欧核细胞转录因子的co-TF依赖的分歧涉及多个内在无序的区域
Lindsey F Snyder1, Emily M O'Brien2, Jia Zhao2,3
1Interdisciplinary Graduate Program in Genetics, University of Iowa, Iowa City, IA, USA.
Nature communications
|June 18, 2025
概括
转录因子 (TFs) 控制基因调节. 转基因固有无序区域 (IDR) 的分歧影响了它们的相互依赖和演变,影响了基因激活潜力和自身抑制.
科学领域:
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
- 进化生物学 进化生物学
背景情况:
- 转录因子 (TFs) 对于通过组合控制来调节真核细胞基因至关重要.
- 人们对TF相互依存的机制,演变和监管影响仍然不完全理解.
- 酵母酸盐饥饿 (PHO) 反应的自然变异为研究TF遗传基础和物种变异提供了一个模型.
研究的目的:
- 通过使用酵母PHO反应来研究转录因子相互依赖的遗传基础和物种变异.
- 阐明内在无序区域 (IDR) 在调节TF活动和相互依存方面的作用.
- 了解TF IDR分歧如何推动基因调节的演变.
主要方法:
- 在酵母菌种 (Saccharomyces cerevisiae和Candida glabrata) 中对TF结合亲和力和基因调节的比较分析.
- 应用机器学习和酵母单混合测试来识别TFs内的功能区域.
- 内在无序区域 (IDR) 的特征及其对TF激活和自身抑制的影响.
主要成果:
- 与Saccharomyces cerevisiae Pho4相比,Candida glabrata Pho4表现出更高的DNA结合亲和力,并调节更多的基因.
- 在C. glabrata Pho4中,两个内在无序区域 (IDR) 增强了其激活域的活动.
- 在S. cerevisiae Pho4中的IDR调节其活性,使辅因子相互作用成为可能,并在它们缺席时抑制活性.
结论:
- 内在无序区域 (IDR) 的分歧是转录因子相互依赖的演变的一个关键驱动因素.
- IDR变异影响TF激活潜力和自身抑制,从而塑造基因调节网络.
- 这项研究提供了关于TF结构演变如何影响跨物种的基因调节的见解.
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