双编码基因SLC35A4可以防止氧化应激
Ikram Ajala1,2,3, Imadeddine Tiaiba1,2,3, Benoît Grondin1,2,3
1Département des Sciences Biologiques, Université du Québec à Montréal, Montréal, Quebec, Canada.
Protein science : a publication of the Protein Society
|June 23, 2025
概括
从替代开放阅读框架 (AltORFs) 编码的替代蛋白质 (AltProts) 在细胞应激抵抗中发挥关键作用. 这项研究证实了AltSLC35A4A4的存在.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 遗传学 是一个遗传学.
背景情况:
- 替代蛋白质 (AltProts) 是生物活性蛋白质,其编码来自注释基因内的替代开放阅读框架 (AltORFs).
- 该SLC35A4基因编码了一个参考蛋白 (SLC35A4) 和一个替代蛋白 (AltSLC35A4).
- 以前的研究表明,在氧化应激过程中,SLC35A4的翻译效率增加.
研究的目的:
- 为了研究AltSLC35A4.4的局部和功能.
- 确认在氧化应激下SLC35A4和AltSLC35A4的转化调节.
- 确定SLC35A4和AltSLC35A4在细胞抗氧化应激的作用.
主要方法:
- 显微镜和生物化学分析以确定蛋白质定位.
- 核糖体概况和西部抹杀来评估蛋白质表达和翻译效率.
- 基因淘汰研究评估对氧化应激敏感性的影响.
主要成果:
- AltSLC35A4定位在线粒体内膜中.
- 氧化应激诱导SLC35A4的翻译上调,但不是AltSLC35A4.
- SLC35A4或AltSLC35A4的淘汰会增加对氧化应激的敏感性.
结论:
- SLC35A4的双编码性质对氧化应激抵抗具有功能意义.
- 由AlTORFs编码的AltProts对于真核生物基因功能和细胞适应非常重要.
- 这项研究解决了关于AltSLC35A4定位的相互矛盾的报告,并确定了它在应激反应中的作用.
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