通过1,4-迈克尔在Penicillium crustosum中形成烯和烯酸 添加来自Hydroxyclavatol的ortho-Quinone Methide到来自Crustosic Acid的γ-Butyrolactones
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在PubMed上查看摘要
概括
此摘要是机器生成的。皮通过不同的基因集群产生A和B型皮. 关键酶如非还原性多基合成酶 ClaF 和细胞染色体P450 ClaJ 对于分别合成克拉瓦托和γ-丁烯酸至关重要.
科学领域
- 自然产品生物合成
- 菌群学
- 酵素学
背景情况
- 青素A和B是复杂的分子,其中包括γ-丁素和clavatol单位.
- 了解它们的生物合成是新化合物发现的关键.
研究的目的
- 为了阐明Penicillium crustosum中青素A和B生物合成的遗传和生化途径.
- 确定生产关键中间体的特定酶和反应.
主要方法
- 在Penicillium crustosum中进行基因集群识别和删除实验.
- 用前体分子进行养研究.
- 生物化学测试以表征酶活动.
主要成果
- 确定了两个负责关键构建块的不同基因集群.
- 非还原聚酸合成酶 ClaF 产生克拉瓦托.
- PKS-NRPS杂交的 TraA 合成皮质酸,从而产生陆地酸.
- 细胞染色体P450 ClaJ可以将酸转化为γ-丁.
- 克拉迪氧化了克拉瓦托,开始了非酶的迈克尔添加物,形成了阴茎动素.
结论
- 已经提出了涉及酶和非酶步骤的A和B素的详细生物合成途径.
- 在这些复杂的真菌代谢物组合中,特定的酶如 ClaF,TraA,ClaJ 和 ClaD 起着至关重要的作用.
相关概念视频
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α,β-Unsaturated carbonyl compounds with two electrophilic sites, the carbonyl carbon, and the β carbon, are susceptible to nucleophilic attack via two modes: conjugate or 1,4-addition and direct or 1,2-addition.
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Direct addition products are...
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