一种独特的蛋白质后翻译修饰链接的OsATL32-OsPPKL2-OsGSK2循环调节了对爆发性疾病的米免疫力
Yuqing Yan1,2,3, Hui Wang1,2,3, Yan Bi1,2,3
1National Key Laboratory for Rice Biology and Breeding, Institute of Biotechnology, Zhejiang University, Hangzhou, 310058, China.
The New phytologist
|July 26, 2024
概括
米的免疫包括蛋白质的修改. OsATL32 E3结合酶与OsPPKL2酸酶和OsGSK2激酶相互作用,形成一个循环,调节植物防御信号和氨酸菌路径.
科学领域:
- 植物生物学 植物生物学
- 分子植物病理学 分子植物病理学
- 生物化学 生物化学
背景情况:
- 蛋白质的翻译后修改对于植物免疫力至关重要.
- 之前已经证明,E3结合酶OsATL32对大米对Magnaporthe oryzae.e.的免疫有负面影响.
研究的目的:
- 阐明OsATL32调节大米免疫力的分子机制.
- 研究植物防御信号中的OsATL32,OsPPKL2和OsGSK2之间的相互作用.
主要方法:
- 研究的蛋白质-蛋白质相互作用和翻译后修改.
- 利用无处不在测试来确定OsATL32的目标.
- 分析了由OsGSK2和OsPPKL2.2介导的酸化和脱酸化事件.
- 研究了这些蛋白质在布拉西诺固醇信号传递中的作用.
主要成果:
- OsATL32 无处不在地化 OsPPKL2,促进其降解.
- OsGSK2可酸化OsATL32,增强其稳定性和活性.
- OsPPKL2去酸化OsGSK2,影响其酶活性.
- OsATL32和OsGSK2负面调节布拉西诺固醇信号,而OsPPKL2则积极调节.
结论:
- OsATL32 作为一个关键的节点,连接布拉西诺固醇信号和植物免疫.
- 涉及OsATL32,OsPPKL2和OsGSK2的独特蛋白质后翻译修饰链路调节了大米免疫力.
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