Sulphur-Containing Amino Acids Promote The Expression Of Cg33474 And Its Neighbouring Genes Through The Transsulphuration Pathway

Aging Pathway
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Sulfur-containing amino acids promote the expression of a specific gene, CG33474, and its nearby genes through a metabolic process called the transsulphuration pathway, contributing to antioxidant effects and extended lifespan in fruit flies.
Author

Gemini

Published

April 23, 2026

Our bodies rely on essential building blocks called sulfur-containing amino acids, such as methionine and cysteine, which are known for their roles in protecting cells from damage and potentially slowing down aging. Recent research has shed light on how these important compounds work at a genetic level. Scientists investigated a particular gene, previously linked to fat reduction and the increase of tiny cellular compartments called peroxisomes, which are crucial for metabolism. The study found that these sulfur-containing amino acids activate this gene and several of its neighbors through a specific metabolic route known as the transsulphuration pathway. This pathway is a series of chemical reactions that converts one type of amino acid into another and produces other vital molecules. The key finding is that the products generated within this transsulphuration pathway are responsible for turning on these genes. This activation of genes by sulfur-containing amino acids appears to play a role in helping organisms resist various stresses and even extends their lifespan, as observed in fruit flies. These discoveries provide a more detailed understanding of the mechanisms behind the beneficial antioxidant effects of sulfur-containing amino acids.


Source: link to paper