一种循环二-GMP结合适应蛋白与N5-胺甲基转移酶相互作用,以调节Xanthomonas citri亚种的病变发生. 在这里,CitriCitri就是一个城市
Yu Shi1,2, Tianfang Cheng1, Qing Wei Cheang3
1Integrative Microbiology Research Centre, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, China.
Molecular plant pathology
|July 16, 2024
概括
周期性迪加尼酸单酸盐 (c-di-GMP) 调节细菌的行为. 一种新型蛋白质N5MapZ与HemK相互作用,以控制Xanthomonas citri中的毒性,与增加c-di-GMP水平独特地降低了相互作用强度.
科学领域:
- 细菌学 细菌学是一门学科.
- 分子生物学分子生物学
- 植物病理学 植物病理学
背景情况:
- 循环双酸单酸盐 (c-di-GMP) 是一个关键的第二信使,调节各种细菌行为.
- 单域PilZ蛋白质是广泛存在的c-di-GMP受体,它们介导特定的信号通路.
- 了解c-di-GMP调节对于控制像Xanthomonas citri亚种这样的细菌病原体至关重要. 树 (Xcc). 树 (Xcc) 是一种
研究的目的:
- 为了识别和表征一种新型的单域PilZ蛋白涉及到Xcc毒性.
- 阐明已识别的PilZ蛋白及其合作伙伴HemK之间的相互作用机制.
- 揭示这种相互作用在c-di-GMP介导的Xcc病变的调节中的作用.
主要方法:
- 酵母两个混合测定蛋白质-蛋白质相互作用.
- 同免疫沉以确认体内相互作用.
- 免疫光染色用于蛋白质定位.
- 位点定向突变发生,以评估c-di-GMP结合效应.
- 用于病毒性评估的HemK删除突变分析.
主要成果:
- 在Xcc中发现了一种新的单域PilZ蛋白,N5MapZ,与甲基转移酶HemK相互作用.
- 与其他PilZ蛋白不同,N5MapZ与HemK的相互作用在较高的c-di-GMP度下降.
- 即使在c-di-GMP结合缺陷突变体中,N5MapZ也抑制了PrfA的HemK介导甲基化.
- HemK 缺失显著降低了 Xcc 毒性,运动性,细胞外酶生成和应激耐受性.
- c-di-GMP和HemK通路调节Xcc中的病毒效应蛋白表达.
结论:
- N5MapZ作为一个独特的c-di-GMP传感器,通过HemK介导的PrfA甲基化调节Xcc毒性.
- 这项研究揭示了一种新的c-di-GMP调节途径,涉及单域PilZ适应蛋白.
- 这些发现为细菌病原体和控制Xcc.的潜在目标提供了新的见解.
关键词:
他的KKK这就是为什么PrfAA.桑托蒙纳斯 (Xanthomonas citri) 下属物种. 在这里,CitriCitri就是一个城市.循环 di-GMP 的情况.一种类型的表酶.运动性 运动性 运动性压力耐受性 耐压力耐受性毒性 毒性是一种毒性.更多相关视频
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