相关实验视频
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Monitoring eIF4F Assembly by Measuring eIF4E-eIF4G Interaction in Live Cells
Published on: May 1, 2020
一个转录适应蛋白的家族,被E1Acoprotein所准
Nature
|March 2, 1995
概括
腺病毒E1A瘤蛋白向p300和CBP,它们是转录适应蛋白. E1A 抑制了 p300300 的作用.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 病毒学 病毒学
背景情况:
- p300蛋白调节细胞循环,增强剂和分化.
- CBP蛋白与CREB转录因子和循环AMP诱导的促进体一起激活.
- p300和CBP具有非常相似的序列.
研究的目的:
- 调查p300,CBP和腺病毒E1A之间的功能关系.
- 为了确定E1A是否抑制p300和CBP的转录活性.
- 探索E1A和CBP之间的体内相互作用.
主要方法:
- 通过p300.00评估转录刺激.
- 测试E1A对p300活动的抑制作用.
- 调查CBP与DNA结合的CREB家族成员的关联.
- 在体内检查E1A和CBP的相互作用.
主要成果:
- p300刺激转录,而这种活动被E1A特别抑制.
- CBP与CREB家族成员形成DNA结合的复合体.
- E1A和CBP在体内相互作用.
- E1A抑制了cAMP依赖的转录,这表明CBP的功能向.
结论:
- p300和CBP构成一个转录适应蛋白家族.
- 腺病毒E1A瘤蛋白特别针对这个p300/CBP蛋白家族.
- E1A与CBP的相互作用和转录活性的抑制是病毒瘤发生的关键机制.
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