含有抑制植物细胞死亡的生效应蛋白质的npc-2-like域的识别和功能特征
Rajdeep Jaswal1,2, Himanshu Dubey3, Kanti Kiran3
1National Agri-Food Biotechnology Institute (NABI), Mohali, 140306, Punjab, India.
Molecular biology reports
|September 5, 2024
概括
这项研究确定了真菌中MD-2-相关的脂质识别 (ML) 域蛋白质,揭示了保存的脂质结合功能和这些蛋白质作为植物真菌病原体中的效应分子的新角色,影响宿主防御操纵.
科学领域:
- 分子生物学分子生物学
- 菌类学 菌类学是指菌类学.
- 植物病理学 植物病理学
背景情况:
- 与MD-2相关的脂质识别 (ML/Md-2) 域对于雌激素转移和真核生物的先天免疫是至关重要的.
- 一项全基因组调查确定了30种真菌物种的84个ML基因,包括植物病原体.
- 在Rhizophagus irregularis中发现了ML基因家族的扩张,已确定33个基因.
研究的目的:
- 在真菌中进行ML域蛋白的全基因组调查.
- 调查真菌ML蛋白的功能性保存和遗传关系.
- 描述来自Puccinia triticina的特定ML蛋白 (Pt5643) 在植物和真菌相互作用中的作用.
主要方法:
- 全基因组基因鉴定和遗传学分析.
- 用胆固醇衍生物进行分子对接研究.
- 基因表达分析 (qRT-PCR),细胞下定位 (聚焦显微镜) 和酵母中的功能补充.
- 编程细胞死亡测试在尼科蒂亚纳物种和酵母菌中.
主要成果:
- 在动物和真菌ML蛋白之间观察到脂质结合功能保存.
- 遗传学分析表明,Puccinia ML成员与昆虫npc2蛋白更为密切相关.
- 来自Puccinia triticina的Pt5643,局限于细胞质和细胞核,并功能补充了酵母npc2突变.
- 过度表达Pt5643抑制了BAX,NEP1和H2O2.2诱导的编程细胞死亡.
结论:
- 植物真菌病原体中的ML域蛋白具有新的功能.
- 这些蛋白质可能充当参与操纵宿主防御机制的效应分子.
- 该研究强调了ML蛋白作为了解和控制植物疾病的目标的潜力.
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