
  • Studies reveal Mtln's protein and lipid partners and its mitochondrial localization.

Conclusions:

  • Mitoregulin (Mtln) is crucial for mammalian physiology, impacting multiple organ systems.
  • A unified view of Mtln's functions is emerging despite some remaining controversies.
  • Understanding Mtln's molecular mechanisms is key to comprehending its organism-level effects.
Keywords:
Mtlncardiolipinmembranemitochondriarespirationsmall peptide

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