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2016•Nucleic Acids ResearchOpen access

New players in heterochromatin silencing: histone variant H3.3 and the ATRX/DAXX chaperone

Hsiao P. J. Voon, Lee H. Wong

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Abstract

A number of studies have demonstrated that various components of the ATRX/DAXX/Histone H3.3 complex are important for heterochromatin silencing at multiple genomic regions. We provide an overview of the individual components (ATRX, DAXX and/or H3.3) tested in each study and propose a model where the ATRX/DAXX chaperone complex deposits H3.3 to maintain the H3K9me3 modification at heterochromatin throughout the genome.

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What this paper is about

A number of studies have demonstrated that various components of the ATRX/DAXX/Histone H3.3 complex are important for heterochromatin silencing at multiple genomic regions. We provide an overview of the individual components (ATRX, DAXX and/or H3.3) tested in each study and propose a model where the ATRX/DAXX chaperone complex deposits H3.3 to maintain the H3K9me3 modification at heterochromatin throughout the genome.

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Available abstract

A number of studies have demonstrated that various components of the ATRX/DAXX/Histone H3.3 complex are important for heterochromatin silencing at multiple genomic regions. We provide an overview of the individual components (ATRX, DAXX and/or H3.3) tested in each study and propose a model where the ATRX/DAXX chaperone complex deposits H3.3 to maintain the H3K9me3 modification at heterochromatin throughout the genome.

Key concepts: Death-associated protein 6, ATRX, Heterochromatin, Biology, Heterochromatin protein 1, Histone, Genetics, Histone H3

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