Lysine Crotonylation: An Emerging Player in DNA Damage Response

Area of Science:

• Molecular Biology
• Epigenetics
• Biochemistry

Background:

• The DNA damage response (DDR) network maintains genome stability against genotoxic stress.
• Posttranslational modifications (PTMs) are key regulators within the DDR.
• Lysine crotonylation (Kcr) is an emerging PTM linking metabolism and gene regulation.

Purpose of the Study:

• To review the regulatory mechanisms of Kcr.
• To summarize Kcr's functions in the DNA damage response.
• To highlight Kcr's role in transcriptional repression and DNA repair.

Main Methods:

• Literature review of recent studies on Kcr and DDR.
• Analysis of Kcr's involvement in double-strand break (DSB) response.
• Examination of Kcr's role in DNA replication stress.

Main Results:

• Kcr is a reversible acylation modification regulated by acylases/deacylases and crotonyl-CoA.
• Kcr influences transcriptional repression following DSBs.
• Kcr is implicated in DSB repair and replication stress response.

Conclusions:

• Kcr is a significant PTM with critical roles in DDR pathways.
• Understanding Kcr regulation and function is vital for genome stability.
• Kcr represents a novel target for therapeutic interventions in related diseases.