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The mammalian longevity associated acetylome.

S Feldman-Trabelsi1,2, N Touitou1,2, R Nagar1,2

  • 1The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel.

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This summary is machine-generated.

Protein acetylation, a key modification, influences mammalian longevity. Our study links conserved acetylation patterns to lifespan, identifying specific lysine residues and pathways involved in aging.

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Area of Science:

  • Biochemistry
  • Genomics
  • Computational Biology

Background:

  • Mechanisms regulating longevity remain incompletely understood despite extensive multi-omic studies.
  • Post-translational protein acetylation is a proposed regulator of aging processes.

Purpose of the Study:

  • To investigate the role of protein acetylation in mammalian longevity.
  • To identify longevity-associated acetylation sites and pathways using a novel computational tool.

Main Methods:

  • Development of the PHARAOH computational tool utilizing mammalian longevity differences.
  • Analysis of acetylome and proteome data from 107 mammalian species.
  • Pathway enrichment analysis and experimental validation of identified sites.

Main Results:

  • Identification of 482 and 695 longevity-associated acetylated lysine residues in mice and humans, respectively.
  • Observed conservation or substitution patterns of acetylated lysines, glutamine, and arginine correlating with lifespan.
  • Pathway analysis implicated mitochondrial translation, cell cycle, and DNA repair in longevity.
  • Experimental validation confirmed the impact of specific acetylation site substitutions on enzyme activity and function.

Conclusions:

  • A significant link exists between conserved protein acetylation patterns and mammalian longevity.
  • Specific acetylation sites and associated pathways are crucial determinants of lifespan.
  • Protein acetylation represents a potential target for interventions aimed at promoting longevity.