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📄 原文题目

Unconventional monooxygenation by the O<sub>2</sub>-dependent tRNA wobble uridine hydroxylase TrhO

🔗 原文链接

💡 AI 核心解读

首次揭示了TrhO的冷冻电镜结构及其催化机制,阐明了其不依赖辅因子、通过反应性半胱氨酸中间体利用分子氧羟化tRNA摆动尿苷的非常规单加氧作用机制。

📝 英文原版摘要

<p>Nature Chemical Biology, Published online: 19 January 2026; <a href="https://www.nature.com/articles/s41589-025-02129-2">doi:10.1038/s41589-025-02129-2</a></p>Shin et al. report the cryo-electron microscopy structure and catalytic mechanism of TrhO, a cofactor-independent enzyme that hydroxylates tRNA wobble uridine using molecular oxygen through a reactive cysteine intermediate.
双重组改良型口服脊髓灰质炎疫苗2型霍乱弧菌血清型影响致病性
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