Control of DNA methylation and heterochromatic silencing by histone H2B deubiquitination

Vaniyambadi V. Sridhar; Avnish Kapoor; Kangling Zhang; Jianjun Zhu; Tao Zhou; Paul M. Hasegawa; Ray A. Bressan; Jian Kang Zhu

doi:10.1038/nature05864

Control of DNA methylation and heterochromatic silencing by histone H2B deubiquitination

Vaniyambadi V. Sridhar, Avnish Kapoor, Kangling Zhang, Jianjun Zhu, Tao Zhou, Paul M. Hasegawa, Ray A. Bressan, Jian Kang Zhu

Genomic Medicine

Research output: Contribution to journal › Article › peer-review

213 Scopus citations

Abstract

Epigenetic regulation involves reversible changes in DNA methylation and/or histone modification patterns. Short interfering RNAs (siRNAs) can direct DNA methylation and heterochromatic histone modifications, causing sequence-specific transcriptional gene silencing. In animals and yeast, histone H2B is known to be monoubiquitinated, and this regulates the methylation of histone H3 (refs 10, 11). However, the relationship between histone ubiquitination and DNA methylation has not been investigated. Here we show that mutations in an Arabidopsis deubiquitination enzyme, SUP32/UBP26, decrease the dimethylation on lysine 9 of H3, suppress siRNA-directed methylation of DNA and release heterochromatic silencing of transgenes as well as transposons. We found that Arabidopsis histone H2B is monoubiquitinated at lysine 143 and that the levels of ubiquitinated H2B and trimethyl H3 at lysine 4 increase in sup32 mutant plants. SUP32/UBP26 can deubiquitinate H2B, and chromatin immunoprecipitation assays suggest an association between H2B ubiquitination and release of silencing. These data suggest that H2B deubiquitination by SUP32/UBP26 is required for heterochromatic histone H3 methylation and DNA methylation.

Original language	English (US)
Pages (from-to)	735-738
Number of pages	4
Journal	Nature
Volume	447
Issue number	7145
DOIs	https://doi.org/10.1038/nature05864
State	Published - Jun 7 2007

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title = "Control of DNA methylation and heterochromatic silencing by histone H2B deubiquitination",

abstract = "Epigenetic regulation involves reversible changes in DNA methylation and/or histone modification patterns. Short interfering RNAs (siRNAs) can direct DNA methylation and heterochromatic histone modifications, causing sequence-specific transcriptional gene silencing. In animals and yeast, histone H2B is known to be monoubiquitinated, and this regulates the methylation of histone H3 (refs 10, 11). However, the relationship between histone ubiquitination and DNA methylation has not been investigated. Here we show that mutations in an Arabidopsis deubiquitination enzyme, SUP32/UBP26, decrease the dimethylation on lysine 9 of H3, suppress siRNA-directed methylation of DNA and release heterochromatic silencing of transgenes as well as transposons. We found that Arabidopsis histone H2B is monoubiquitinated at lysine 143 and that the levels of ubiquitinated H2B and trimethyl H3 at lysine 4 increase in sup32 mutant plants. SUP32/UBP26 can deubiquitinate H2B, and chromatin immunoprecipitation assays suggest an association between H2B ubiquitination and release of silencing. These data suggest that H2B deubiquitination by SUP32/UBP26 is required for heterochromatic histone H3 methylation and DNA methylation.",

author = "Sridhar, {Vaniyambadi V.} and Avnish Kapoor and Kangling Zhang and Jianjun Zhu and Tao Zhou and Hasegawa, {Paul M.} and Bressan, {Ray A.} and Zhu, {Jian Kang}",

note = "Funding Information: Acknowledgements We thank R. Martienssen and Z. Lippman for providing primer information for transposon analysis; Y. Zhang for advice on ChDIP and deubiquitination assays and critical reading of the manuscript; M. Osley and D. Gottschling for providing yeast strains; and T. Jenuwin for the gift of antibody against dimethyl H3K9. This work was supported by a US National Institutes of Health grant to J.-K.Z.",

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AU - Kapoor, Avnish

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AU - Zhu, Jianjun

AU - Zhou, Tao

AU - Hasegawa, Paul M.

AU - Bressan, Ray A.

AU - Zhu, Jian Kang

N1 - Funding Information: Acknowledgements We thank R. Martienssen and Z. Lippman for providing primer information for transposon analysis; Y. Zhang for advice on ChDIP and deubiquitination assays and critical reading of the manuscript; M. Osley and D. Gottschling for providing yeast strains; and T. Jenuwin for the gift of antibody against dimethyl H3K9. This work was supported by a US National Institutes of Health grant to J.-K.Z.

PY - 2007/6/7

Y1 - 2007/6/7

N2 - Epigenetic regulation involves reversible changes in DNA methylation and/or histone modification patterns. Short interfering RNAs (siRNAs) can direct DNA methylation and heterochromatic histone modifications, causing sequence-specific transcriptional gene silencing. In animals and yeast, histone H2B is known to be monoubiquitinated, and this regulates the methylation of histone H3 (refs 10, 11). However, the relationship between histone ubiquitination and DNA methylation has not been investigated. Here we show that mutations in an Arabidopsis deubiquitination enzyme, SUP32/UBP26, decrease the dimethylation on lysine 9 of H3, suppress siRNA-directed methylation of DNA and release heterochromatic silencing of transgenes as well as transposons. We found that Arabidopsis histone H2B is monoubiquitinated at lysine 143 and that the levels of ubiquitinated H2B and trimethyl H3 at lysine 4 increase in sup32 mutant plants. SUP32/UBP26 can deubiquitinate H2B, and chromatin immunoprecipitation assays suggest an association between H2B ubiquitination and release of silencing. These data suggest that H2B deubiquitination by SUP32/UBP26 is required for heterochromatic histone H3 methylation and DNA methylation.

AB - Epigenetic regulation involves reversible changes in DNA methylation and/or histone modification patterns. Short interfering RNAs (siRNAs) can direct DNA methylation and heterochromatic histone modifications, causing sequence-specific transcriptional gene silencing. In animals and yeast, histone H2B is known to be monoubiquitinated, and this regulates the methylation of histone H3 (refs 10, 11). However, the relationship between histone ubiquitination and DNA methylation has not been investigated. Here we show that mutations in an Arabidopsis deubiquitination enzyme, SUP32/UBP26, decrease the dimethylation on lysine 9 of H3, suppress siRNA-directed methylation of DNA and release heterochromatic silencing of transgenes as well as transposons. We found that Arabidopsis histone H2B is monoubiquitinated at lysine 143 and that the levels of ubiquitinated H2B and trimethyl H3 at lysine 4 increase in sup32 mutant plants. SUP32/UBP26 can deubiquitinate H2B, and chromatin immunoprecipitation assays suggest an association between H2B ubiquitination and release of silencing. These data suggest that H2B deubiquitination by SUP32/UBP26 is required for heterochromatic histone H3 methylation and DNA methylation.

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Control of DNA methylation and heterochromatic silencing by histone H2B deubiquitination

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