The eukaryotic nucleosome prevents access to the genome. Convergently evolving histone isoforms, also called histone variants, form diverse families that are enriched over distinct features of plant genomes. Among the diverse families of plant histone variants, H2A.Z exclusively marks genes. Here we review recent research progress on the genome-wide distribution patterns and deposition of H2A.Z in plants as well as its association with histone modifications and roles in plant chromatin regulation. We also discuss some hypotheses that explain the different findings about the roles of H2A.Z in plants.

中文翻译：

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拟南芥中的 H2A 变异体：基因组活性的多功能调节因子

真核核小体阻止进入基因组。趋同进化的组蛋白亚型（也称为组蛋白变体）形成不同的家族，这些家族丰富了植物基因组的不同特征。在植物组蛋白变体的不同家族中，H2A.Z 专门标记基因。本文综述了H2A.Z在植物中的全基因组分布模式和沉积及其与组蛋白修饰的关系和在植物染色质调控中的作用的最新研究进展。我们还讨论了一些假设，这些假设解释了 H2A.Z 在植物中的作用的不同发现。