Gatekeepers of chromatin: Small metabolites elicit big changes in gene expression.

Gatekeepers of chromatin: Small metabolites elicit big changes in gene expression.
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DOI:
10.1016/j.tibs.2012.07.008
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发表时间:
2012-11
影响因子:
13.8
通讯作者:
Tu BP
Tu BP
中科院分区:
生物学1区
文献类型:
--
作者:
Kaochar S;Tu BP

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真核生物不断微调其基因表达程序,以响应环境的需求和营养物质的可用性。基因组的这种动态调节需要多样的染色质结构。转录水平的快速变化是通过控制染色质结构的组蛋白的广泛的翻译后修饰引起的。许多负责这些修饰的酶已被鉴定,它们需要各种代谢辅因子或底物才能发挥活性。在此,我们强调了最近的发展,已经开始揭示特定的细胞代谢物,实际上可能是低估的基因表达的调节剂,通过其调节特定组蛋白修饰的能力。
Eukaryotes are constantly fine-tuning their gene expression programs in response to the demands of the environment and the availability of nutrients. Such dynamic regulation of the genome necessitates versatile chromatin architecture. Rapid changes in transcript levels are brought about via a wide range of posttranslational modifications of the histone proteins that control chromatin structure. Many enzymes responsible for these modifications have been identified and they require various metabolic cofactors or substrates for their activity. Herein, we highlight recent developments that have begun to reveal particular cellular metabolites that might in fact be underappreciated regulators of gene expression through their ability to modulate particular histone modifications.
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