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对于PHF7介导的基因组H3的基因基的分子基础

Hyun Sik Lee¹, Injin Bang², Junghyun You¹

¹Department of Biological Sciences, Seoul National University, Seoul 08826, Republic of Korea.

Genes & development

|November 22, 2023

概括

植物宿主群指蛋白7 (PHF7),是一种RING型E3结合酶,其结构已被阐明. 它的域协作招募泛素结合酶,并识别核细胞和基因组,用于泛素结合.

科学领域:

分子生物学分子生物学
结构生物学结构生物学
表观遗传学在表观遗传学中,表观遗传学是指表观遗传学.

背景情况:

环型E3链酶对于蛋白质无化至关重要,但它们的机制尚未完全理解.
植物主体指蛋白7 (PHF7) 是一种RING型E3结合酶,参与基因素泛化.
PHF7的指域 (ePHD,RING,PHD) 在其E3结合酶活性中的特定作用需要澄清.

研究的目的:

为了确定PHF7的晶体结构,与泛奎素结合酶 (E2) 复合.
阐明PHF7的E3结合酶活性背后的分子机制.
定义PHF7个别域在基质识别和酶招募中的不同作用.

主要方法:

进行X射线晶体学,以获得PHF7-E2复合物的结构.
在体外结合测试以评估特定领域的相互作用.
功能性测试以评估无处不在活动.

主要成果:

晶体结构显示E2酶招募通过RING域和C端PHD.介导.
N端延伸PHD (ePHD) 域与核细胞DNA结合.
在C端的PHD域特别识别素H3.

结论:

PHF7使用多域策略进行基质识别和E2招募.
ePHD和C终端PHD域在将PHF7向其基板时表现出不同的,但合作的角色.
这项研究提供了一个分子框架,以了解PHF7在基因素ubiquitination中的E3结合酶功能.

关键词:

E2 泛基素-结合酶-泛基素结合酶环E3无素结合酶的环E3.基因组 H3 基因组 H3 基因组植物本地主体 (PHD)植物本地主体指蛋白7 (PHF7)结构结构结构结构无处不在的化

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