强大的PHL4转录因子效应因子域包含显著的疾病
Blake D Fonda1, Dylan T Murray2
1Department of Chemistry, University of California, Davis, California, USA.
Protein science : a publication of the Protein Society
|November 16, 2024
概括
酸盐饥饿反应类蛋白-4 (PHL4) 是一个转录因子 (TF),具有高度活跃的域. 结构分析显示,PHL4本质上有N和C末端区域失序,在中心形成有序的寡合体.
科学领域:
- 植物分子生物学 植物分子生物学
- 蛋白质的结构和功能.
- 基因调节 基因调节
背景情况:
- 酸盐饥饿反应转录因子 (TFs) 对植物适应低酸盐条件至关重要.
- 这些TFs调节基因表达,包括用于酸生物可用性的酸酶生产.
- 对于这个TF家族,存在有限的结构数据,特别是对于它们的激活域.
研究的目的:
- 描述酸盐饥饿反应类蛋白-4 (PHL4) 的结构和组合.
- 研究PHL4.的高活性N端TF激活域的性质.
- 了解全长PHL4.4的寡合状态和结构组织.
主要方法:
- 解决方案核磁共振 (NMR) 光谱学. 解决方案核磁共振 (NMR) 光谱学.
- 尺寸排除色谱. 大小排除色谱.
- 扩散NMR测量. 分散NMR测量.
- 交叉链接测试.交叉链接测试.
主要成果:
- PHL4的N端TF效应器域本质上是无序的,覆盖了200多个残留物.
- 发现PHL4的C终端区域也存在混乱.
- 全长的PHL4存在于三重体或四重体组件中,无序的末端绕着一个中央折叠区域.
结论:
- PHL4具有内在无序的N和C终端域,它们围绕着一个中央有序的寡合核心.
- 这种结构组织为了解PHL4在酸盐代谢中的强有力的转录激活提供了基础.
- 对PHL4结构和功能的洞察力可以帮助基因工程增强基因激活.
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