在热反应性内在无序的蛋白质中通过高温化时间调节层次的自我组装
Vaishali Sethi1,2,3, Dana Cohen-Gerassi2,3,4, Sagi Meir1,2,3
1School of Physics and Astronomy, Tel Aviv University, 6997801, Tel Aviv, Israel.
Scientific reports
|December 8, 2023
概括
高温化时间控制了内在失序蛋白 (IDP) 的自我组装. 扩展化导致依赖序列的微观结构和纳米尺度的秩序,提供了一种调节IDP层次组合的方法.
科学领域:
- 生物物理学的生物物理.
- 结构生物学 结构生物学
- 材料科学 材料科学 材料科学
背景情况:
- 内在无序蛋白质 (IDPs) 挑战了传统的结构-功能范式.
- IDPs可以经历大规模的组织,如液态-液态相分离.
- 它们的结构可塑性允许在热平衡之外的各种自组装结构.
研究的目的:
- 为了研究高温化时间在树脂素类IDP的自我组装中的作用.
- 为了确定化时间是否影响微和纳米结构的形成.
- 探索氨基酸序列和自我组装结果之间的关系.
主要方法:
- 在高温下在不同时间内化类似于树脂素的IDP.
- 高分辨率扫描电子显微镜 (HR-SEM) 用于结构分析.
- 对氨基酸序列对自我组装的依赖性的分析.
主要成果:
- 高温化时间是IDP自组装的关键参数.
- 延长的化过程促进了依赖序列的微米大小的杆子和圆体的形成.
- 长时间的化会诱导氨基酸成分依赖的纳米级秩序,包括周期性层状纳米结构.
结论:
- 调节高温化时间提供了一种新的方法来控制IDP中的等级自组装.
- 这种方法允许有针对性的微和纳米结构的形成.
- 研究结果提供了有关无序蛋白质的动态行为和组装机制的见解.
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