This protocol describes a method to purify SOD1 in Saccharomyces cerevisiae to characterize using ICP-MS and AFM, to agitate and fibrillate for aggregation of SOD1. The human SOD1 (hSOD1) is a 32-kDa homodimer, with one copper- and one zinc-binding site per 153-amino acid subunit. Misfolded protein aggregates are often correlated with diseases known as amyloidosis, including ALS, Alzheimer’s, Parkinson’s, and prion disease (Valentine and Hart, Proc Natl Acad Sci USA 100: 3617–3622, 2003; Tanzi and Bertram, Cell 120: 545–555, 2005; Soto and Pritzkow, Nat Neurosci 21:1332–1340, 2018; Sarafian et al., J Neurosci Res 95:1871–1887, 2017). Proteinaceous aggregates containing hSOD1 have frequently been found in the spinal cords of ALS patients.
CITATION STYLE
Koo, B. K., & Whitelegge, J. (2023). Structural Analysis of SOD1 Fibrils with Mass Spectrometry, Limited Proteolysis, and Atomic Force Microscopy (AFM). In Methods in Molecular Biology (Vol. 2551, pp. 481–495). Humana Press Inc. https://doi.org/10.1007/978-1-0716-2597-2_30
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