The PHD finger: a versatile epigenome reader.

The PHD finger: a versatile epigenome reader.
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DOI:
10.1016/j.tibs.2011.03.005
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发表时间:
2011-07
影响因子:
13.8
通讯作者:
Zhou, Ming-Ming
Zhou, Ming-Ming
中科院分区:
生物学1区
文献类型:
--
作者:
Sanchez, Roberto;Zhou, Ming-Ming

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PHD(planthomeodomain)锌指结构是一类结构保守的蛋白质模块,在基因转录过程中起着修饰染色质和介导分子间相互作用的作用。它们在基因转录中的作用的最初发现归因于赖氨酸甲基化组蛋白H3的识别。最近的研究表明,PHD指具有复杂的组蛋白序列阅读能力,其通过不同组蛋白修饰之间的相互作用来调节。这些研究强调了PHD指作为表观基因组阅读器的功能多样性,其通过染色质调节因子和转录因子的多蛋白复合物的分子募集来控制基因表达。此外,它们强化了这样的概念,即保守结构折叠上的配体结合位点周围的氨基酸的进化变化赋予该蛋白质家族巨大的功能多样性。
PHD (plant homeodomain) zinc fingers are structurally conserved modules found in proteins that modify chromatin as well as mediate molecular interactions in gene transcription. The original discovery of their role in gene transcription is attributed to the recognition of lysine-methylated histone H3. Recent studies show that PHD fingers have a sophisticated histone sequence reading capacity that is modulated by the interplay between different histone modifications. These studies underscore the functional versatility of PHD fingers as epigenome readers that control gene expression through molecular recruitment of multi-protein complexes of chromatin regulators and transcription factors. Moreover, they reinforce the concept that evolutionary changes in amino acids surrounding ligand binding sites on a conserved structural fold impart great functional diversity upon this family of proteins.
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