组氨酸
肽
纳米材料
化学
淀粉样蛋白(真菌学)
酶
生物物理学
生物化学
纳米技术
材料科学
生物
无机化学
作者
Yé Yuan,Lei Chen,Lingfei Kong,Lingling Qiu,Zhendong Fu,Minmin Sun,Lei Yuan,Ming Cheng,Saiyu Ma,Xiaonan Wang,Can Zhao,Jing Jiang,Xinzheng Zhang,Liping Wang,Lizeng Gao
标识
DOI:10.1038/s41467-023-41591-1
摘要
Amyloid-like assembly is not only associated with pathological events, but also leads to the development of novel nanomaterials with unique properties. Herein, using Fmoc diphenylalanine peptide (Fmoc-F-F) as a minimalistic model, we found that histidine can modulate the assembly behavior of Fmoc-F-F and induce enzyme-like catalysis. Specifically, the presence of histidine rearranges the β structure of Fmoc-F-F to assemble nanofilaments, resulting in the formation of active site to mimic peroxidase-like activity that catalyzes ROS generation. A similar catalytic property is also observed in Aβ assembled filaments, which is correlated with the spatial proximity between intermolecular histidine and F-F. Notably, the assembled Aβ filaments are able to induce cellular ROS elevation and damage neuron cells, providing an insight into the pathological relationship between Aβ aggregation and Alzheimer's disease. These findings highlight the potential of histidine as a modulator in amyloid-like assembly of peptide nanomaterials exerting enzyme-like catalysis.
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