Abstract
The increasing knowledge about natural functional fibrils has triggered the interest in synthetic or engineered fibrils. Naturally occurring amyloid fibrils (functional and pathogenic) have been analyzed for many years at different structural levels. Engineered fibrils are structurally similar to natural fibrils and the main sub-structural feature of amyloids is characterized by cross-beta structure stabilizing the fibril formation. However, a number of peculiarities exist comparing natural and engineered fibrils that may affect their analysis, especially in spectroscopic and scattering methods. For this reason, several methods that are commonly used for natural fibril analysis are presented and particularities for their application in the characterization of engineered fibrils are described. In addition, the understanding about structure–function relation of fibrils studied in the different research areas may mutually improve when using the same analytical approaches for natural and engineered fibrils.
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Abbreviations
- AFM:
-
Atomic force microscopy
- ATR:
-
Attenuated total reflection
- COSMiCS:
-
Complex objective structural analysis of multi component system
- CW EPR:
-
Continuous wave EPR
- DEER:
-
Double electron–electron resonance
- DLS:
-
Dynamic light scattering
- EPR:
-
Electron paramagnetic resonance
- FTIR:
-
Fourier-transform infrared
- SAXS:
-
Small angle X-ray scattering
- SANS:
-
Small angle neutron scattering
- SEM:
-
Scanning electron microscopy
- SDSL:
-
Site directed spin labelling
- ssNMR:
-
Solid state nuclear magnetic resonance
- TEM:
-
Transmission electron microscopy
- Thio-T:
-
Thioflavin-T
- WAXS:
-
Wide angle X-ray scattering
- Rg:
-
Radius of gyration
- α-B-Cry:
-
α-B-crystallin
- BLG:
-
Whey protein beta-lactoglobulin
- BSA:
-
Bovine serum albumin
- EGCG:
-
Epigallocatechin gallate
- IPSL:
-
N-(1-oxyl-2,2,5,5-tetramethyl-3-pyrrolidinyl) iodoacetamide
- MTSSL:
-
(1-Oxyl-2,2,5,5-tetramethylpyrroline-3-methyl) methanethiosulfonate
- PGG:
-
Pentagalloyl glucose
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Acknowledgements
TRH, ASH, KS and JKK would like to thank the German Research Foundation (DFG), project number 315456892, within the priority program SPP1934.
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Heyn, T.R., Garamus, V.M., Steffen-Heins, A., Schwarz, K., Keppler, J.K. (2022). Analysis of Natural and Engineered Amyloid Aggregates by Spectroscopic and Scattering Techniques. In: Bulavin, L., Lebovka, N. (eds) Soft Matter Systems for Biomedical Applications. Springer Proceedings in Physics, vol 266. Springer, Cham. https://doi.org/10.1007/978-3-030-80924-9_11
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