Leonhardt Heinrich, Hake Sandra B
Department of Biology II, Humanbiology and Bioimaging, Center for Integrated Protein Science (CIPSM), Ludwig Maximilians University Munich, 82152 Planegg-Martinsried, Germany.
Molecular Biology Unit, Adolf-Butenandt-Institute, Center for Integrated Protein Science Munich (CIPSM), Ludwig Maximilians University Munich, 80336 Munich, Germany.
Cell Res. 2014 Mar;24(3):261-2. doi: 10.1038/cr.2014.22. Epub 2014 Feb 14.
Chemical modifications of histone proteins directly and indirectly affect chromatin structure and thereby contribute to the multilayered control of diverse DNA-based processes. A recent study in Nature enriches this list of enzyme-dependent posttranslational histone marks by H2A glutamine methylation that appears to be dedicated to only one specific cellular process, the regulation of nucleolar rDNA transcription.
组蛋白的化学修饰直接或间接地影响染色质结构,从而有助于对多种基于DNA的过程进行多层次控制。《自然》杂志最近的一项研究丰富了这一依赖酶的组蛋白翻译后修饰标记清单,新增了H2A谷氨酰胺甲基化,它似乎仅作用于一个特定的细胞过程,即核仁rDNA转录的调控。