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人类蛋白棕转移酶基质发现的正交酶基质设计策略

Robbins Puthenveetil¹, Shelby A Auger², Natalia Gómez-Navarro¹

¹Section on Structural and Chemical Biology, Neurosciences and Cellular and Structural Biology Division, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20817, United States.

Journal of the American Chemical Society

|September 29, 2023

概括

研究人员开发了一种使用合成基质识别特定zDHHC酶的蛋白标的新方法,从而进一步了解蛋白棕化及其在疾病和病毒感染中的作用.

科学领域:

生物化学
分子生物学
细胞生理学

背景情况:

蛋白质棕化是一种广泛的脂质修饰,对细胞功能至关重要,有5000多种基质.
23种zDHHC酶催化棕化,但它们的基质特异性在很大程度上重叠,使研究复杂化.
现有的方法很难在不破坏细胞过程的情况下识别单个zDHHC酶基质.

研究的目的:

开发一个新的策略来划分单个zDHHC酶的生理基质.
验证已知的基质并发现人类zDHHC酶的新基质.
探索对 SARS-CoV-2 等病毒的宿主限制因子中的保存棕化.

主要方法:

使用与工程zDHHC酶兼容的合成直角基质.
应用该策略来识别两个人类zDHHC酶的基质.
研究了参与抗病毒防御的宿主限制因子中的保存棕化.

主要成果:

成功验证已知的蛋白质棕化基质.
确定了两个特定的人类zDHHC酶的新基质.
在病毒宿主限制因子中发现保存的棕化模式.

结论:

开发的方法可以精确识别zDHHC酶基质.
这种方法增强了对蛋白质脂化在细胞生理和疾病中的作用的理解.
这些发现有助于研究宿主-病原体相互作用和抗病毒机制.

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