Related Experiment Video
Updated: Jan 22, 2026
08:16
In Vitro Characterization of Histone Chaperones using Analytical, Pull-Down and Chaperoning Assays
Published on: December 29, 2021
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ATAD2 mediates chromatin-bound histone chaperone turnover
Ariadni Liakopoulou1, Fayçal Boussouar1, Daniel Perazza1
1Université Grenoble Alpes, INSERM U1209, CNRS UMR 5309, Institute for Advanced Biosciences, Grenoble, France.
Elife
|January 20, 2026
Summary
The protein ATAD2 regulates chromatin plasticity and histone chaperone turnover. This study shows ATAD2 is crucial for genome organization and gene transcription during mouse spermatogenesis.
Area of Science:
- Molecular Biology
- Genetics
- Cell Biology
Background:
- ATAD2 (ATPase Associated With Diverse Budgets 2) is a conserved protein found in embryonic stem (ES) cells and spermatogenic cells.
- Previous studies highlighted ATAD2's role in chromatin-bound histone chaperone turnover in ES cells and S. pombe.
Purpose of the Study:
- To investigate the function of ATAD2 in mouse spermatogenesis.
- To elucidate ATAD2's role in chromatin condensation and genome packaging in mature sperm.
Main Methods:
- Focusing on mouse spermatogenesis.
- Investigating ATAD2's regulation of HIRA-dependent H3.3 localization and transcription.
- Analyzing the impact of Atad2 disruption on genome organization.
Main Results:
- ATAD2 regulates H3.3 localization and transcription during mouse spermatogenesis.
- ATAD2 modulates histone eviction and protamine assembly for chromatin condensation.
- Disruption of Atad2 leads to abnormal genome organization in mature spermatozoa.
Conclusions:
- ATAD2 governs a critical level of chromatin dynamic regulation via histone chaperone binding.
- ATAD2 controls the balance between histone deposition and removal, essential for proper genome packaging.
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