菌体Phytophthora infestans的转录因子结合特征反映了保存和分离的进化模式,并预测了功能功能
Nguyen N T Vo1, Ally Yang2, Wiphawee Leesutthiphonchai1,3
1Department of Microbiology and Plant Pathology, University of California, Riverside, CA, 92521, USA.
BMC genomics
|July 23, 2024
概括
我们在Phytophthora infestans中确定了转录因子 (TF) 的DNA结合特异性,揭示了对基因调节和TF进化的洞察力. 这项工作为了解菌体发育和病原发生提供了基础.
科学领域:
- 分子生物学分子生物学
- 基因组学就是基因组学.
- 细胞微生物学的微生物学
背景情况:
- 转录因子 (TF) 调节对生长和发育至关重要的基因网络.
- 包括Phytophthora infestans在内的Oomycetes缺乏详细的TF DNA结合特异性数据.
- P. infestans 是一种模型生物体,用于研究型的生命阶段分化和病原性.
研究的目的:
- 确定和描述Phytophthora infestans中转录因子的DNA结合特异性.
- 了解TF家族在虫群中的进化动态和功能分歧.
- 建立一个资源来破译在斯特拉梅诺皮尔斯的转录调节.
主要方法:
- 基因组挖掘用于识别TF家族和基因.
- 蛋白质结合的寡核酸微阵列,以确定DNA结合偏好.
- 电泳运动转移测试 (EMSA) 和染色体免疫沉 (ChIP) 进行验证.
- 遗传学分析和体内记者基因测定以获得功能性见解.
主要成果:
- 来自22个家族的197个TF基因在P. infestans基因组中被确定.
- 确定了14个家族的73个TF的DNA结合特异性.
- TF DNA 结合偏好显示出与人类和植物的演化差异.
- 类似者表现出不同的表达模式,表明功能分歧.
- 根据目标促进者分析,TF被归类为发育调节剂或一般激活剂.
结论:
- 建立了一个关于P. infestansTF约束特异性的综合数据集,这是斯特拉门诺皮尔斯的第一个.
- 该资源将TF与其目标联系起来,有助于了解菌体化和宿主感染.
- 该研究提供了TF进化的见解,突出了在真核生物王国中保存和多样化的功能.
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