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Sirtuin regulation

The buck stops with spermidine

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Sirtuins remove post-translationally added acyl groups from protein lysines. New work shows the surprising metabolic fate of acyl groups removed from mitochondrial proteins—they react nonenzymatically with essential polyamine spermidine, forming previously unknown monoacylated N-glutarylspermidines and diacylated N-glutaryl,N-acetylspermidines.

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Fig. 1: Protein deacylation in mitochondria produces N-acylspermidines.

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Correspondence to Anthony J. Michael.

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Michael, A.J. The buck stops with spermidine. Nat Chem Biol (2024). https://doi.org/10.1038/s41589-023-01510-3

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  • DOI: https://doi.org/10.1038/s41589-023-01510-3

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