Distinctive Core Histone Post-Translational Modification Patterns in Arabidopsis thaliana.

Distinctive Core Histone Post-Translational Modification Patterns in Arabidopsis thaliana. Research Abstract Details 

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Distinctive Core Histone Post-Translational Modification Patterns in Arabidopsis thaliana. Abstract Text:

Kangling Zhang,Vaniyambadi V Sridhar,Jianhua Zhu,Avnish Kapoor,Jian-Kang Zhu,

Post-translational modifications of histones play crucial roles in the genetic and epigenetic regulation of gene expression from chromatin. Studies in mammals and yeast have found conserved modifications at some residues of histones as well as non-conserved modifications at some other sites. Although plants have been excellent systems to study epigenetic regulation, and histone modifications are known to play critical roles, the histone modification sites and patterns in plants are poorly defined. In the present study we have used mass spectrometry in combination with high performance liquid chromatography (HPLC) separation and phospho-peptide enrichment to identify histone modification sites in the reference plant, Arabidopsis thaliana. We found not only modifications at many sites that are conserved in mammalian and yeast cells, but also modifications at many sites that are unique to plants. These unique modifications include H4 K20 acetylation (in contrast to H4 K20 methylation in non-plant systems), H2B K6, K11, K27 and K32 acetylation, S15 phosphorylation and K143 ubiquitination, and H2A K144 acetylation and S129, S141 and S145 phosphorylation, and H2A.X S138 phosphorylation. In addition, we found that lysine 79 of H3 which is highly conserved and modified by methylation and plays important roles in telomeric silencing in non-plant systems, is not modified in Arabidopsis. These results suggest distinctive histone modification patterns in plants and provide an invaluable foundation for future studies on histone modifications in plants.

Distinctive Core Histone Post-Translational Modification Patterns in Arabidopsis thaliana. Publishing Authors By Initials

K Zhang,VV Sridhar,J Zhu,A Kapoor,JK Zhu,

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Distinctive Core Histone Post-Translational Modification Patterns in Arabidopsis thaliana. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: PLoS ONE

VOLUME: 2

Page Numbers: e1210

Journal Abbreviation: PLoS ONE

ISSN: 1932-6203

DAY: 21

MONTH: 11

YEAR: 2007

Distinctive Core Histone Post-Translational Modification Patterns in Arabidopsis thaliana. Information

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LANGUAGE: eng

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AFFILIATION: Mass Spectrometry Facility, School of Medicine, Loma Linda University, Loma Linda, California, United States of America.

Country: United States

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