基因因和相关类化合物中的甲氧基组的生物合成起源
Blaise Kimbadi Lombe1, Tingan Zhou1, Lorenzo Caputi1
1Department of Natural Product Biosynthesis, Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, 07745, Jena, Germany.
Angewandte Chemie (International ed. in English)
|November 7, 2024
概括
类类化合物中的甲氧基组是早期添加到三胺中,而不是在途径的晚期. 这一发现揭示了类生物合成和基因功能的新见解.
科学领域:
- 自然产品化学 自然产品化学
- 植物生物化学 植物生物化学
- 分子生物学分子生物学
背景情况:
- 氨酸是一个具有历史意义的类化合物,其甲氧基组的生物合成起源以前被认为是后期添加的.
- 复杂的天然产品如因的生物合成往往涉及到复杂的酶途径,这些途径尚未完全阐明.
研究的目的:
- 调查因和相关类生物合成中甲氧基组的整合的精确阶段和机制.
- 为了确定负责因途径中甲氧化酶的特定基因和酶.
- 重建化物生物合成途径的早期步骤并了解基质利用.
主要方法:
- 在植物养研究中,使用标记的基板来追踪代谢途径.
- 识别和描述编码氧化酶和甲基转移酶酶的关键生物合成基因.
- 在异质植物系统 (Nicotiana benthamiana) 中早期类生物合成步骤的重构.
主要成果:
- 证明甲基组被引入到起始基质,胺,而不是在晚期阶段.
- 通过养研究证实,5-甲西胺是氨酸生物合成的直接中间体.
- 发现并描述了在甲氧化过程中涉及的特定氧化酶和甲基转移酶基因.
- 在复制途径中成功生产了甲氧化和非甲氧化类中间体.
结论:
- 胺的甲氧化发生在氨酸生物合成途径的早期.
- 这些已识别的基因为理解和工程化物生产提供了至关重要的工具.
- 基质的可用性 (tryptamine和5-methoxytryptamine) 和酶混杂性解释了甲基化和非甲基化类的并行形成.
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