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基于完全芳香的自组装材料:,氨酸和多巴残留物的影响

Nicole Balasco¹, Davide Altamura², Pasqualina Liana Scognamiglio³

¹Institute of Molecular Biology and Pathology, CNR, Piazzale Aldo Moro 5, Rome 00185, Italy.

Langmuir : the ACS journal of surfaces and colloids

|January 4, 2024

概括

新型类类似物与托芬和多巴残留物自组装成交叉β结构. PEGylation和氨基酸替代作用于它们的超分子组织和凝性质.

科学领域:

生物材料科学生物材料科学
超分子化学超分子化学
体自组装器自组装器

背景情况:

可以自组织成像跨β的结构,这对于创建超分子架构很有用.
芳香,如 (FY) 3序列,通过极性和非极性相互作用自我组装.
在序列中修改氨基酸,比如用非编码的取代氨酸 (Phe) 和氨酸 (Tyr),改变了自我组装和超分子组织.

研究的目的:

为了研究两个新的 (FY) 3类型的自我组装行为.
探索 (Trp) 和多巴残留物对自组合的影响.
评估N终端PEGylation对这些新系统的特性的影响.

主要方法:

利用光,里叶变换红外光谱 (FTIR) 和扫描电子显微镜 (SEM) 来评估超分子组织,形态和凝.
采用放牧发生率广角X射线散射 (GWAXS) 来检测沿线和垂直于纤维轴的结构周期.
进行了分子动力学 (MD) 研究,以深入了解跨β图案的原子结构.

主要成果:

与原始 (FY) 3相比,包含Trp和Dopa的新类型呈现出明显的自我组装行为.
N端的PEGylation影响了组件的形态和凝能力.
GWAXS分析揭示了特定的结构周期性,证实了有序的超分子结构的形成.
MD模拟提供了对跨β结构的详细原子层次理解.

结论:

研究的类体通过氨基酸替代和PEGylation表现出可调节的自我组装特性.
这些发现扩大了对先进的超分子材料的基构建块的作品集.
这项研究为材料科学中的潜在应用提供了关于体自我组织的基本原则的见解.

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