伪菌素生物合成:解开了动物特种新陈代谢的几十年问题
Paul D Scesa1, Eric W Schmidt1
1Department of Medicinal Chemistry, University of Utah, 30 South 2000 East, Salt Lake City, Utah 84112, United States.
Journal of the American Chemical Society
|January 17, 2025
概括
科学家们已经发现了生产伪素的遗传路径, 这一突破使得这些有价值的天然产品的发酵生产成为可能.
科学领域:
- 海洋天然产品的生物合成
- 化学生态学
- 生物技术
背景情况:
- 软珊瑚是丰富的类物质来源,包括具有抗炎功能的伪素.
- 几十年来,伪类糖化物的一类生物合成途径基本上是未知的.
- 了解这种途径对于释放这些化合物的治疗潜力至关重要.
研究的目的:
- 阐明软珊瑚中的伪素的完整生物合成途径.
- 识别和描述涉及伪素合成的关键酶.
- 通过生物技术方法探索生产伪素的可行性.
主要方法:
- 利用前进的遗传方法来识别和克隆负责伪素生物合成的基因.
- 在*Saccharomyces cerevisiae* (面包酵母) 中表达了已识别的基因,用于功能性表征.
- 使用体内养研究来探测氧化级联的机制.
- 描述了新的多功能细胞P450酶.
主要成果:
- 鉴定和克隆了伪素生物合成的基本基因.
- 发现独特的多功能P450酶催化级联反应.
- 通过中间体elasabethatrienol及其表皮质,从elasabethatrien到伪素的7,8-dihydroxyerogorgiaene的途径被解.
- 证明单个酶可以产生几乎成熟的天然产品.
结论:
- 已明确了伪素的生物合成途径,解决了长期存在的科学问题.
- 已识别的基因和酶为合成生物学方法提供了基础.
- 发酵为可持续生产伪素和相关化合物提供了一个有前途的途径.
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