大黄 (Pseudosciaena crocea,Richardson) E2F4,一个循环素依赖的转录因子,与DP1形成异构体
Xiaohui Cai1, Honglin Chen2, Jing Fang1
1Guangxi Key Laboratory of Beibu Gulf Marine Biodiversity Conservation, College of Marine Sciences, Beibu Gulf University, Qinzhou 535011, China.
International journal of molecular sciences
|June 13, 2025
概括
研究人员在大型黄色鱼中确定了八个E2F转录因子和一个二分化伙伴 (PcDP1). 他们发现PcE2F4与PcDP1相互作用,这表明它在调节细胞周期和免疫路径方面发挥了作用.
科学领域:
- 分子生物学分子生物学
- 基因组学就是基因组学.
- 鱼类生物学 鱼类生物学
背景情况:
- E2F转录因子是细胞周期进展的关键调节者,特别是G1-S阶段过渡和DNA合成.
- 这些因子与DP蛋白 (DP1或DP2) 作为异构体起作用,而二聚化域介导蛋白质与蛋白质的相互作用.
研究的目的:
- 识别和表征E2F转录因子及其二元化伙伴在大型黄色鱼 (Pseudosciaena crocea).
- 研究已识别的E2F蛋白与二聚化伙伴PcDP1.1之间的相互作用.
- 探索E2F/DP1异构体在调节细胞循环和免疫路径方面的潜在作用.
主要方法:
- 在大型黄色鱼中对E2F转录因子 (PcE2F1-8) 和二分化伙伴 (PcDP1) 的全基因组鉴定.
- 保存域 (DBD,DD) 的生物信息分析和NLS和NES等功能域的预测.
- 使用酵母二杂交和双分子光补充 (BiFC) 试验验证蛋白相互作用的实验验证.
- 在健康鱼的各种组织中使用RT-qPCR对基因表达模式的分析.
主要成果:
- 发现了8个E2F基因 (PcE2F1-8) 和一个PcDP1基因. PcE2F1-6具有DNA结合和二元化域,而PcE2F7-8缺乏二元化域.
- 序列分析揭示了 PcE2F 蛋白质之间不同的域特征,包括口袋蛋白质结合域和核定位信号 (NLS).
- 酵母双杂交和BiFC测定证实了PcE2F4和PcDP1.4之间的直接相互作用. RT-qPCR显示PcE2F1-6的组织特异性表达模式,在肝脏,脏,大脑和中表达高.
结论:
- 这项研究确定了关键的E2F转录因子和大型黄色鱼中的二元化合作伙伴.
- 在实验中验证了PcE2F4和PcDP1之间的直接相互作用,表明E2F4/DP1异构体的形成.
- 这种相互作用很可能参与调节细胞循环进展和与免疫相关的途径的大黄鱼.
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