Site-Specific Systematic Analysis of Lysine Modification Crosstalk.

Area of Science:

• Biochemistry
• Molecular Biology
• Genomics

Background:

• Post-translational modifications (PTMs) on lysine residues (PLMs) are crucial for regulating biological processes through crosstalk.
• Understanding the patterns and properties of crosstalk among multiple PLMs requires further investigation.

Purpose of the Study:

• To systematically investigate the crosstalk among acetylation, succinylation, and SUMOylation at specific lysine sites.
• To analyze the tissue-specificity, subcellular localization, and functional implications of PLM crosstalk.

Main Methods:

• Site-specific analysis of crosstalk between SUMOylation, acetylation, and succinylation.
• Comparative analysis of PLM crosstalk across different tissues and species.
• Evolutionary analysis of PLM crosstalk sites using phylogenetic classification.

Main Results:

• SUMOylation and succinylation crosstalk was detected, with succinylation often underexpressed.
• PLM crosstalk is tissue-specific and occurs at diverse subcellular compartments and structural regions.
• Genes with co-occupied lysine crosstalk sites show higher evolutionary similarity and tend to cluster phylogenetically.

Conclusions:

• PLM crosstalk is a significant regulatory mechanism with tissue-specific characteristics.
• The study provides insights into the evolutionary patterns and functional roles of lysine modification crosstalk.
• The integrated approach can facilitate large-scale identification and understanding of PLM crosstalk events.