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4,6 Sulfur metabolism stabilizes one-carbon flux and S-adenosylmethionine (SAM) availability for DNA and histone methylation

Lipid peroxides and their metabolites, such as malondialdehyde (MDA) and 4-hydroxynonenal, damage proteins, membrane integrity, and DNA structure, leading to cell membrane hyperpermeability and ferroptosis (Lei et al., 2022)

The first step is mediated by -glutamylcysteine synthetase (GCLC), which catalyzes the -amide bond between the -carboxyl group of glutamate and the amino group of cysteine to form -glutamyl-cysteine (-Glu-Cys)