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发现和分析蛋白质氨酸的S-2-Carboxypropylation的发现和分析

Jiabao Song¹, Kejun Yin², Ronghu Wu²

¹Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, GA 30602, USA.

Molecules (Basel, Switzerland)

|November 13, 2025

概括

甲基烯基-CoA的积累是细胞毒性. 研究人员发现了一种新的蛋白质修饰,氨酸S-2-碳素化 (C2cp),由甲基烯-CoA引起,揭示了对氨酸代谢障碍的见解.

科学领域:

生物化学生物化学
蛋白质组学是指蛋白质组学.
代谢学代谢学代谢学

背景情况:

甲基烯基-CoA是一种氨酸代谢中间体,可以具有细胞毒性.
甲基-CoA和甲基酸盐对人类健康的生物学影响尚不清楚.
假设甲基基和蛋白质中的半氨酸残留物之间的潜在反应.

研究的目的:

为了研究甲基烯基-CoA的生物效应.
为了识别和表征一种由甲基烯-CoA产生的新型蛋白质转化后修饰 (PTM).
开发化学蛋白质组学方法来分析这一PTM.

主要方法:

生物直角化学探针的设计和应用,N-propargyl methacrylamide.
开发定量化化学蛋白质组学,用于全球和特定地点的分析.
对已识别的修饰蛋白质进行生物信息分析.

主要成果:

成功检测并分析了蛋白质氨酸S-2-碳素化 (C2cp).
在HEK293T细胞中鉴定了403个S-2-carboxypropylated蛋白和120个修饰位.
经C2cp修饰的蛋白质参与翻译,RNA剪接和蛋白质折叠.

结论:

半氨酸S-2-碳素化 (C2cp) 是一种由甲烯基-CoA介导的新型PTM.
这一发现为了解代谢障碍提供了一个新的生化机制.
化学蛋白质组分析揭示了C2cp在蛋白质组中的广泛性质.

关键词:

在PTM中,PTM是PTM.化学蛋白质组学化学蛋白质组半氨酸S-2-碳素化 (C2cp) 的方法甲基烯基-CoA是一种甲基烯基-CoA.瓦林代谢的代谢.

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