表面丧重塑模式是真菌孤儿候选因子的结构景观和可变性的基础
Mark C Derbyshire1, Sylvain Raffaele2
1Centre for Crop and Disease Management, School of Molecular and Life Sciences, Curtin University, Perth, Australia.
Nature communications
|August 28, 2023
概括
效应剂通过改变表面残留物相互作用,进化出坚固的结构. 这使得病原体蛋白质能够在不同的宿主中保持功能,同时实现新的适应,解释了它们的进化成功.
科学领域:
- 分子生物学分子生物学
- 进化生物学是进化的生物学.
- 结构生物学是结构生物学.
背景情况:
- 病原体效应蛋白操纵宿主细胞的疾病.
- 效应者面临着进化压力,以逃避宿主免疫力,同时保持功能.
- 对于效应器的稳定性和可变性的机制不太了解.
研究的目的:
- 调查真菌效应物进化的结构基础.
- 在Pezizomycotina中确定保存的效应器家族.
- 阐明效应者如何平衡结构稳定性与适应性.
主要方法:
- 对真菌孤儿效应因子候选物的生物信息分析.
- 保存的效应体家族的结构分析.
- 在表面残留物中评估热力学挫折.
主要成果:
- 确定了62个保存的与结构相关的真菌效应因子家族.
- 通过影响表面热力学挫折的突变观察到多样化.
- 突变增强了蛋白质的强度,并改变了结合接口.
结论:
- 效应物通过表面热力学挫折的修改进化.
- 这种机制促进了结构强度和功能适应性.
- 为保存的效应器结构和新的效应器家族的演变提供了一个模型.
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