雅罗维亚脂质菌的PAH1编码的酸盐酸酶对基因表达和脂质生物合成有不同的影响
Taylor Carmon1, Na'Taja Hill1, Venkateswara R Sripathi1
1Department of Food and Animal Sciences, Alabama A&M University, Normal, AL 35762, USA.
概括
在Yarrowia lipolytica中失去Pah1酶显著改变了脂质代谢,降低了三糖醇和二糖醇,但影响了基于葡萄糖可用性的脂水平. 这项研究揭示了Pah1
科学领域:
- * 微生物学和分子生物学
- * 代谢工程 代谢工程
- * 酵母遗传学公司
背景情况:
- *Yarrowia lipolytica是脂质积累研究的关键油性酵母模型.
- * Y. lipolytica 脂质代谢的调节机制尚未完全理解.
- *已知Pah1,一种酸盐酸酶,会影响脂质生物合成和基因转录.
研究的目的:
- * 为了研究Y. lipolytica中Pah1删除 (pah1Δ) 的代谢后果.
- * 为了阐明 pah1Δ 在不同的葡萄糖条件下对脂质和中央碳代谢的全球影响.
- *确定Pah1在脂质生物合成和基因表达中的新型调节作用.
主要方法:
- * 采用了包括脂管组学在内的多组学分析.
- * 在低葡萄糖和高葡萄糖条件下比较pah1Δ突变菌株与野生类型.
- *分析了与中央碳和脂质代谢相关的基因表达模式.
主要成果:
- * pah1Δ突变大大降低了三糖醇 (TAG) 和二糖醇 (DAG) 的水平,不论葡萄糖度如何.
- * 脂水平在低葡萄糖介质下降,在高葡萄糖介质上增加.
- *在糖解,酸循环,氧化酸化和酸路径中观察到基因表达的显著变化,特别是在高葡萄糖条件下.
结论:
- * Pah1在Y. lipolytica中调节TAG和DAG生物合成方面发挥着至关重要的作用.
- * Pah1以葡萄糖依赖的方式影响脂代谢.
- *这项研究揭示了Pah1在酵母脂质和碳代谢中的调节功能的新见解.
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