重构Monascus阿扎菲龙颜料生物合成的非减小聚胺合成酶,以与高度减小的聚胺合成酶合作
Dan Zhang1, Yao Xu1, Jiajie Ma1
1School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, P. R. China.
Journal of natural products
|March 9, 2026
概括
聚基合成酶 (PKS) 的起始转移酶 (SAT) 域的工程使不同类型的PKS之间实现了新的合作. 这项研究表明,SAT域修改可以创建新的生物活性多基类.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 合成生物学 合成生物学
背景情况:
- 二醇乳 (BDL) 和Monascus azaphilone颜料 (MonAzP) 是通过不同的途径合成的不同的生物活性聚化物.
- BDL合成涉及高降解PKS (hrPKS) 和非降解PKS (nrPKS) 之间的伙伴关系,其中nrPKS的起始转移酶 (SAT) 域使用hrPKS的起始单元.
- MonAzP合成使用一个nrPKS,其SAT域与乙-CoA为素数,而不涉及hrPKS.
研究的目的:
- 通过改变其SAT域,重新配置一个MonAzP nrPKS以参与双PKS系统.
- 为了研究SAT域交换对多基基产物形成的影响.
- 探索SAT域工程的潜力,以创建非认知的PKS协作和新的多基基类.
主要方法:
- 通过将其起始乙转移酶 (SAT) 域替换为来自二醇乳 (BDL) 的域,重新配置Monascus azaphilone 颜料 (MonAzP) 非还原性多基合成酶 (nrPKS). nrPKS.
- 创建一个模拟的双PKS系统来评估改变的基质招募和产品频谱.
- 分析工程PKS系统产生的聚基化物产品.
主要成果:
- 嵌合式PKS系统,在MonAzP nrPKS支架内设有一个BDL nrPKS SAT域,成功地转移了产品形成.
- 该工程系统产生了新的α-pyrones,而不是与MonAzP途径相关的本地甲.
- 该研究证实,SAT域工程可以促进非熟悉的hrPKS和nrPKS合作伙伴之间的相互作用.
结论:
- 启动转移酶 (SAT) 域工程是一种可行的策略,可以强制不同类型的多基合成酶 (PKS) 之间进行协作,包括单独的nrPKSs.
- 在使新产品形成的同时,工程过程揭示了本地循环和产品发布的挑战,突出了域兼容性的重要性.
- 这项工作提供了对工程PKS路径的洞察力,用于生产非自然的多基化物.
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