调节器 AreA 通过 uga2 在 Mucor circinelloides 中调节脂质代谢
Xiuwen Wang1, Hassan Mohamed2, Qing Liu1
1Colin Ratledge Center for Microbial Lipids, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, 255000, Shandong, China.
Fungal biology
|September 7, 2025
概括
在Mucor circinelloides中淘汰UGA2基因显著增加了脂质的产生. 将此与AreA调节器的修改相结合,进一步提高脂肪酸含量,揭示了代谢和脂质合成之间的联系.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 微生物学 微生物学
背景情况:
- 油性真菌 Mucor circinelloides 拥有 GATA 转录激活剂 AreA,对于调节代谢至关重要.
- AreA对脂质产生的影响是间接的,通过利用途径和随后的碳分布影响代谢流.
- 作为一种替代代谢途径的GABA分流,在限的情况下,在补充TCA循环中间体方面发挥着作用.
研究的目的:
- 为了研究UGA2基因在Mucor circinelloides脂质代谢中的GABA突变中的作用.
- 探索AreA调节器和UGA2基因在调节脂质和脂肪酸生产中的相互作用.
- 为了确定AreA是否通过调节UGA2.2来调节脂质代谢.
主要方法:
- 在野生类型,AreaA淘汰和AreaA过度表达的Mucor circinelloides背景中构建UGA2淘汰菌株.
- 在工程菌株中量化脂肪酸和脂质含量.
- 分析与脂肪酸合成相关的基因表达水平和酶活性.
主要成果:
- 乌加2单次淘汰赛使脂肪酸含量从24.5%增加到32.7%.
- 在A和uga2区域的双重淘汰中,脂肪酸含量最高的脂肪酸含量为36.1%.
- AreA过度表达与uga2淘汰赛相结合,导致32.4%的脂质积累,这表明碳流向脂质生成的转移.
结论:
- 删除uga2促进了Mucor circinelloides中的脂肪酸积累的增加.
- 似乎AreA通过调节uga2的表达或功能来调节脂质代谢.
- 针对UGA2基因,与操纵AreA结合,为增强油性真菌中的脂质生产提供了一个可行的策略.
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