含有蛋白质 PyYEATS 的 YEATS 域在红色海藻 Pyropia yezoensis 中作为基因素乙化读取器起作用
Ying Pang1, Fugeng Tang1, Jenifer Pozas2
1College of Marine Life Sciences, Ocean University of China, Qingdao, China.
Journal of phycology
|June 4, 2025
概括
研究人员在红色海藻Pyropia yezoensis中发现了一种新的蛋白质PyYEATS. 这种蛋白质结合到特定的基因素乙化标记,这表明在这种重要的海洋作物中,它在应激反应和潜在的超转录功能中发挥了作用.
科学领域:
- 海洋生物学 海洋生物学
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 皮罗皮亚 (Pyropia yezoensis) 是一种重要的经济红色海藻,也是研究的模型生物.
- 已知 histone 乙化对于 P. yezoensis 的压力反应和子形成至关重要.
- 在P. yezoensis中读取基因素乙化标记的蛋白质以前未被确定.
研究的目的:
- 描述编码P. yezoensis. YEATS域含有蛋白质 (PyYEATS) 的基因.
- 研究PyYEATS蛋白的结合偏好和相互作用.
- 探索PyYEATS在P. yezoensis.压力反应中的潜在作用.
主要方法:
- 基因表征和蛋白质局部化研究.
- 在体外结合试验测试以确定基因素乙化点.
- 酵母两混合和GST拉下测试以识别蛋白质相互作用体.
- 在压力条件下对基因表达的定量分析.
主要成果:
- PyYEATS 蛋白主要局部在核中,含有保存的 YEATS 域.
- PyYEATS优先结合H3K14ac,H3K18ac和H4K5ac,特定的残留物对这种亲和力至关重要.
- PyYEATS与S-adenosyl-L-homocysteine水解酶 (SAHase),真核细胞转化启动因子3 (eIF3) 和actin.com进行相互作用.
- 在受伤后,pyYEATS基因表达显著增加,这表明它在应激反应中的作用.
结论:
- PyYEATS作为P. yezoensis.中素乙化标记的特定阅读器.
- 这种蛋白质通过与SAHase和eIF3.3的相互作用可能具有超转录功能.
- PyYEATS很可能参与红色海藻的应激反应机制.
- 这些发现提供了关于红藻中染色体读者的演变的见解.
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