START域从一个单一的网络架构中生成paralog特定的规则
Ashton S Holub1,2, Sarah G Choudury1,3, Ekaterina P Andrianova4
1Department of Biology, University of Pennsylvania, Philadelphia, PA, 19104, USA.
Nature communications
|November 14, 2024
概括
转录因子 (TF) 的功能差异来自于共享结合位点的差异性使用,而不是不同的目标. START 域帮助像 CORONA 和 PHABULOSA 这样的 TF 从共同的网络中产生独特的结果.
科学领域:
- 分子生物学分子生物学
- 进化生物学 进化生物学
- 遗传学 是一个遗传学.
背景情况:
- 转录因子 (TF) 的功能分歧对进化至关重要,但人们对其了解甚少.
- 第三类家用地雷塞 (HD-ZIPIII) TFs,CORONA (CNA) 和PHABULOSA (PHB),是功能上不同的对应物.
研究的目的:
- 研究HD-ZIPIII TF对应物CNA和PHB之间的功能差异的机制驱动因素.
- 确定功能分歧是否来自于不同的基因标或共同标的差异调节.
主要方法:
- 对CNA和PHB的基因结合和调节进行比较分析.
- 检查START域在TF介导基因调节中的作用.
主要成果:
- CNA和PHB与几乎相同的基因组 (~99%) 结合.
- 这两种对应物通常都以相同的方向调节共享的目标基因.
- 功能分歧源于共享结合位点的反应差异,导致独特的基因调节.
- 脂质结合的START域影响了响应性和非响应性结合位点之间的区别.
结论:
- HD-ZIPIII TF的功能分歧是由共享绑定站点的差异性使用驱动的,而不是不同的目标或相反的监管.
- 特定于Paralog的转录结果是从一个共同的网络架构中生成的.
- START领域作为一个关键模块,在调解这种对对应器特定调节和驱动功能分歧方面发挥着重要作用.
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