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    • Graduate School - MU Theses and Dissertations (MU)
    • Theses and Dissertations (MU)
    • Theses (MU)
    • 2008 Theses (MU)
    • 2008 MU theses - Freely available online
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    Spectroscopic investigations of the beta-amyloid peptide

    Schmidt, Emily Ann
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    [PDF] short.pdf (49.04Kb)
    [PDF] research.pdf (1.395Mb)
    Date
    2008
    Format
    Thesis
    Metadata
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    Abstract
    The focus of this project is two-fold: examining the native structures of three different fragments of the beta-amyloid (A[beta]) peptide, and attempting to overcome some of the difficulties encountered in such an examination. The first part uses two different spectroscopic methods to compare the native structures of the hydrophilic [alpha beta] (1-16) fragment, the hydrophobic A[beta] (25-40) fragment, and the longer A[beta] (1-40) fragment. The second part focuses on replacing the counter-ion used in peptide purifications, including the purification of the A[beta] peptide, with a counter-ion that is less likely to alter the secondary structure and will not interfere with vibration-based spectroscopic studies. The third part highlights an attempt to improve upon current methods of peptide concentration estimation. Many experimental measurements require an accurate estimate of peptide concentration, which can prove to be particularly problematic for peptides such as A[beta] that are not easily soluble in aqueous solvents.
    URI
    https://hdl.handle.net/10355/5668
    https://doi.org/10.32469/10355/5668
    Degree
    M.S.
    Thesis Department
    Chemistry (MU)
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    • 2008 MU theses - Freely available online
    • Chemistry electronic theses and dissertations (MU)

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