Ku Protein Oligomerization in Mycobacterium Tuberculosis Found to Enhance DNA Repair Efficiency

Researchers have identified new details about the DNA repair mechanisms of *Mycobacterium tuberculosis* (Mtb), the bacterium responsible for tuberculosis. A study published in *Nature Communications* reports that the Ku protein in Mtb undergoes oligomerization, a process where multiple Ku units assemble together. This structural change facilitates DNA synapsis, a critical step in repairing double-strand breaks in the bacterial genome.

The findings highlight how Ku proteins interact to stabilize broken DNA strands and promote their alignment during repair. The study provides evidence that oligomerization enhances the efficiency of this process, ensuring genomic integrity for Mtb’s survival under stress conditions. Researchers conducted molecular analyses to observe these interactions and confirmed that Ku’s ability to form complexes plays a vital role in maintaining the pathogen’s resilience.

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Date: November 27, 2025

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