The absence of functional CAF-1 results in deficiencies in H3.3 levels at transcribed loci in Arabidopsis

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ID: 326887
2026
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Abstract
Eukaryotic organisms organize their genetic material in chromatin rather than naked DNA. Efficient chromatin assembly is essential for all DNA-templated processes, including replication, transcription, and DNA repair. Our research focused on two major histone H3 deposition complexes: Chromatin Assembly Factor (CAF-1) and Histone Regulator A (HIRA). CAF-1 deposits canonical H3 on naked DNA immediately after replication during the S-phase in yeast and metazoans, and HIRA is thought to incorporate the H3.3 variant in a replication-independent manner. By combining biochemical, genetic, genomic, and proteomic data, we revealed that CAF-1 activity might be associated with the maintenance of the histone variant H3.3 in Arabidopsis chromatin. Moreover, this CAF-1's potential function in H3.3 homeostasis may be particularly significant in the transcribed regions of the genome.
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openalex_W7204898427 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Fan Yang, Yingpei Su, Weijie Xi, Yafei Wang, Israel Ausín
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Journal Plant physiology and biochemistry : PPB
Year 2026
DOI
10.1093/plphys/kiag648
URL
https://doi.org/10.1093/plphys/kiag648
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