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Updated: Mar 10, 2026

Pattern-based Search of Epigenomic Data Using GeNemo
Published on: October 8, 2017
Spatial controls of homology search
Aurèle Piazza1, Angela Taddei2
1Université de Lyon, ENS de Lyon, Université Claude Bernard, CNRS UMR5239, Laboratoire de Biologie et Modélisation de la Cellule, Lyon, France.
Homologous recombination uses RecA/Rad51 filaments to find DNA templates for double-strand break repair. Recent advances reveal this homology search is orchestrated by 3D chromatin organizers and filament dynamics.
Area of Science:
- Molecular Biology
- Genetics
- Cell Biology
Background:
- Homologous recombination (HR) is a crucial DNA repair pathway for double-strand breaks (DSBs).
- The RecA/Rad51 protein family forms filaments to catalyze the search for homologous DNA templates.
- This search requires the interaction of RecA/Rad51 filaments with the target DNA within the nuclear environment.
Purpose of the Study:
- To review recent advances in understanding the homology search mechanism in DNA repair.
- To establish a novel framework for the homology search process.
- To compare homology search strategies in eukaryotes and bacteria.
Main Methods:
- Review of orthogonal methodological developments.
- Analysis of 3D chromatin organization.
- Investigation of RecA/Rad51 filament structure and dynamics.
Main Results:
- The homology search is a choreographed process.
- 3D chromatin organizers play a role in controlling homology search.
- RecA/Rad51 filament structure and dynamics are critical for homology search.
Conclusions:
- A novel framework for understanding homology search has been established.
- Commonalities and distinctions exist in homology search facilitation between eukaryotes and bacteria.
- Outstanding questions regarding the homology search mechanism remain.
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