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MSU Graduate Theses

Theses/Dissertations

2017

Raman spectroscopy

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Study Of Iron Ion Transit Through Three-Fold Channel Of Ferritin Cage, Shah Alam Limon Aug 2017

Study Of Iron Ion Transit Through Three-Fold Channel Of Ferritin Cage, Shah Alam Limon

MSU Graduate Theses

Ferritin is an iron-storage globular protein with an ability to uptake, mineralize and release iron ions in a controllable manner. The globular hollow shell allows storage of mineralized iron, with several channels responsible for the transit of ions into the shell and out of it. Understanding of the detailed molecular functioning of ferritin is required for rational design of biomimetic conjugate nano-biosystems containing ferritin-like constituents. In this work, ferritin was investigated both numerically by all-atom molecular dynamics (MD) simulations, and experimentally by Raman spectroscopy. Molecular dynamic simulations of a model system comprising iron ions (Fe2+) and a ferritin trimer expressing …


Application Of Raman Spectroscopy To Study Of Biological Systems, Neva Agarwala May 2017

Application Of Raman Spectroscopy To Study Of Biological Systems, Neva Agarwala

MSU Graduate Theses

Raman spectroscopy is an important tool of molecular characterization based on inelastic scattering of monochromatic light by molecules. Since Raman spectra reflect unique vibrational properties of materials, the method offers a potential of selective molecular identification. Furthermore, surface-enhanced Raman spectroscopy (SERS) also is capable of a high sensitivity, since inelastic scattering of light from the molecules is strongly enhanced when Raman-active molecules are located close to roughened noble metal surfaces. In this thesis, Raman characterization protocols of liquid biological samples are optimized. Raman spectra of two different cell cultures, yeast cells and HeLa cells, were collected and interpreted. The potentiality …