H1 histones: current perspectives and challenges.

H1 histones: current perspectives and challenges.
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DOI:
10.1093/nar/gkt700
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发表时间:
2013-11
影响因子:
14.9
通讯作者:
Freitas MA
Freitas MA
中科院分区:
生物学2区
文献类型:
--
作者:
Harshman SW;Young NL;Parthun MR;Freitas MA

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H1和相关的连接组蛋白对于维持高级染色质结构和调节基因表达都很重要。接头组蛋白的生物学是复杂的,因为它们在进化上是可变的,以多种同种型存在,并且在它们的长的、非结构化的、NH 2-和COOH-末端尾部中经历各种各样的翻译后修饰。我们回顾了最近的进展,了解连接组蛋白的结构,遗传学和翻译后修饰,重点是这些蛋白质与DNA和转录调控因子的动态相互作用。我们还讨论了各种实验挑战的研究H1和相关蛋白质,包括免疫试剂的限制和实际困难的翻译后修饰的质谱分析。
H1 and related linker histones are important both for maintenance of higher-order chromatin structure and for the regulation of gene expression. The biology of the linker histones is complex, as they are evolutionarily variable, exist in multiple isoforms and undergo a large variety of posttranslational modifications in their long, unstructured, NH2- and COOH-terminal tails. We review recent progress in understanding the structure, genetics and posttranslational modifications of linker histones, with an emphasis on the dynamic interactions of these proteins with DNA and transcriptional regulators. We also discuss various experimental challenges to the study of H1 and related proteins, including limitations of immunological reagents and practical difficulties in the analysis of posttranslational modifications by mass spectrometry.
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