蛋白质质量控制系统管理植物防护化合物合成
Jacob Pollier1, Tessa Moses, Miguel González-Guzmán
11] Department of Plant Systems Biology, VIB, Technologiepark 927, Gent B-9052, Belgium [2] Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 927, Gent B-9052, Belgium [3].
Nature
|November 12, 2013
概括
植物激素叫做贾斯莫纳特使用ERAD系统通过调节HMGR酶活性来控制三二桑的产生,确保植物的防御和发育.
科学领域:
- 植物生物学 植物生物学
- 生物化学 生物化学
- 分子生物学分子生物学
背景情况:
- 斯蒙酸盐是关键的植物激素,调节发展和防御.
- 它们引起生物活性二次代谢产物的产生,如三二烯沙素.
- 控制防御代谢的下游机制在很大程度上是未知的.
研究的目的:
- 为了研究在Medicago truncatula. jasmonate信号的下游机制.
- 为了阐明斯蒙酸盐是如何调节三二酸盐的生物合成的.
- 了解ERAD系统在管理香素生产中的作用.
主要方法:
- 在Medicago truncatula中研究了斯蒙酸盐与ERAD系统之间的相互作用.
- 分析了ERAD型E3泛素酶与沙宁合成酶的联合表达.
- 研究了ERAD系统对HMGR活动的调节.
主要成果:
- 雅斯莫纳特使用ERAD质量控制系统来管理三二番的生产.
- 一种ERAD类型的E3泛素酶控制HMGR的活性,即原前体供应中的速度限制酶.
- 这种规则可以防止过度的氨酸积累,确保植物的发育和完整性.
结论:
- 在真核生物体中,ERAD系统在管理醇和三二番氨酸生物合成方面发挥着保留作用.
- 在植物和其他真核生物中,用于HMGR调节的独特的E3无素连接酶 (ERAD类型与HRD1类型).
- 不同的监管线索控制着保存的生物合成管理原则.
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