University of Cologne Finds Leucine Boosts Cell Energy by Protecting Mitochondrial Proteins
Updated
Updated · ScienceDaily · Oct 3
University of Cologne Finds Leucine Boosts Cell Energy by Protecting Mitochondrial Proteins
2 articles · Updated · ScienceDaily · Oct 3
Summary
Nature Cell Biology research from the University of Cologne found leucine raises cellular energy output by preventing destruction of key proteins on mitochondria’s outer membrane.
SEL1L, a protein-quality-control factor, appears to be the switch: leucine dampens its activity, leaving more mitochondrial proteins in place to support respiration when nutrients are abundant.
Worm experiments linked faulty leucine breakdown to disrupted mitochondria and fertility problems, while tests in human lung cancer cells suggested some leucine-metabolism mutations can help tumors survive.
The findings point to leucine- and SEL1L-related pathways as possible targets in metabolic disorders and cancer, though the researchers cautioned that suppressing protein cleanup could also let damaged proteins accumulate.