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Full-Text Articles in Other Biochemistry, Biophysics, and Structural Biology
Electron Transport To Photosystem I By Soluble Carriers: Evolution Of The Interacting Pair, Khoa Dang Nguyen
Electron Transport To Photosystem I By Soluble Carriers: Evolution Of The Interacting Pair, Khoa Dang Nguyen
Doctoral Dissertations
Oxygenic photosynthesis is driven via sequential action of Photosystem II (PSII) and (PSI) reaction centers via the Z-‐scheme. Both of these pigment– membrane protein complexes are found in cyanobacteria, algae, and plants. PSI, unlike PSII, is remarkably stable and does not undergo limiting photo-‐damage. This stability, as well as other fundamental structural differences, makes PSI the most attractive reaction centers for applied photosynthetic applications. These applied applications exploit the efficient light harvesting and high quantum yield of PSI where the isolated PSI particles are redeployed providing electrons directly as a photocurrent or, via a coupled catalyst to yield H2. Here, …
Complex Non-Equilibrium Structural Dynamics In Globular Proteins, Xiaohu Hu
Complex Non-Equilibrium Structural Dynamics In Globular Proteins, Xiaohu Hu
Doctoral Dissertations
Internal structural motions in proteins are essential to their functions. In this present dissertation, we present the results from an extensive set of molecular dynamics simulations of three very different globular proteins and demonstrate that the structural fluctuations observed are highly complex, manifesting in non-ergodic and self-similar subdiffusive dynamics with non-exponential relaxation behavior. The characteristic time of the motion observed at a given timescale is dependent on the length of the observation time, indicating an aging effect. By comparing the simulation results to the existing single-molecule fluorescence spectroscopic data on other globular proteins, we found the characteristic relaxation time for …