title: Self-assembled amyloid fibrils with controllable conformational heterogeneity.
abstract: Amyloid fibrils are a hallmark of neurodegenerative diseases and exhibit a conformational diversity that governs their pathological functions. Despite recent findings concerning the pathological role of their conformational diversity, the way in which the heterogeneous conformations of amyloid fibrils can be formed has remained elusive. Here, we show that microwave-assisted chemistry affects the self-assembly process of amyloid fibril formation, which results in their conformational heterogeneity. In particular, microwave-assisted chemistry allows for delicate control of the thermodynamics of the self-assembly process, which enabled us to tune the molecular structure of β-lactoglobulin amyloid fibrils. The heterogeneous conformations of amyloid fibrils, which can be tuned with microwave-assisted chemistry, are attributed to the microwave-driven thermal energy affecting the electrostatic interaction during the self-assembly process. Our study demonstrates how microwave-assisted chemistry can be used to gain insight into the origin of conformational heterogeneity of amyloid fibrils as well as the design principles showing how the molecular structures of amyloid fibrils can be controlled.
authors.affiliation: School of Public Health, Harvard University, Boston, MA 02115, USA.
authors.forename: Gyudo
authors.initials: G
authors.lastname: Lee
authors.affiliation: Department of Biomedical Engineering, Yonsei University, Wonju 26493, Republic of Korea.
authors.forename: Wonseok
authors.initials: W
authors.lastname: Lee
authors.affiliation: Department of Biomedical Engineering, Yonsei University, Wonju 26493, Republic of Korea.
authors.forename: Hyungbeen
authors.initials: H
authors.lastname: Lee
authors.affiliation: School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea.
authors.forename: Chang Young
authors.initials: CY
authors.lastname: Lee
authors.affiliation: Biomechanics Laboratory, College of Sport Science, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea.
authors.forename: Kilho
authors.initials: K
authors.lastname: Eom
authors.affiliation: SKKU Advanced Institute of Nano Technology, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea.
authors.forename: Taeyun
authors.initials: T
authors.lastname: Kwon
mesh_terms: D000682:Amyloid / Q000737:chemistry*; D006801:Humans; D007782:Lactoglobulins / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D008872:Microwaves; D008958:Models, Molecular; D066329:Protein Aggregates; D011487:Protein Conformation; D013816:Thermodynamics
chemical_list: D000682:Amyloid; D007782:Lactoglobulins; D066329:Protein Aggregates