发现一种真菌HR-PKS集群,对具有两种不同的环形大小的宏类生物合成途径进行编码
Yi Li1, Yohei Morishita1, Akihiro Sugawara1
1Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan.
Chemical & pharmaceutical bulletin
|January 12, 2026
概括
研究人员表达了来自Aspergillus petrakii的基因,以发现新的宏类物质. 这项工作揭示了一种多功能酶途径,产生具有不同环形大小和支架的宏类.
科学领域:
- * * 自然产品化学
- * 分子生物学 * 分子生物学
- * 代谢工程是指代谢工程.
背景情况:
- * 聚乙合成酶 (PKS) 对于产生各种二次代谢产物至关重要.
- * 在 * Aspergillus petrakii * 中的 apeml 基因集群被研究其在宏类生物合成中的潜力.
- * 了解宏化物生物合成途径可以导致发现新的生物活性化合物.
研究的目的:
- * 探索来自Aspergillus petrakii的apeml集群的生物合成潜力.
- * 为了异质地表达用于化物生产的关键酶.
- * 为了研究产生具有不同结构的宏类的酶乱交性.
主要方法:
- *来自 *apeml* 集群的多基酸合成酶和铁酶的异质表达.
- *使用*Aspergillus oryzae*转换剂与个别修饰酶进行养实验.
- * 用光谱方法分离和阐明产生的宏类的结构.
主要成果:
- * 分离了一种新型的10个分子化物 (1) 和已知的12个分子化物 (2) recifeiolide (2).
- *通过修饰酶表达来识别阿斯皮诺利德A (3),佩特拉基利德A (4) 和佩特拉基利德B (5).
- * 证明酶级联能够产生具有不同的支架和环形大小的宏类.
结论:
- * 类动物集群含有能够产生结构多样化的宏类生物的基因.
- * 异质表达和酶工程是发现新天然产品的有效策略.
- *已识别的酶级联表现出乱交性,使得各种各样的类基架的生成成为可能.
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